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51. In-situ analysis of microstructural evolution of papers under humidity by synchrotron X-ray microtomography

Author

Bloch, Jean-Francis, Dumont, Pierre J.J., Geindreau, Christian, Peralba, Magalie, Rolland Du Roscoat, Sabine, Jeuch, Marie-Lise, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

52. Quelques aspects du comportement hygromécanique du papier

Author

Jean-Francis Bloch, Laurent Orgéas, Nicolas Bouquet, Sabine Rolland du Roscoat, Pierre J.J. Dumont, Christian Geindreau, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
010302 applied physics, Softwood, Materials science, Moisture, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, Mechanical Engineering, 02 engineering and technology, Mechanical resistance, 021001 nanoscience & nanotechnology, Microstructure, 01 natural sciences, Industrial and Manufacturing Engineering, Synchrotron microtomography, 0103 physical sciences, Hardwood, General Materials Science, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, Deformation (engineering), Composite material, 0210 nano-technology, Porosity
Abstract

Some aspects of the hygromechanical behaviour of paper. Paper is mainly made up of cellulosic fibrous materials. On one hand, the nature of the fibres (softwood or hardwood) and on the other hand, their mechanical treatments severely affect the obtained porous structure. The porosity can vary from 1% to 95% according to the aimed end-use properties. Consequently, the mechanical behaviour strongly varies. Indeed, the mechanical resistance is related on the quality of fibres and the bonds between these fibres. Moreover, the mechanical behaviour of the final products is influenced by both the orientation of fibres and moisture. Consequently, it is important to better understand the moisture-induced changes of dimensions and mechanical properties of papers. Experiments were undertaken to this end. Moreover, in order to observe the fibrous microstructure of paper, experiments based on synchrotron microtomography were carried out with the help of the "European Synchrotron Radiation Facility" (ESRF).

Published
2008

53. Modelling batch non-isothermal digester during kraft cooking

Author

Jain, Sandeep, Mortha, Gérard, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

54. Kinetics of delignification of softwoods and hardwoods pure and in mixture

Author

da Silva Perez, Denilson, Margarido, Marta, Mortha, Gérard, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

55. Luffa Cylindrica: new lignocellulosic source of fiber, microfibrillated cellulose and cellulose nanocrystals

Author

Bras, Julien, Dufresne, Alain, Mortha, Gérard, Siqueira, Gilberto, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

56. Sodium hydroxide diffusivity in thin wood chips interpreted by a capillary pore model: a study on twelve softwood and hardwood species

Author

Mortha, Gérard, da Silva Perez, Denilson, Margarido, Marta, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

57. Evaluation of chemical and mechanical pulp oxidability by the kappa number test

Author

Behrooz-Eshkiki, Rabi, Lachenal, Dominique, Mortha, Gérard, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

58. Experimental study of segregation phenomena during compression of glass mat thermoplastics (GMT)

Author

Dumont, Pierre J.J., Favier, D., Michaud, V., Orgéas, Laurent, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Technologie des Composites et Polymères (LTC ), Ecole Polytechnique Fédérale de Lausanne (EPFL), and Leclerc, Sylvie

Subjects
GMT, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, Polymer-matrix composites, compression moulding, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, segregation, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

59. Hydrodynamics of ink transfer and ink tack on porous substrates

Author

Bloch, Jean-Francis, Daneault, Claude, Drolet, F., Dubé, Martin, Mangin, Patrice, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

60. Dimensional stability of a printing paper under cyclic hygroscopic conditions

Author

Bloch, Jean-Francis, Dumont, Pierre J.J., Geindreau, Christian, Orgéas, Laurent, Bouquet, N., Guelin, P., Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

61. Thermal conductivity of paper relationship with its microstructure

Author

Bloch, Jean-Francis, Decain, Maxime, Geindreau, Christian, Rolland Du Roscoat, Sabine, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

62. Inkjet printing of conductive patterns using multi-walled carbon nanotubes and Pedot: PSS suspension

Author

Blayo, Anne, Bras, Julien, Denneulin, Aurore, Neuman, C., Dhar, A., Bonnassieux, Y., Cojucaru--Sorin, C., Pribat, D., Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des interfaces et des couches minces [Palaiseau] (LPICM), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

63. Increasing chlorine dioxide reaction selectivity toward non-oxidized lignin in flow-through reactor delignification

Author

Hamzeh, Yahya, Lachenal, Dominique, Mortha, Gérard, Isadyar, S., Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

64. Conduction in composites with highly conductive short fibres: comparison between experiments, discrete element simulation and analytical solution

Author

Dumont, Pierre J.J., Favier, D., Michaud, V., Orgéas, Laurent, Vassal, J.P., Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Technologie des Composites et Polymères (LTC ), Ecole Polytechnique Fédérale de Lausanne (EPFL), and Leclerc, Sylvie

Subjects
transport properties, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, fibrous materials, analytical model, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, conductive polymer composite, discrete element model, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

65. Modified ECF bleaching sequences for South African hardwood kraft pulps

Author

Chirat, Christine, Mortha, Gérard, Andrew, Jerome, Grzeskowiak, Valerie, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

66. Effect of ozone bleaching on chemical, physico-chemical and physical properties of eucalyptus kraft pulp

Author

Chirat, Christine, Lachenal, Dominique, Passas, Raphaël, Mishra, Shree-Prakash, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

67. Models and experiments of mechanical integrity for flexible displays

Author

Andersons, J., Dumont, Pierre J.J., Leterrier, Y., Manson, J.A.E., Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

68. New ways of modifying cellulosic fibers to obtain innovative composites

Author

Bras, Julien, Pascoal Neto, Carlos, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

69. Modelling in the paper industry

Author

Bloch, Jean-Francis, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

70. Co-continuous approach: a new way of cellulose fiber surface modification to improve cellulose based composites properties

Author

Belgacem, Mohamed Naceur, Krouit, Mohamed, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

71. Multiscale nanoparticles from sisal and compatibilization techniques to reinforce polycaprolactone

Author

Bras, Julien, Dufresne, Alain, Siqueira, Gilberto, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

72. Bionanocomposites based on polycaprolactone-grafted cellulose nanocrystals

Author

Dufresne, Alain, Habibi, Youssef, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

73. Modelling the flow of non-newtonian fluids through deformed textile reinforcements

Author

Bloch, Jean-Francis, Geindreau, Christian, Orgéas, Laurent, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

74. Cellulose nano-cristals based reinforcements

Author

Belgacem, Mohamed Naceur, Bessadok, Atef, Bras, Julien, Krouit, Mohamed, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

75. Modification of cellulose nano-fibres and whiskers through surface treatment

Author

Belgacem, Mohamed Naceur, Bras, Julien, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

76. Désintégration et raffinage de la pâte à papier

Author

Jean-Claude Roux, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Abstract

Ce dossier est destine a presenter deux operations cles, situees en amont de la chaine de fabrication des papiers et cartons : la desintegration et le raffinage de la pâte a papier. Il vient completer le document [J 6 901]. La desintegration transforme la pâte a papier en une suspension fibreuse homogene dans l'eau alors que le raffinage opere des modifications physiques, chimiques et morphologiques des fibres par un traitement mecanique de cette suspension aqueuse. Ces deux operations sont fortement consommatrices d'energie.

Published
2008
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77. Determination of apparent sodium hydroxide diffusion coefficient in softwoods and hardwoods

Author

Benattar, Nicolas, da Silva Perez, Denilson, Margarido, Marta, Mortha, Gérard, Petit-Conil, Michel, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

78. Bionanocomposites from polycaprolactone reinforced with cellulose or starch nanocrystals

Author

Dufresne, Alain, Habibi, Youssef, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), A. JIMENEZ, G.E. ZAIKOV, and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

79. Selective degradation of lignin polymer by chlorine dioxide during chemical pulp delignification in flow through reactor

Author

Soheila Izadyar, Dominique Lachenal, Gérard Mortha, Yahya Hamzeh, Leclerc, Sylvie, Laboratoire Génie des procédés papetiers (LGP2 ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Polymers and Plastics, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, General Chemical Engineering, Materials Science (miscellaneous), Inorganic chemistry, Batch reactor, 02 engineering and technology, engineering.material, complex mixtures, chemistry.chemical_compound, Materials Chemistry, Chemical pulp, Lignin, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS, 040101 forestry, chemistry.chemical_classification, Chlorine dioxide, Pulp (paper), Chlorate, technology, industry, and agriculture, food and beverages, 04 agricultural and veterinary sciences, Polymer, 021001 nanoscience & nanotechnology, 6. Clean water, chemistry, Selective degradation, engineering, 0401 agriculture, forestry, and fisheries, 0210 nano-technology
Abstract

The delignification of pulp in a conventional batch reactor provides convenient conditions for inutile secondary reactions in which ClO2 reacts with oxidized aromatic units of lignin. In this study the flow-through reactor was applied to minimize secondary reactions. The obtained results showed that the removal of oxidized lignin from the reaction zone significantly enhanced the ClO2 reaction toward non-oxidized units of lignin. Application of an organic solvent-water solution, bleaching liquor, significantly increased the removal of oxidized lignin and decreased considerably the secondary reactions. Although this technique considerably improved ClO2 effective efficiency, large amounts of chlorate formation decreased the overall effect of improved ClO2 global efficiency.

Published
2008

80. Influence of surfactant concentration on the ink removal selectivity in a laboratory flotation column

Author

Davide Beneventi, P. Nortier, Jeremy Allix, Elisa Zeno, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
chemistry.chemical_classification, Chromatography, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, Chemistry, Bubble, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Geotechnical Engineering and Engineering Geology, 01 natural sciences, 0104 chemical sciences, Surface tension, Contact angle, Reaction rate constant, Chemical engineering, Pulmonary surfactant, Geochemistry and Petrology, Venturi effect, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, Aeration, 0210 nano-technology, Alkyl, ComputingMilieux_MISCELLANEOUS
Abstract

A laboratory flotation column equipped with Venturi aerators and an adjustable froth removal system was used to study the effect of an alkyl phenol ethoxylate surfactant on water, particle and surfactant transfer during flotation de-inking of recycled papers. Wash water was not used in order to emphasize the influence of surfactant concentration on water/particle transport in the froth. Surface tension, bubble size and contact angle measurements showed that the increase in surfactant concentration boosted pulp frothing, lowered bubble coalescence and ink/pulp contact angle, thus increasing water hold-up in the froth, gas hold-up in the aerated pulp and depressing ink floatability, respectively. Cross-linked phenomena determining the yield of the flotation process where interpreted using model equations describing particle removal in terms of flotation, entrainment and drainage in the froth. An exponential decrease in the flotation rate constant and in the drainage coefficient of ink, fillers, fine elements and in the fibre entrainment coefficient was observed when increasing the surfactant concentration. Whereas, the surfactant removal rate constant rose, in agreement with the increase in the surface area flux due to a reduction in bubble coalescence.

Published
2008

81. Cellulose whiskers reinforced polyvinyl alcohol copolymers nanocomposites

Author

Belgacem, Mohamed Naceur, Dufresne, Alain, Habibi, Youssef, Roohani, Mehdi, Ebrahim, G., Karimi, A.N., Leclerc, Sylvie, Laboratoire Génie des procédés papetiers (LGP2 ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

82. Effects of temperature gradients in batch kraft cooking of wood species mixtures

Author

Sandeep Jain, Gérard Mortha, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
Waste management, Chemistry, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, General Chemical Engineering, technology, industry, and agriculture, 02 engineering and technology, 010501 environmental sciences, 01 natural sciences, 020401 chemical engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, 0204 chemical engineering, Kraft paper, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences
Abstract

A batch kraft cooking non-isothermal digester was modelled based on chemical kinetics and mass transfer equations for softwood. Kraft pulping modelling had been designed for non-isothermal batch cooks of chip mixtures: either mixed-size chips, according to a thickness distribution law, or mixtures of different wood species. The case of existing linear or non-linear radial temperature gradients in a digester was examined. Several chip populations with different thickness distribution were used: normal (major abundance of 3-5 mm chips); uniform (equal abundance of chips in the range 3-12 mm); Gaussian-type (centred on 7 mm chips); Poisson-type (major abundance of 3 mm chips). The effect on cooking results due to temperature gradients in digester was predicted along with the existing non-uniformity arising from the effect of chip size distribution, density, and wood mixtures of different composition and chemical properties (rate constants, activation energies). Results are presented as a kappa number, yield and rejects distributions and mean values. The rather sharp kappa number distributions obtained for isothermal cooks were found to be severely spread in the linear temperature gradient case. The above effects were attenuated when a central core in the digester was kept isothermal. The stratification of chips resulted in significantly reduced width in kappa number distributions. Highest density chips cooked lower; however, since diffusion effects were more prominent in them, their apparent activation energy was also less. So they were slightly less affected by temperature gradients in the digester. Cooking different wood species together also affected the spread of the kappa number distribution. This cumulated more or less to temperature gradients effects, depending on chemical activation energy data and possible differences between species.

Published
2008

83. Optical metrology and scanning electron microscopy of paper damage by writing

Author

Passas, Raphaël, Vernhes, Pierre, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

84. Synchrotron X-ray microtomography: a new tool to characterize the interaction between the paper and the toner

Author

Blayo, Anne, Bloch, Jean-Francis, Pineaux, Bernard, Rolland Du Roscoat, Sabine, Vernhes, Pierre, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

85. Nanocomposites materials reinforced with surface modified cellulose whiskers

Author

Dufresne, Alain, Siqueira, Gilberto, De Menezes, Aparecido Junoir, Da Silva Curvelo, A.A., Leclerc, Sylvie, Laboratoire Génie des procédés papetiers (LGP2 ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

86. Lubricated compression of BMC, a concentrated and fibre-reinforced granular polymer suspension

Author

Pierre J.J. Dumont, Denis Favier, Laurent Orgéas, Thai-Hung Le, Leclerc, Sylvie, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Université Joseph Fourier - Grenoble 1 (UJF)-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, Rheometer, Thermosetting polymer, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Viscoelasticity, 0104 chemical sciences, Compressive strength, Rheology, Cylinder stress, General Materials Science, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, Lubricant, Composite material, 0210 nano-technology, Suspension (vehicle), ComputingMilieux_MISCELLANEOUS
Abstract

Bulk moulding compounds (BMCs) are thermoset polymer composites widely used in electric and automotive industries. During their processing by injection, BMCs look like fibre-reinforced granular suspensions in the form of pastes, the rheology of which is not well known. For that purpose, lubricated compression tests were performed on BMC samples with various formulations. Firstly, results show that samples flow without sticking to the rheometer’s plates, validating the efficiency of the lubricant. A correction, which requires few assumptions on the rheology of BMC, is then proposed to account for its contribution to the overall axial stress. Thereby, the influences of the axial strain rate, the loading path, the polydispersity of the mineral filler and the fibre content on the BMC flow are analysed. A 1D elementary non-linear viscoelastic model is proposed to capture the main observed trends.

Published
2008

87. Study of flocculation performance of sodium carboxy methylcellulose

Author

Belgacem, Mohamed Naceur, Khiari, Ramzi, Mauret, Evelyne, Mhenni, Mohamed Farouk, Leclerc, Sylvie, Laboratoire Génie des procédés papetiers (LGP2 ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

88. Kinetics of hydrolysis and self-condensation reaction of silanes by NMR spectroscopy

Author

Abdelmouleh, M., Mohamed Naceur Belgacem, Sami Boufi, Marie-Christine Brochier-Salon, Ariane BAYLE, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

89. New and improved models for all stages in full ECF bleaching sequences of softwoods and hardwoods

Author

Benattar, Nicolas, Calais, C., Jain, Sandeep, Mortha, Gérard, Leclerc, Sylvie, Laboratoire Génie des procédés papetiers (LGP2 ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

90. PEDOT-PSS coating on specialty papers: process optimisation and effect of surface properties on electrical performances

Author

Blayo, Anne, Bras, Julien, Denneulin, Aurore, Neuman, C., Leclerc, Sylvie, Laboratoire Génie des procédés papetiers (LGP2 ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

91. Cellulose surface grafting with polycaprolactone by heterogeneous click-chemistry

Author

Belgacem, Mohamed Naceur, Krouit, Mohamed, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

92. Influence of compression on paper topography

Author

Blayo, Anne, Bloch, Jean-Francis, Pineaux, Bernard, Vernhes, Pierre, Leclerc, Sylvie, Laboratoire Génie des procédés papetiers (LGP2 ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

93. Silicone liner-free pressure sensitive adhesive labels

Author

Empereur, J., Didier Chaussy, Belgacem, M. N., Leclerc, Sylvie, Laboratoire Génie des procédés papetiers (LGP2 ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

94. Predicting the compressive property of corrugated medium

Author

Chaussy, Didier, Desloges, Isabelle, Mauret, Evelyne, Serra-Tosio, Jean-Marie, Schott, Séverine, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

95. Preparation and characterization of lignocellulosic fibres/polyethylene composites

Author

Dufresne, Alain, Habibi, Youssef, El-Zawawy, W.K., Ibrahim, M.M., Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), A. JIMENEZ, G.E. ZAIKOV, and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

96. Bionanocomposites based on poly(e-caprolactone)-grafted cellulose nanocrystals by ring opening polymerization

Author

Dufresne, Alain, Habibi, Youssef, Goffin, Anne-Lise, Schiltz, N., Duquesne, E., Dubois, P., Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Center of innovation and research in materials and polymers (CIRMAP), Laboratory of polymeric and composite materials, and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

97. Nonionic surfactant contribution to particle/water transport phenomena in flotation deinking

Author

Allix, Jérémie, Beneventi, Davide, Nortier, Patrice, Zeno, Elisa, Leclerc, Sylvie, Laboratoire Génie des procédés papetiers (LGP2 ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

98. Processing of polysaccharide nanocrystals reinforced polymer nanocomposites

Author

Dufresne, Alain, Leclerc, Sylvie, Laboratoire Génie des procédés papetiers (LGP2 ), and Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Published
2008

99. Polysaccharide nanocrystals reinforced nanocomposites

Author

Dufresne, Alain, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), and Leclerc, Sylvie

Subjects
[SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2008

100. Surface modification of cellulose fibres

Author

Mohamed Naceur Belgacem, Alessandro Gandini, Leclerc, Sylvie, M.N. BELGACEM, A. GANDINI, Laboratoire Génie des procédés papetiers (LGP2 ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique de Grenoble (INPG)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), and Watin, Pascale

Subjects
Materials science, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, Infrared spectroscopy, surface characterisation, 02 engineering and technology, 010402 general chemistry, lcsh:Chemical technology, 01 natural sciences, Contact angle, chemistry.chemical_compound, Polymer chemistry, Inverse gas chromatography, Chemical Engineering (miscellaneous), Molecule, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, lcsh:TP1-1185, Cellulose, chemical grafting, Organic Chemistry, surface treatment, 021001 nanoscience & nanotechnology, Grafting, 0104 chemical sciences, Hydrophobe, Cellulose fibres, chemistry, Surface modification, 0210 nano-technology
Abstract

Several approaches to the modification of cellulose fibres are described, namely: (i) physical treatments such as corona or plasma treatments under different atmospheres; (ii) grafting with hydrophobic molecules using well-known sizing compounds; (iii) grafting with bi-functional molecules, leaving one of the functions available for further exploitation; and (iv) grafting with organometallic compounds. The modified surfaces were characterized by elemental analysis, contact angle measurements, inverse gas chromatography, X-ray photoelectron and infrared spectroscopy, wettability, etc. These different tools provided clear-cut evidence of the occurrence of chemical reactions between the grafting agent used and the hydroxy functions of the cellulose surface, as well as of the existence of covalent bonding in the ensuing composite materials between the matrix and the fibres through the use of doubly reactive coupling agents.

Published
2008

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