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14 results on '"Materia Nova asbl, Laboratory of Polymeric '

1. Calcium carbonate and ammonium polyphosphate flame retardant additives formulated to protect ethylene vinyl acetate copolymer against fire: Hydrated or carbonated calcium?

Author

Laoutid, Fouad, Movahedifar, Elnaz, Laheurte, Pascal, Cochez, Marianne, Brison, Loïc, Sari, Morteza Ganjaee, Saeb, Mohammad Reza, Shabanian, Meisam, Khaleghi, Mahroo, Vahabi, Henri, Vagner, Christelle, Zarrintaj, Payam, Khalili, Reza, Paran, Seyed Mohammad Reza, Ramezanzadeh, Bahram, Mozafari, Masoud, University of Mons [Belgium] (UMONS), Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Department of Polymer Engineering [Amirkabir University of Technology], Amirkabir University of Technology (AUT), Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, Université de Mons (UMons), Institute for Color Science and Technology, Institute of Standards and Industrial Researches of Iran, Laboratoire de Chimie et Applications (LCA), Université Paul Verlaine - Metz (UPVM), and Faculty of Engineering, University of Tehran

Subjects
010407 polymers, Thermogravimetric analysis, Polymers and Plastics, General Chemical Engineering, chemistry.chemical_element, Calcium, 01 natural sciences, chemistry.chemical_compound, Flame retardancy, Materials Chemistry, [CHIM]Chemical Sciences, Ammonium polyphosphate, Calcium oxide, ComputingMilieux_MISCELLANEOUS, Marketing, Mass loss calorimetry, Ethylene-vinyl acetate, [CHIM.MATE]Chemical Sciences/Material chemistry, General Chemistry, 0104 chemical sciences, [CHIM.POLY]Chemical Sciences/Polymers, Calcium carbonate, chemistry, Chemical engineering, Intumescent, Fire retardant
Abstract

International audience; In this study, the effect of the chemical nature of different calcium (Ca)‐based minerals as flame retardant additives in combination with ammonium polyphosphate (APP), in 1:1 proportions, on the flame retardancy behavior and performance of ethylene vinyl acetate copolymer was discussed. Combining APP with partly and completely hydrated calcium oxide led to superior flame‐retardant function detected in mass loss calorimeter measurements with respect to the corresponding system containing carbonated calcium. This privileged character was attributed to the higher reactivity of hydrated Ca‐based fillers toward APP in comparison with Ca carbonate, which induced the formation of an intumescent residue. The difference between reactivity potential of hydrated and dry Ca was demonstrated by the newly formed thermally stable species, and further evidenced by thermogravimetric analysis performed on APP/fillers blends. Moreover, the presence of more crystalline domains in the Ca/phosphorus‐based compounds was evidenced by XRD analysis of the mass loss calorimeter test residues. The results of this work highlight the role of blend additive systems on the performance of flame retardancy of polymer materials.

Published
2020
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2. Tailoring hardness and electrochemical performance of TC4 coated Cu/a-C thin coating with introducing second metal Zr

Author

E. Alibakhshi, Pascal Laheurte, Xavier Noirefalize, Fouad Laoutid, Bahram Ramezanzadeh, Sara Khamseh, Jean-Sébastien Lecomte, Henri Vahabi, Institute for Color Science and Technology, Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, Université de Mons (UMons), Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), and CentraleSupélec-Université de Lorraine (UL)

Subjects
Materials science, 020209 energy, General Chemical Engineering, Alloy, Modulus, 02 engineering and technology, A. Titanium, engineering.material, Electrochemistry, Corrosion, Zirconium carbide, Metal, chemistry.chemical_compound, Coating, Sputtering, 0202 electrical engineering, electronic engineering, information engineering, General Materials Science, General Chemistry, XPSC, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, B. EISB, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, Chemical engineering, visual_art, visual_art.visual_art_medium, engineering, Passive films, 0210 nano-technology, A. Sputtered films
Abstract

International audience; The objective of this study was to develop multifunctional protective biocompatible (Cu, Zr)/a-C: H coatings with good mechanical properties and high corrosion resistance using a sputtering system on the surface of TC4 alloy. Coatings with a higher Zr/Cu ratio showed higher hardness, Young's modulus, and superior bio-corrosion resistance. It was demonstrated that charge transfer resistance of the coating with a higher Zr/Cu ratio enhanced from ∼40 kΩ. cm2 to ∼990 kΩ. cm2 after 168 h of immersion time. The results also showed strong synergistic effects of Cu and Zr, as well as the formation of the zirconium carbide phase on the surface.

Published
2020
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3. Phosphorization of exfoliated graphite for developing flame retardant ethylene vinyl acetate composites

Author

Henri Vahabi, Mohammad Reza Saeb, Ghane Moradkhani, Thibault Parpaite, Mohammad Fasihi, Loic Brison, Fouad Laoutid, Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, Université de Mons (UMons), Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), and Institute for Color Science and Technology

Subjects
lcsh:TN1-997, Poly (ethylene-co-vinyl acetate), Thermogravimetric analysis, Materials science, Mechanical properties, 02 engineering and technology, Calorimetry, 01 natural sciences, Biomaterials, chemistry.chemical_compound, Flame retardancy, 0103 physical sciences, Thermal stability, Graphite, Fourier transform infrared spectroscopy, Composite material, Functionalization, lcsh:Mining engineering. Metallurgy, Ammonium polyphosphate, ComputingMilieux_MISCELLANEOUS, 010302 applied physics, Exfoliated graphite nanoplatelet, Metals and Alloys, Ethylene-vinyl acetate, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Surfaces, Coatings and Films, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, Ceramics and Composites, 0210 nano-technology, Fire retardant
Abstract

Ammonium polyphosphate (APP) was grafted onto the surface of exfoliated graphite nanoplatelet (GNP) to obtain a novel flame retardant, GNP-g-APP, and thereafter was incorporated into the ethylene vinyl acetate (EVA) to improve its flame retardancy. The chemical structures of the precursors and the target product were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and energy dispersive X-ray spectroscopy (EDS) techniques. FTIR spectra appeared at 1056 and 1103 cm−1 were attributed to P O C asymmetric stretching bond, that conformed formation of GNP-g-APP. Thermal stability behaviour and flame retardancy performance of the samples were evaluated by TGA, UL-94, micro-calorimetry, and cone calorimetry. TGA measurements revealed the superiority of GNP-g-APP over GNP. The micro-calorimetry analyses indicated a sharp fall in both the total heat release (THR) and the peak of heat release rate (pHRR) of EVA containing 30 wt.% GNP-g-APP, evidenced by a thick char layer formed as barrier. Cone calorimetry confirmed flame-retardant effect of GNP-g-APP featured by a reduction in pHRR (−63 %) and THR (−31.6 %) due to the formation of a cohesive char layer. Although GNP addition sharply decreased the elongation at break of 70/30 (w/w) composites from 500% for neat EVA to 71%, a very promising value of 364% for EVA/GNP-g-APP sample preserved superior flexibility.

Published
2020
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4. Silane‐functionalized Al 2 O 3 ‐modified polyurethane powder coatings: Nonisothermal degradation kinetics and mechanistic insights

Author

Henri Vahabi, P. Poornima Vijayan, Behzad Shirkavand Hadavand, Maryam Jouyandeh, Hamed Fakharizadeh Bafghi, Mohammad Reza Saeb, Reza Khalili, Fouad Laoutid, Seyed Mohamad Reza Paran, Institute for Color Science and Technology, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, and Université de Mons (UMons)

Subjects
Materials science, Polymers and Plastics, Degradation kinetics, Thermosetting polymer, 02 engineering and technology, General Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Silane, 0104 chemical sciences, Surfaces, Coatings and Films, chemistry.chemical_compound, Differential scanning calorimetry, [CHIM.POLY]Chemical Sciences/Polymers, Chemical engineering, chemistry, Materials Chemistry, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS, Polyurethane
Abstract

International audience

Published
2020
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5. Super‐crosslinked ionic liquid‐intercalated montmorillonite/epoxy nanocomposites: Cure kinetics, viscoelastic behavior and thermal degradation mechanism

Author

Alibakhshi, Eiman, Lecomte, Jean-Sébastien, Laheurte, Pascal, Noirefalize, Xavier, Laoutid, Fouad, Milan, Peiman Brouki, Khamseh, Sara, Zarrintaj, Payam, Ramezanzadeh, Bahram, Badawi, Michaël, Morisset, Sophie, Mozafari, Masoud, Seidi, Farzad, Jouyandeh, Maryam, Akbari, Vahideh, Paran, Seyed Mohamad Reza, Livi, Sebastian, Ducos, Franck, Vahabi, Henri, Ganjali, Mohammad Reza, Saeb, Mohammad Reza, Payame Noor University, Laboratoire d'étude des textures et application aux matériaux (LETAM), Université Paul Verlaine - Metz (UPVM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, Université de Mons (UMons), Cellular and Molecular Biology Research Center [Tehran, Iran] (SBU), Shahid Beheshti University of Medical Sciences [Tehran] (SBUMS), Shahid Beheshti University-Shahid Beheshti University, Institute for Color Science and Technology, University of Tehran, Laboratoire de Physique et Chimie Théoriques (LPCT), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers-Centre National de la Recherche Scientifique (CNRS), Materials and Energy Research center, Vidyasirimedhi Institute of Science and Technology, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Centre de Mise en Forme des Matériaux (CEMEF), and Centre National de la Recherche Scientifique (CNRS)-PSL Research University (PSL)-MINES ParisTech - École nationale supérieure des mines de Paris

Subjects
Materials science, Polymers and Plastics, Kinetics, General Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, Epoxy nanocomposites, Viscoelasticity, chemistry.chemical_compound, Montmorillonite, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, Chemical engineering, Ionic liquid, Thermal, Materials Chemistry, Degradation (geology), Mechanism (sociology), ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2020
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6. Curing Kinetics and Thermal Stability of Epoxy Composites Containing Newly Obtained Nano-Scale Aluminum Hypophosphite (AlPO2)

Author

Mohammad Reza Saeb, Philippe Dubois, Maryam Jouyandeh, Fouad Laoutid, Farimah Tikhani, Shahab Moghari, Henri Vahabi, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, Université de Mons (UMons), Institute for Color Science and Technology, University of Tehran, and Université de Lorraine (UL)-CentraleSupélec

Subjects
Thermogravimetric analysis, Materials science, Polymers and Plastics, Scanning electron microscope, epoxy nanocomposite, 02 engineering and technology, 010402 general chemistry, 7. Clean energy, 01 natural sciences, lcsh:QD241-441, chemistry.chemical_compound, Differential scanning calorimetry, lcsh:Organic chemistry, Thermal stability, Composite material, nano-scale aluminum hypophosphite, Curing (chemistry), ComputingMilieux_MISCELLANEOUS, Hypophosphite, thermosetting resins, General Chemistry, Epoxy, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, cure kinetics, 0104 chemical sciences, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, cure index, visual_art, visual_art.visual_art_medium, 0210 nano-technology, Glass transition
Abstract

For the first time, nano-scale aluminum hypophosphite (AlPO2) was simply obtained in a two-step milling process and applied in preparation of epoxy nanocomposites varying concentration (0.1, 0.3, and 0.5 wt.% based on resin weight). Studying the cure kinetics and thermal stability of these nanocomposites would pave the way toward the design of high-performance nanocomposites for special applications. Scanning electron microscopy (SEM) and transmittance electron microscopy (TEM) revealed AlPO2 particles having domains less than 60 nm with high potential for agglomeration. Excellent (at heating rate of 5 &deg, C/min) and Good (at heating rates of 10, 15 and 20 &deg, C/min) cure states were detected for nanocomposites under nonisothermal differential scanning calorimetry (DSC). While the dimensionless curing temperature interval (&Delta, T*) was almost equal for epoxy/AlPO2 nanocomposites, dimensionless heat release (&Delta, H*) changed by densification of polymeric network. Quantitative cure analysis based on isoconversional Friedman and Kissinger methods gave rise to the kinetic parameters such as activation energy and the order of reaction as well as frequency factor. Variation of glass transition temperature (Tg) was monitored to explain the molecular interaction in the system, where Tg increased from 73.2 &deg, C for neat epoxy to just 79.5 &deg, C for the system containing 0.1 wt.% AlPO2. Moreover, thermogravimetric analysis (TGA) showed that nanocomposites were thermally stable.

Published
2020
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7. Improving the impact resistance of PLA by adding a thermoplastic elastomer and the influence of 3D printing process on the mechanical properties of the modified PLA

Author

Samir Kasmi, Julien Cayuela, Bertrand de Backer, Eric Labbé, Sébastien ALIX, ALIX, Sébastien, Institut de Thermique, Mécanique, Matériaux (ITheMM), Université de Reims Champagne-Ardenne (URCA), Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, and Université de Mons (UMons)

Subjects
[CHIM.POLY] Chemical Sciences/Polymers, [CHIM.MATE] Chemical Sciences/Material chemistry, [CHIM.POLY]Chemical Sciences/Polymers, [CHIM.MATE]Chemical Sciences/Material chemistry, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2020

8. Description of complementary actions of mineral and organic additives in thermoplastic polymer composites by Flame Retardancy Index

Author

Christelle Vagner, Loic Brison, Reza Khalili, Mohammad Reza Saeb, Fouad Laoutid, Marianne Cochez, Franck Ducos, Elnaz Movahedifar, Henri Vahabi, Mohammad Reza Ganjali, Negar Rahmati, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), CentraleSupélec-Université de Lorraine (UL), Laboratory of Polymeric and Composite Materials, Université de Mons-Hainaut (LPCM), Université de Mons-Hainaut, Amirkabir University of Technology (AUT), Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, Université de Mons (UMons), IUT Moselle Est, Université de Lorraine (UL), University of Tehran, Matériaux divisés, interfaces, réactivité, électrochimie (MADIREL), and Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Index (economics), Mineral, Polymers and Plastics, 02 engineering and technology, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, Calcium carbonate, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, [CHIM]Chemical Sciences, Composite material, 0210 nano-technology, Thermoplastic polymer, Ammonium polyphosphate, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019
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9. Novel nanocomposites based on poly(ethylene- co -vinyl acetate) for coating applications: The complementary actions of hydroxyapatite, MWCNTs and ammonium polyphosphate on flame retardancy

Author

R. Mangin, Mohammad Reza Saeb, Henri Vahabi, Fatemeh Gholami, Valeriia Karaseva, Fouad Laoutid, Rodolphe Sonnier, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS), Université de Lorraine (UL)-CentraleSupélec, Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, Université de Mons (UMons), Pôle Matériaux Polymères Avancés (Pôle MPA), Centre des Matériaux des Mines d'Alès (C2MA), IMT - MINES ALES (IMT - MINES ALES), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-IMT - MINES ALES (IMT - MINES ALES), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), and Institute for Color Science and Technology

Subjects
Thermogravimetric analysis, Materials science, General Chemical Engineering, 02 engineering and technology, engineering.material, 010402 general chemistry, 7. Clean energy, 01 natural sciences, chemistry.chemical_compound, Coating, Cone calorimeter, Materials Chemistry, Vinyl acetate, Thermal stability, Composite material, Ammonium polyphosphate, ComputingMilieux_MISCELLANEOUS, Nanocomposite, Organic Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Surfaces, Coatings and Films, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, engineering, 0210 nano-technology, Fire retardant
Abstract

Nowadays, researchers working in the realm of coating or related industries are expected to propose novel materials with multifunctional capabilities. In this work, novel nanocomposites based on poly(ethylene-co-vinyl-acetate) (EVA) copolymer, hydroxyapatite (HA), carbon nanotubes (CNTs) and ammonium polyphosphate (APP) are proposed and examined for thermal stability and flammability. Thermogravimetric analysis and cone calorimeter tests evidenced that HA/CNTs combination presents a promising effect on both thermal and flame retardancy behavior of EVA. Cone calorimeter results approved in a similar manner that the incorporation of only 5 wt.% HA-CNTs into the EVA significantly drops peak of heat release rate (pHRR) (around 37%). The flame retardant effect was further improved when HA or HA-CNTs were associated with APP. The pHRR decreased by 76–77% for EVA containing HA or HA-CNTs and APP compared to the neat EVA. The performance of developed nanocomposites was compared with more than 100 flame retardant systems previously reported in the literature.

Published
2017
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10. Prediction of thermosets flammability using a model based on group contributions

Author

Richard E. Lyon, Natalia Safronava, Leila Bonnaud, Philippe Dubois, Richard N. Walters, Raphaël Ménard, Belkacem Otazaghine, Loïc Dumazert, Amandine Viretto, Rodolphe Sonnier, Ludovic Dumas, Pôle Matériaux Polymères Avancés (Pôle MPA), Centre des Matériaux des Mines d'Alès (C2MA), IMT - MINES ALES (IMT - MINES ALES), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-IMT - MINES ALES (IMT - MINES ALES), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Ingénierie des Matériaux Polymères (IMP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, Université de Mons (UMons), and Federal Aviation Administration (FAA)

Subjects
Materials science, Polymers and Plastics, Heteroatom, Thermosetting polymer, Thermodynamics, 02 engineering and technology, Calorimetry, Van Krevelen approach, Polymer flammability, 010402 general chemistry, 01 natural sciences, [SPI]Engineering Sciences [physics], Materials Chemistry, Char, Composite material, Flammability, Organic Chemistry, Aromaticity, Epoxy, 021001 nanoscience & nanotechnology, Thermosets, 0104 chemical sciences, Covalent bond, visual_art, visual_art.visual_art_medium, 0210 nano-technology, Pyrolysis-combustion flow calorimetry
Abstract

International audience; From a set of around 30 thermosets (polycyanurates, polybenzoxazines, epoxy and phtalonitrile resins) tested in pyrolysis-combustion flow calorimetry, the contributions to flammability of 14 new chemical groups are calculated using a method previously proposed and validated. The flammability properties include total heat release, heat release capacity and char content. The comparison between these groups allows drawing some consistent conclusions about the best structures in terms of flammability. Especially, the aromaticity, the number of covalent bonds between the considered chemical group and the neighboring groups and the presence of heteroatoms (O, N) in the structure are highlighted.

Published
2017
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11. Poly(3-Hexylthiophene) vs. Spiro-OMeTAD as Hole Transporter Materials for ssDSSCs

Author

Clément, Sébastien, Michèle, Chevrier, Sébastien, Richeter, Surin, Mathieu, Mehdi, Ahmad, Dubois, Philippe, Bouclé, Johann, Lazzaroni, Roberto, Bouclé, Johann, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie des Matériaux et Polymères (SMPC), Université de Mons-Hainaut, Univ Mons, Belgique, Serv Chim Mat Nouveaux, Université de Mons (UMons), Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, RF-ELITE : RF-Electronique Imprimée pour les Télécommunications et l'Energie (XLIM-RFEI), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), and Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)

Subjects
[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, [PHYS.COND.CM-MS] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
Abstract

International audience

Published
2017

12. Poly(3-hexylthiophene) vs. Spiro-OMeTAD as hole transporter materials for ss-DSSCs

Author

Chevrier, Michèle, Richeter, Sebastien, Surin, Mathieu, Ahmad, Mehdi, Lazzaroni, Roberto, Dubois, Philippe, Bouclé, Johann, Clément, Sébastien, Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, Université de Mons (UMons), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratory for Chemistry of Novel Materials, RF-ELITE : RF-Electronique Imprimée pour les Télécommunications et l'Energie (XLIM-RFEI), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), and Bouclé, Johann

Subjects
[PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, [PHYS.COND.CM-MS] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016

13. Metallic phytates as efficient bio-based phosphorous flame retardant additives for poly(lactic acid)

Author

Christian Delvosalle, Sylvain Brohez, Philippe Dubois, Loïc Dumazert, Lucie Costes, Fouad Laoutid, José-Marie Lopez-Cuesta, Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, Université de Mons (UMons), Pôle Matériaux Polymères Avancés (Pôle MPA), Centre des Matériaux des Mines d'Alès (C2MA), IMT - MINES ALES (IMT - MINES ALES), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-IMT - MINES ALES (IMT - MINES ALES), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Department of Chemical Engineering, Faculté polytechnique de Mons, and Université de Mons (UMons)-Université de Mons (UMons)

Subjects
Thermogravimetric analysis, Materials science, Polymers and Plastics, Sodium, chemistry.chemical_element, Calorimetry, Condensed Matter Physics, Lactic acid, chemistry.chemical_compound, [SPI]Engineering Sciences [physics], chemistry, Chemical engineering, 13. Climate action, Mechanics of Materials, Bio-based flame retardant, Cone calorimeter, Metallic phytates, Poly(lactic acid), Materials Chemistry, Lanthanum, Organic chemistry, Pyrolysis, Fire retardant
Abstract

International audience; In this study, we evaluated the potential flame retardant effect of different metallic phytates as bio-sourced phosphorous additives for poly(lactic acid) (PLA). Starting from sodium phytate, the sodium cations were replaced by aluminum, iron or lanthanum cations as attested by elemental analysis. PIA-metallic phytate composites containing 20 or 30 wt% of additives were produced by melt blending in an internal mixer and their fire properties, thermogravimetric resistance have been characterized as well as the PLA chain degradation occurring during melt processing. The most significant flame retardant effect, observed by cone calorimeter test, was obtained when aluminum phytate was used. Cone calorimeter testing combined with pyrolysis combustion flow calorimetry (PCFC) analysis indicated that the barrier effect was more significant in the case of PLA filled with aluminum phytate. However, aluminum phytate proved to be responsible for PIA chain degradation during melt processing. Combinations of metallic phytate and native sodium phytate overcame this negative effect and allowed for limiting the thermal degradation of PLA during melt processing while preserving good fire performances, i.e. significant pHRR reduction and V-2 classification in UL-94 test.

Published
2015
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14. Mélanges Nanocomposites Polypropylène/Polyamide 6/Montmorillonite : Effet des nanocharges sur la morphologie et les propriétés mécaniques résultantes

Author

Lemény, David, Soulestin, Jérémie, Lacrampe, Marie-France, Krawczak, Patricia, Laoutid, Fouad, Khélifi, Skander, Département Technologie des Polymères et Composites & Ingénierie Mécanique (TPCIM), École des Mines de Douai (Mines Douai EMD), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Ministère de l'Economie, des Finances et de l'Industrie, Materia Nova asbl, Laboratory of Polymeric & Composite Materials, University of Mons, Université de Mons (UMons), CREPIM, and AMAC

Subjects
[PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph], polyamide, polypropylène, nanocharge, [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph], compatibilisation
Abstract

International audience; Des mélanges de polypropylène(PP)/polyamide (PA) contenant soit du polypropylène greffé anhydride maléique (PP-g-MA), soit une phase nanocomposite à base de Montmorillonite (PP-MMT) ont été préparés par extrusion bi-vis puis moulés par injection. La morphologie des mélanges a été caractérisée par microscopie électronique à balayage. Les résultats montrent un affinement de la morphologie en présence de PP-g-MA avec une amélioration de la cohésion interfaciale. En présence de montmorillonite, un affinement de la morphologie est également observé. Dans ce dernier cas une diminution de la tension interfaciale a été mise en évidence grâce à l'analyse morphologique et les mesures rhéologiques effectuées sur les mélanges. L'effet de l'ajout de PP-g-MA ou de montmorillonite sur les propriétés mécaniques a également été étudié. La rigidité du mélange PP/PA est améliorée aussi bien par l'ajout de PPgMA que par l'ajout de montmorillonite. Cette évolution est cependant plus marquée pour le système ayant une phase nanocomposite. La déformation à la rupture pour le mélange contenant la MMT n'est pas améliorée contrairement à ce qui est obtenu lors de l'ajout de PPgMA..

Published
2011

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