14 results on '"Ruch, David"'
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2. Post_Operative_Instructions_for_CTS – Supplemental material for Return to Activities After Simultaneous Bilateral Endoscopic Carpal Tunnel Release
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Hein, Rachel E., Hollins, Andrew W., Fletcher, Amanda N., Ruch, David S., Richard, Marc J., and Mithani, Suhail K.
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FOS: Clinical medicine ,Medicine ,110604 Sports Medicine ,FOS: Health sciences ,110314 Orthopaedics - Abstract
Supplemental material, Post_Operative_Instructions_for_CTS for Return to Activities After Simultaneous Bilateral Endoscopic Carpal Tunnel Release by Rachel E. Hein, Andrew W. Hollins, Amanda N. Fletcher, David S. Ruch, Marc J. Richard and Suhail K. Mithani in HAND
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- 2020
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3. Water Sensitive Coatings Deposited by Aerosol Assisted Atmospheric Plasma Process: Tailoring the Hydrolysis Rate by the Precursor Chemistry
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Mertz, Gregory, Fouquet, Thierry, Ibn El Ahrach, Hicham, Becker, Claude, Phan, Trang N. T., Ziarelli, Fabio, Gigmes, Didier, Ruch, David, Luxembourg Institute of Science and Technology (LIST), Institut de Chimie Radicalaire (ICR), Aix Marseille Université (AMU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Spectropôle - Aix Marseille Université (AMU SPEC), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), and Materials Research and Technology (MRT) Department, Luxembourg Institute of Science and Technology (LIST)
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[CHIM]Chemical Sciences - Abstract
International audience; Biocompatible plasma polymers are expected to be used in various applications in medicine such as drug delivery with a controlled release. In this context we investigated the possibility to monitor the kinetic of hydrolytic degradation of plasma polymers by tailoring the chemistry of the precursor. A homemade precursor way synthesized by grafting acrylate function on both side of a polycaprolactone diol (PCL diol) to produce a PCL diacrylate characterized by IR, NMR, and MS to confirm its chemical structure. Acrylates constitute a promising class of precursors to improve the retention of the integrity of the precursor by working in soft plasma conditions. The plasma polymerization of the so-synthesized precursor have been highlighted by means of a multi technique analytical strategy and ensured the retention of hydrolyzable ester function of the precursor. Finally the thickness consumption during immersion in PBS were performed and found to be slower as compared to the degradation kinetic of a plasma polymerized methacrylic anhydride.
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- 2015
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4. Time-resolved small-angle X-ray scattering study of void fraction evolution in high-density polyethylene during stress unloading and strain recovery
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Addiego, Frédéric, Patlazhan, Stanislav, Wang, Kui, André, Stéphane, Bernstorff, Sigrid, Ruch, David, Materials Research and Technology (MRT) Department, Luxembourg Institute of Science and Technology (LIST), N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences [Moscow] (RAS), Laboratoire Énergies et Mécanique Théorique et Appliquée (LEMTA ), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), and Elettra Sincrotrone Trieste
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[SPI]Engineering Sciences [physics] - Abstract
International audience; By means of time-resolved small-angle X-ray scattering, we developed an analysis methodology to assess the void volume fraction ϕv in high-density polyethylene (HDPE) during tensile testing. The specimens were first drawn up to different imposed strains, and subsequently were subjected to stress unloading and strain recovery stages. During the loading stage, ϕv progressively increased with the strain level, starting from a well-defined onset strain prior to the yield point. In particular, ϕv reached a maximum of 8.75 vol% for a strain of 12.5% in the case of a HDPE grade with a molecular weight of 105 000 g mol−1. Stress unloading and strain recovery caused a decrease in ϕv attained at the end of the loading stage. For a HDPE grade with a molecular weight of 55 000 g mol−1, ϕv was more important during the loading stage and the decrease in ϕv was less marked during the stress unloading stage when compared to the HDPE with molecular weight of 105 000 g mol−1. The residual and reversible components of void volume fraction were revealed.
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- 2015
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5. Tandem mass spectrometry of incompletely and fully condensed POSS – folding and unfolding routes
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Fouquet, Thierry, Charles, Laurence, and Ruch, David
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- 2014
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6. Insights in the Architecture of Silicon-Based Plasma Polymers Using Partial Network Ethanolysis Combined with Electrospray Tandem Mass Spectrometry
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Fouquet, Thierry, Petersen, Julien, Ziarelli, Fabio, Bour, Jerôme, Toniazzo, Valerie, Ruch, David, Charles, Laurence, Institut de Chimie Radicalaire (ICR), Aix Marseille Université (AMU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Fédération des Sciences Chimiques de Marseille (FRSCM), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Advanced Materials and Structures, Centre de Recherche Public Henri-Tudor [Luxembourg] (CRP Henri-Tudor), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)
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[CHIM]Chemical Sciences - Abstract
International audience; Thin films obtained upon plasma polymerization of D4 and HMDSO precursors at atmospheric pressure are submitted to controlled ethanolysis to produce oligomers amenable to electrospray mass spectrometry. When using high resolution mass spectrometry to assess their elemental composition and tandem mass spectrometry to characterize their end-groups, a whole set of ethanolysis products is identified, from which the network connectivity in the original film can be reconstructed. Ethanolysis products of ppD4 and ppHMDSO exhibit the same structural features composed of linear and cross-linked PDMS moieties, the extent of cross-linking reflecting the inorganic character of the film. Oligomers originally embedded in the solid network and released as intact species upon its dissolution are also observed. [GRAPHICS] .
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- 2013
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7. In Situ Mechanical Characterization of Short Vegetal Fibre-Reinforced High-Density Polyethylene Using X-Ray Tomography
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Kaouache, Belkhiri, Addiego, Frédéric, Hiver, Jean-Marie, Ferry, Olivier, Toniazzo, Valerie, Ruch, David, Laboratoire de physique et mécanique des matériaux (LPMM), Université Paul Verlaine - Metz (UPVM)-Institut National Polytechnique de Lorraine (INPL)-Ecole Nationale d'Ingénieurs de Metz (ENIM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des matériaux (LPM), Université Henri Poincaré - Nancy 1 (UHP)-Institut National Polytechnique de Lorraine (INPL)-Centre National de la Recherche Scientifique (CNRS), Institut Jean Lamour (IJL), Université de Lorraine (UL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Advanced Materials and Structures, and Centre de Recherche Public Henri-Tudor [Luxembourg] (CRP Henri-Tudor)
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[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism - Abstract
International audience; X-ray micro-computed tomography (CT) is used to generate 3D- and 2D-imaging reconstruction of the meso-structure of high-density polyethylene (HDPE)/short hemp fibre composites subjected to in situ tensile testing. These composites exhibit marked fibre/matrix debonding mechanisms starting at low strain level that are carefully analysed. In particular, debonding causes the formation of micro-cracks that first starts at the tip of fibres oriented parallel to the tensile direction and along fibres oriented perpendicular to the tensile direction. With increasing strain level, the thickness of these micro-cracks increases and coalescence mechanisms between adjacent micro-cracks are noted. The coalescence mechanism of some micro-cracks is believed to be at the origin of the material rupture.
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- 2013
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8. Collision-induced dissociation of synthetic polymers containing hydride groups: the case of poly(methylhydrosiloxane) homopolymers and poly(methylhydrosiloxane)-co-(dimethylsiloxane) copolymers
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Fouquet, Thierry, Chendo, Christophe, Toniazzo, Valerie, Ruch, David, Charles, Laurence, Institut de Chimie Radicalaire (ICR), Aix Marseille Université (AMU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Advanced Materials and Structures, and Centre de Recherche Public Henri-Tudor [Luxembourg] (CRP Henri-Tudor)
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[CHIM]Chemical Sciences - Abstract
International audience; RATIONALE When substituting one methyl moiety by a hydrogen atom in each end-group of a trimethylsilyl-terminated poly(dimethylsiloxane) (PDMS), dissociation reactions of oligomers adducted with ammonium were observed to proceed at a much higher rate, evidencing the high reactivity of hydride groups. Polymeric molecules containing methylhydrosiloxane (MHS) units could thus be expected to exhibit a different tandem mass spectrometric (MS/MS) behavior from PDMS. METHODS Trimethylsilyl-terminated PMHS and trimethylsilyl-terminated poly(MHS)-co-(DMS) were electrosprayed in the gas phase either as ammonium adducts or lithium adducts. Product ions generated upon collision-induced dissociation (CID) were accurately mass measured in an orthogonal acceleration time-of-flight mass analyzer. RESULTS In contrast to PDMS adducted with lithium, useful structural features could be obtained from product ions generated upon CID of lithium adducts of PMHS. The presence of multiple hydride groups in PMHS induced numerous rearrangements when activating ammonium adducts of these oligomers. MS/MS reactions observed for cationic adducts of MHS-DMS co-oligomers were clearly a combination of major dissociation routes established for the corresponding homopolymers. However, the concerted loss of H2 and ammonia typically observed from ammonium adducts of PMHS was always shown to generate a quite abundant product ion even from co-oligomers enriched with DMS units. CONCLUSIONS The high reactivity of hydride moieties, previously evidenced when these groups were at the end of PDMS chains, is also at work in PMHS, where each monomer contains a Si-H function. The presence of these hydride groups would increase the nucleophilic character of the oxygen atoms, favoring a tight bonding of lithium, and hence allowing in-chain cleavages to occur. In PMHS ammonium adducts, the particular reactivity of hydride moieties was illustrated by multiple hydride transfers but also by a dehydrogenation reaction systematically observed to proceed, together with the loss of ammonia, from all precursor ions. This latter reaction remained a very competitive process even from MHS/DMS co-oligomers with a low relative number of MHS units. Copyright (c) 2012 John Wiley & Sons, Ltd.
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- 2013
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9. Characterization of ethanolysis products of poly(dimethylsiloxane) species by electrospray ionization tandem mass spectrometry
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Fouquet, Thierry, Bour, Jerôme, Toniazzo, Valerie, Ruch, David, Charles, Laurence, EDF (EDF), Advanced Materials and Structures, Centre de Recherche Public Henri-Tudor [Luxembourg] (CRP Henri-Tudor), Laboratoire Chimie Provence (LCP), Université de Provence - Aix-Marseille 1-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Université de Provence - Aix-Marseille 1-Institut de Chimie du CNRS (INC)
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technology, industry, and agriculture ,[CHIM]Chemical Sciences - Abstract
International audience; RATIONALE The partial and controlled degradation of insoluble cross-linked silicon-based polymers is a promising approach to enable their characterization by mass spectrometry. Providing that the chemolysis reaction specifically proceeds at cross-linking sites, the size of linear poly(dimethylsiloxane)s (PDMS) produced during the treatment should reflect the length of linear segments between branching points in the original network. In this context, the specificity of ethanol to act as a nucleophilic agent towards tri-functional silicon atoms in a D3TDnTD3 model was evaluated. METHODS Tandem mass spectrometry (MS/MS) combined with accurate mass measurements, MS3 experiments and collision-induced dissociation of authentic compounds was used for structural characterization of D3TDnTD3 ethanolysis products. All MS/MS data were obtained from electrosprayed ammonium adducts, previously reported to provide the most informative data for silicon-based polymers. RESULTS Since the expected ethanolysis products were hydroxy- and ethoxy-terminated PDMS, the dissociation behavior of such polymeric species was established, using electrosprayed ammonium adducts as the precursor ions. Diagnostic product ions were identified, allowing four main D3TDnTD3 ethanolysis products to be structurally characterized. End-group analysis of these polymeric distributions clearly indicated that ethanolysis was mostly occurring on tri-functional silicon atoms but also, to a lesser extent, on those D atoms close to T silicons. CONCLUSIONS The size of the linear skeleton located between two tri-functional silicon atoms could be accurately determined by mass spectrometric analyses of a polymeric model submitted to ethanolysis. This soft and rapid pre-treatment is thus a promising approach for determining the length of linear segments between branching points in the original network of cross-linked silicon-based polymers. Copyright (C) 2012 John Wiley & Sons, Ltd.
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- 2012
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10. Deposition Mechanisms in Layer-by-Layer or Step-by-Step Deposition Methods: From Elastic and Impermeable Films to Soft Membranes with Ion Exchange Properties
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Michel, Marc, Toniazzo, Valérie, Ruch, David, and Ball, Vincent
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Article Subject - Abstract
The modification of solid-liquid interfaces with polyelectrolyte multilayer films appears as a versatile tool to confer new functionalities to surfaces in environmentally friendly conditions. Indeed such films are deposited by alternate dipping of the substrates in aqueous solutions containing the interacting species or spraying these solutions on the surface of the substrate. Spin coating is more and more used to produce similar films. The aim of this short review article is to provide an unifying picture about the deposition mechanisms of polyelectrolyte multilayer films. Often those films are described as growing either in a linear or in a supralinear growth regime with the number of deposited “layer pairs”. The growth regime of PEM films can be controlled by operational parameters like the temperature or the ionic strength of the used solutions. The control over the growth regime of the films as a function of the number of deposition steps allows to control their functional properties: either hard and impermeable films in the case of linear growth or soft and permeable films in the case of supralinear growth. Such different properties can be obtained with a given combination of interacting species by changing the operational parameters during the film deposition.
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- 2012
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11. Full characterization of plasma polymer films under dielectric barrier discharge made from acrylic and methacrylic acid
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Amorosi, Cédric, Fouquet, Thierry, Ruch, David, Avérous, Luc, Ball, Vincent, Michel, Marc, Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse (LMSPC), Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Biomatériaux et Bioingénierie (BB), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), and univOAK, Archive ouverte
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[CHIM.POLY] Chemical Sciences/Polymers ,[CHIM.POLY]Chemical Sciences/Polymers - Published
- 2012
12. Strain rate and temperature response of PMMA/organoclay nanocomposites
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Matadi Boumbimba, Rodrigue, Ahzi, Said, Gueguen, Olivier, Ruch, David, MATADI BOUMBIMBA, RODRIGUE, 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 - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie (ICube), École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Université de Strasbourg (UNISTRA)-Institut National des Sciences Appliquées - Strasbourg (INSA Strasbourg), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Les Hôpitaux Universitaires de Strasbourg (HUS)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA), and Luxembourg Institute of Science and Technology (LIST)
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[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph] ,[SPI.MECA] Engineering Sciences [physics]/Mechanics [physics.med-ph] - Abstract
International audience
- Published
- 2008
13. Characterization and micromechanical modeling of the thermomechanical properties of Poly (methyl methacrylate)/organoclay nanocomposites
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Matadi Boumbimba, Rodrigue, Gueguen, Olivier, Ahzi, Said, Makradi, Ahmed, de Almeida Grácio, José Joaquim, Ruch, David, Muller, René, MATADI BOUMBIMBA, RODRIGUE, 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 - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM), Université de Strasbourg (UNISTRA), Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie (ICube), École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Université de Strasbourg (UNISTRA)-Institut National des Sciences Appliquées - Strasbourg (INSA Strasbourg), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de Recherche en Informatique et en Automatique (Inria)-Les Hôpitaux Universitaires de Strasbourg (HUS)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Luxembourg Institute of Science and Technology (LIST), Departamento de Engenharia Mecanica, Universidade de Aveiro, Campus Universitrio de Santiago, 3810-193 Aveiro, Portugal, Universitrio de Santiago, Institut Charles Sadron (ICS), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique
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[SPI.MAT] Engineering Sciences [physics]/Materials ,[SPI.MAT]Engineering Sciences [physics]/Materials - Abstract
International audience
- Published
- 2008
14. Étude comparée des matériaux polymériques et/ou polysulfurés par ablation/ionisation laser et bombardement ionique couplés à la spectrométrie de masse. : Application à la caractérisation d'élastomères vulcanisés
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Ruch, David and UL, Thèses
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Vulcanisation ,[CHIM.OTHE] Chemical Sciences/Other ,[PHYS.COND.CM-GEN] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other] ,Spectroscopie de masse ,Polymères - Abstract
Not available, La détermination de la composition chimique d'un élastomère utilisé en tant que pneumatique est une science délicate à double titre car elle dépend à la fois des spécifications exigées pour le matériau final et des processus physico-chimiques complexes impliqués dans sa synthèse et en particulier au cours de la vulcanisation. Pour répondre à cette attente, nous avons associé deux techniques de spectrométrie de masse : l'ablation laser (LAMS) et le bombardement ionique (SIMS). Cette association nous a permis de travailler sur l'aspect quantitatif de l'émission secondaire. D'une part, des courbes de calibration ont pu être élaborées pour déterminer le pourcentage de monomères constitutifs de copolymères et pour contr©oler les enchaînements de monomères au sein des copolymères. D'autre part, il a été établi une corrélation entre les signaux SIMS et LAMS et les pourcentages de ponts polysulfidiques créés au cours de la vulcanisation.
- Published
- 2002
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