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2 results on '"Lucien, Saviot"'

1. Effect of physical aging on the low-frequency vibrational density of states of a glassy polymer

Author

Lucien Saviot, S. Etienne, Eugène Duval, L. David, J. F. Jal, Laboratoire de Physico-Chimie des Matériaux Luminescents (LPCML), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Laboratoire de Recherche sur la Réactivité des Solides (LRRS), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Polymères et des Biomatériaux (IMP-LMPB), Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut de Chimie du CNRS (INC), 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), Laboratoire de Physique de la Matière Condensée et Nanostructures (LPMCN), Département de Physique des Matériaux (DPM), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)

Subjects
chemistry.chemical_classification, Materials science, Physical aging, Annealing (metallurgy), FOS: Physical sciences, General Physics and Astronomy, Thermodynamics, Disordered Systems and Neural Networks (cond-mat.dis-nn), Polymer, Condensed Matter - Disordered Systems and Neural Networks, Low frequency, 01 natural sciences, Lower temperature, Inelastic neutron scattering, 010305 fluids & plasmas, chemistry.chemical_compound, Vibrational density of states, chemistry, 0103 physical sciences, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Methyl methacrylate, 010306 general physics
Abstract

The effects of the physical aging on the vibrational density of states (VDOS) of a polymeric glass is studied. The VDOS of a poly(methyl methacrylate) glass at low-energy (, To be published in Europhys. Lett

Published
2003

2. Nanostructure and low-frequency vibrations in plasticized poly(methyl methacrylate)

Author

S. Etienne, L. David, Vladimir A. Bershtein, Marcin Kozanecki, Lucien Saviot, Eugène Duval, V. A. Ryzhov, Laboratoire de Physico-Chimie des Matériaux Luminescents (LPCML), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Laboratoire de Recherche sur la Réactivité des Solides (LRRS), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Matériaux, ingénierie et science [Villeurbanne] (MATEIS), 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 Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Nanostructure, Astrophysics::High Energy Astrophysical Phenomena, Physics::Medical Physics, Analytical chemistry, General Physics and Astronomy, 02 engineering and technology, 01 natural sciences, symbols.namesake, chemistry.chemical_compound, 0103 physical sciences, Methyl methacrylate, 010306 general physics, ComputingMilieux_MISCELLANEOUS, Scattering, Small-angle X-ray scattering, Plasticizer, 021001 nanoscience & nanotechnology, Poly(methyl methacrylate), Condensed Matter::Soft Condensed Matter, chemistry, visual_art, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], symbols, visual_art.visual_art_medium, 0210 nano-technology, Raman scattering, Intensity (heat transfer)
Abstract

The small-angle X-ray scattering (SAXS) and the low-frequency Raman scattering (LFRS) of pure and plasticized poly(methyl methacrylate) (PMMA) samples are compared. A correlation peak in SAXS appears in plasticized PMMA at about 0.15 A−1, which does not exist in pure PMMA. An increase of the boson peak intensity with the amount of plasticizer is observed. These observations allow to sustain the relation between the boson peak and inhomogeneous nanostructure in glasses.

Published
1998

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