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Philosophical Magazine B Volume 82, 2002 - Issue 5
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Original Articles

Low-energy vibrational density of states of plasticized poly(methyl methacrylate)

L. Saviot Laboratoire de Physico-Chimie des Matériaux Luminescents, Université Lyon 1, Unité Mixte de Recherche associée au CNRS 5620, 43 boulevard du 11 Novembre, 69622, Villeurbanne, Cedex, France
,
E. Duval Laboratoire de Physico-Chimie des Matériaux Luminescents, Université Lyon 1, Unité Mixte de Recherche associée au CNRS 5620, 43 boulevard du 11 Novembre, 69622, Villeurbanne, Cedex, France
,
J. F. Jal Départment de Physique des Matériaux, Université Lyon 1, Unité Mixte de Recherche associée au CNRS 5586, 43 boulevard du 11 Novembre, 69622, Villeurbanne, Cedex, France
,
A. J. Dianoux Institut Laue-Langevin, 38042, Grenoble, Cedex, France
,
V. A. Bershtein Ioffe Physico-technical Institute, Russian Academy of Sciences, St Petersburg, 194021, Russia
,
L. David Groupe d'Etudes de Métallurgie Physique et de Physique des Matériaux, Unité Mixte de Recherche associée au CNRS 5510, Institut National des Sciences Appliquées de Lyon, 69621, Villeurbanne, Cedex, France
&
and S. Etienne Laboratoire de Physique des Matériaux Unité Mixte de Recherche associée au CNRS 7556, Ecole des Mines, 54042, Nancy, Cedex, France
 show all
Pages 533-539 | Published online: 04 Aug 2009
 

Abstract

The low-energy vibrational density of states (VDOS) of hydrogenated or deuterated poly(methyl methacrylate) (PMMA) plasticized by dibutyl phthalate (DBP) is determined by inelastic neutron scattering. From experiment, it is equal to the sum of VDOSs of the PMMA and DBP components. However, a partition of the total low-energy VDOS between PMMA and DBP was observed. Contrary to Raman scattering, neutron scattering does not show enhancement of the boson peak due to plasticization.

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