Role of Dynamical Heterogeneities on the Mechanical Response of Confined Polymer

doi:10.1103/PhysRevLett.118.047801

	Role of Dynamical Heterogeneities on the Mechanical Response of Confined Polymer
	Masurel, R J 2; Gelineau, P 2; Cantournet, S 3; Dequidt, A 1; Long, D R 4; Lequeux, F 2; Montes, H 2
刊名	Physical review letters
	2017-01-27
卷号	118 期号:4 页码:047801
ISSN号	1079-7114
DOI	10.1103/PhysRevLett.118.047801
文献子类	Article
英文摘要	Confinement induces various modifications in the dynamics of polymers as compared to bulk. We focus here on the role of dynamical heterogeneities on the mechanics of confined polymers. Using a simple model that allows computation of the mechanical response over 10 decades in frequency, we show that the local mechanical coupling controlling the macroscopic response in the bulk disappears in a confined geometry. The slowest domains significantly contribute to the mechanical response for increasing confinement. As a consequence, the apparent glass transition is broadened and shifted towards lower frequencies as confinement increases. We compare our numerical predictions with experiments performed on poly(ethylacrylate) chains in model filled elastomers. We suggest that the change of elastic coupling between domains induced by confinement should contribute significantly to the polymer mobility shift observed on filled systems.
语种	英语
内容类型	期刊论文
源URL	[http://119.78.100.183/handle/2S10ELR8/266799]
专题	中国科学院上海药物研究所
作者单位	1.Univ. Clermont Ferrand, Inst. Chim. Clermont Ferrand, UMR 6296, F-63171 Aubiere, France; 2.Laboratoire Sciences et Ingénierie de la Matière Molle (SIMM), CNRS-UMR 7615, Ecole Supérieure de Physique et Chimie Industrielles de Paris (ESPCI Paris), PSL Research University, Université Pierre et Marie Curie (UPMC), Sorbonne-Universités, 10 rue Vauquelin, F-75005 Paris, France; 3.MINES ParisTech, PSL-Research University, MAT-Centre des Matériaux, CNRS UMR 7633, BP 87 91003 Evry, France; 4.Laboratoire Polymères et Matériaux Avancés, UMR 5268 CNRS/Solvay, 87, rue des frères Perret, F-69192 Saint Fons, France
推荐引用方式 GB/T 7714	Masurel, R J,Gelineau, P,Cantournet, S,et al. Role of Dynamical Heterogeneities on the Mechanical Response of Confined Polymer[J]. Physical review letters,2017,118(4):047801.
APA	Masurel, R J.,Gelineau, P.,Cantournet, S.,Dequidt, A.,Long, D R.,...&Montes, H.(2017).Role of Dynamical Heterogeneities on the Mechanical Response of Confined Polymer.Physical review letters,118(4),047801.
MLA	Masurel, R J,et al."Role of Dynamical Heterogeneities on the Mechanical Response of Confined Polymer".Physical review letters 118.4(2017):047801.