Temperature dependence of local chain dynamics in atactic polypropylene: a neutron spin-echo study

被引：13

作者：

Arrighi, V ^{[1
]}

Pappas, C

Triolo, A

Pouget, S

机构：

[1] Heriot Watt Univ, Dept Chem, Edinburgh EH14 4AS, Midlothian, Scotland

[2] Hahn Meitner Inst Berlin GmbH, BENSC, D-14109 Berlin, Germany

[3] Inst Laue Langevin, F-38042 Grenoble, France

来源：

PHYSICA B-CONDENSED MATTER | 2001年 / 301卷 / 1-2期

关键词：

polymers; neutron spin echo; dynamics;

D O I：

10.1016/S0921-4526(01)00530-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report a neutron spin-echo (NSE) study of deuterated atactic polypropylene (aPP) using the multi-detector option on the spectrometer IN11 at the Institut Laue-Langevin (France). Experiments were performed in the temperature range 300-360 K i.e. above the polymer glass transition (T-g = 253 K). Neutron spectra were collected in the e-region (0.8 < Q 1.2 Angstrom (-1)) around the first interference peak of the static structure factor S(Q) at 1.1 Angstrom (-1) which corresponds to intermolecular correlations. As shown recently for polyisobutylene and polybutadiene, the NSE data of aPP display the same temperature dependence as obtained from viscosity measurements. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：157 / 162

页数：6

共 26 条

[1] Molecular dynamics of atactic polypropylene melts [J].