DYNAMICS OF THE ALPHA-PROCESS OF POLYMER SYSTEMS ON A MICROSCOPIC TIMESCALE - NEUTRON AND NUCLEAR-MAGNETIC-RESONANCE STUDY

被引：10

作者：

COLMENERO, J ^{[1
]}

ALEGRIA, A ^{[1
]}

ALBERDI, JM ^{[1
]}

FRICK, B ^{[1
]}

机构：

[1] INST MAX VON LAUE PAUL LANGEVIN, F-38042 GRENOBLE, FRANCE

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1991年 / 131卷

关键词：

D O I：

10.1016/0022-3093(91)90707-D

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The dynamics of the alpha-process in poly(vinyl methyl ether) (PVME) on a microscopical timescale have been studied by means of nuclear magnetic resonance and incoherent quasi-elastic neutron scattering techniques. The experimental data have been interpreted in terms of a spectral density function, J(omega), and a scattering law, S(Q, omega), which were built starting from the Havriliak-Negami relaxation function. The results obtained have been compared with the dielectric and mechanical relaxation behaviour of the alpha-process. It appears that the dynamics of the alpha-process of PVME on a wide time range (1 to 10(-10) s) can be described by using the same time-temperature behaviour and the same Havriliak-Negami 'shape-parameters'.

引用

页码：949 / 954

页数：6

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