Pressure dependence of the local and global dynamics of polyisoprene

被引：100

作者：

Floudas, G

Reisinger, T

机构：

[1] FORTH, Inst Elect Struct & Laser, Heraklion 71110, Crete, Greece

[2] Max Planck Inst Polymerforsch, D-55021 Mainz, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 1999年 / 111卷 / 11期

关键词：

D O I：

10.1063/1.479774

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on the pressure dependence of the local segmental and normal modes of a type-A polymer (polyisoprene) using dielectric spectroscopy. We find that external pressure exerts a stronger influence on the dynamics of the segmental mode as compared to the longest normal mode which results in the crossing of the two modes at higher pressures. The predictions of the Rouse model are not adequate to explain the different shift factors even at elevated temperatures. (C) 1999 American Institute of Physics. [S0021- 9606(99)50135-9].

引用

页码：5201 / 5204

页数：4

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