Dynamics of poly(propylene sulfide) studied by dynamic mechanical measurements and dielectric spectroscopy

被引：28

作者：

Nicol, E ^{[1
]}

Nicolai, T ^{[1
]}

Durand, D ^{[1
]}

机构：

[1] Univ Maine, UMR, CNRS, F-72085 Le Mans 9, France

来源：

MACROMOLECULES | 1999年 / 32卷 / 22期

关键词：

D O I：

10.1021/ma990853f

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Dynamical properties of bulk poly(propylene sulfide) (PPS) were investigated for a range of molar masses between 600 and 50 000 g/mol. The primary and secondary relaxation (alpha-relaxation and beta-relaxation) were studied using dielectric spectroscopy. The local segmental relaxation (alpha-relaxation) and the chain backbone conformational relaxation were studied using dynamic mechanical measurements. The dynamical properties of PPS are compared to those of poly(propylene oxide) (PPO) and are shown to be very similar. However, the glass transition temperature of PPS decreases strongly for low molar masses, while for PPO it is almost independent of the molar mass down to 400 g/mol.

引用

页码：7530 / 7536

页数：7

共 25 条

[1] COMPARISON OF DIELECTRIC AND VISCOELASTIC PROPERTIES OF 2 POLY (PROPYLENEGLYCOL) LIQUIDS [J].