THE EFFECT OF HYDROSTATIC-PRESSURE ON LOCAL POLYMER DYNAMICS IN POLYISOPRENE

被引：7

作者：

FREEMAN, BD ^{[1
]}

BOKOBZA, L ^{[1
]}

MONNERIE, L ^{[1
]}

机构：

[1] ECOLE SUPER PHYS & CHIM IND,PHYSICOCHIM STRUCT & MACROMOLEC LAB,10 RUE VAUQUELIN,F-75231 PARIS 05,FRANCE

来源：

POLYMER | 1990年 / 31卷 / 06期

关键词：

dynamics; hydrostatic pressure effects; molecular motion; polyisoprene;

D O I：

10.1016/0032-3861(90)90251-S

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effect of hydrostatic pressure on the local molecular motion in bulk polyisoprene (Mw = 1.4 × 106) has been studied by measuring the pressure dependence of the fluorescence lifetime of the intramolecular excimer-forming probe molecule, meso-2,4-di(N-carbazolyl)pentane, dissolved in the polymer. The experiments were performed at 323K and covered a pressure range of 1 to 3000 bar. The results are compared with previous mechanical spectroscopy and excimer-based measurements of polymer dynamics. The range of frequency of polymer motion probed in these experiments was insufficient to discriminate between several empirical models of the pressure dependence of polymer dynamics. © 1990.

引用

页码：1045 / 1050

页数：6

共 28 条

[1] INTERMOLECULAR FORCES AND CHAIN FLEXIBILITIES IN POLYMERS .2. INTERNAL PRESSURES OF POLYMERS [J].