HOW GOOD IS THE BEAD-SPRING MODEL

被引：3

作者：

AMELAR, S ^{[1
]}

EASTMAN, CE ^{[1
]}

LODGE, TP ^{[1
]}

VONMEERWALL, ED ^{[1
]}

机构：

[1] UNIV AKRON,DEPT PHYS,AKRON,OH 44325

来源：

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

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0022-3093(91)90647-O

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 predictions of the bead-spring model are compared with the infinite dilution dynamic properties of polystyrene in Aroclor 1248, as a function of molecular weight. The experimentally determined quantities include the longest relaxation time and the relaxation-time spectrum, obtained via oscillatory flow birefringence; the diffusion coefficient, measured by NMR and forced Rayleigh scattering; the radius of gyration, determined by small-angle neutron scattering; and the intrinsic viscosity. In all cases, the data are very well described by the model, using a consistent set of three parameters. However, the conformational dynamics experiments suggest a surprisingly sharp end to the relaxation spectrum, corresponding to the relaxation time for an approximately 50-monomer subchain.

引用

页码：551 / 555

页数：5

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