DIFFUSION IN BIMODAL AND POLYDISPERSE POLYMER SYSTEMS .1. BIMODAL SOLUTIONS OF PROTONATED AND DEUTERATED POLYMERS

被引：14

作者：

COSGROVE, T ^{[1
]}

GRIFFITHS, PC ^{[1
]}

机构：

[1] UNIV BRISTOL,SCH CHEM,BRISTOL BS8 1TS,AVON,ENGLAND

来源：

POLYMER | 1995年 / 36卷 / 17期

关键词：

DIFFUSION; BIMODAL POLYMER SOLUTION; PULSED-FIELD GRADIENT NMR;

D O I：

10.1016/0032-3861(95)99433-U

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In the first of two papers studying diffusion in bimodal and polydisperse polymer solutions, the self-diffusion coefficients of various protonated polymers in a series of bimodal solutions containing deuterated polymers have been measured. Utilizing the chemical specificity of the pulsed-field gradient nuclear magnetic resonance (p.f.g.n.m.r.) technique, it was possible to study the effects of both molecular weight and concentration of each component. A simple friction dependence was shown to account for the observed trends. The p.f.g.n.m.r. results are contrasted with mutual diffusion coefficient measurements, obtained from multi-tau photon correlation spectroscopy on similar bimodal systems.

引用

页码：3335 / 3342

页数：8

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