DIFFUSION IN BIMODAL AND POLYDISPERSE POLYMER SYSTEMS .2. FULLY PROTONATED BIMODAL AND POLYDISPERSE POLYMER-SOLUTIONS

被引：6

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; POLYDISPERSE POLYMER SOLUTION; PULSED-FIELD GRADIENT NMR;

D O I：

10.1016/0032-3861(95)99434-V

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 second of two papers studying diffusion in bimodal and polydisperse polymer solutions, the average self-diffusion coefficient of two polydisperse polystyrene samples has been measured as a function of concentration by the pulsed-field gradient nuclear magnetic resonance technique. Utilizing the concepts introduced in the previous paper, estimates of the molecular-weight distribution obtained from these self-diffusion coefficients show reasonable agreement with values obtained from gel permeation chromatography. Simple model systems reinforce the validity of this approach.

引用

页码：3343 / 3347

页数：5

共 10 条

[1] THE CRITICAL OVERLAP CONCENTRATION MEASURED BY PULSED-FIELD GRADIENT NUCLEAR-MAGNETIC-RESONANCE TECHNIQUES [J].