A RADIOTRACER TECHNIQUE FOR MEASURING SOLUTE DIFFUSION WITH ZERO CONCENTRATION GRADIENT - DIFFUSION OF BENZOIC-ACID THROUGH POLYETHYLENE FILM

被引：2

作者：

BARSON, CA ^{[1
]}

BURT, GM ^{[1
]}

ILLSLEY, DR ^{[1
]}

LEHRLE, RS ^{[1
]}

机构：

[1] UNIV BIRMINGHAM,DEPT CHEM,POB 363,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

来源：

EUROPEAN POLYMER JOURNAL | 1989年 / 25卷 / 02期

关键词：

Acids--Diffusion - Diffusion--Measurements - Radioactive Materials--Tracers - Solutions--Applications;

D O I：

10.1016/0014-3057(89)90065-7

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A simple glass apparatus has been designed to allow the study of solute diffusion under conditions of zero concentration gradient. Solutions of equal concentration of the solute, one containing the solute in radiolabelled form, are separated by a polymer membrane, and the diffusion of radionuclide is monitored. The system studied involves solutions of benzoic acid in toluene, separated by polyethylene film. The results show that the benzoic acid diffuses through the polymer film in monomeric form, despite the fact that it is almost 100% dimerized in the solution phase.

引用

页码：141 / 143

页数：3