CHARACTERIZATION OF LONG-CHAIN BRANCHING IN POLY(VINYLACETATE) - COMPARISON OF 2 METHODS

被引：11

作者：

DIETZ, R

FRANCIS, MA

机构：

[1] Division of Chemical Standards, National Physical Laboratory, Teddington

来源：

POLYMER | 1979年 / 20卷 / 04期

关键词：

D O I：

10.1016/0032-3861(79)90069-7

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 commercial sample of poly(vinylacetate) was fractionated by preparative gel permeation chromatography. Molar masses and branching parameters measured by supplementing analytical gel permeation chromatography with viscometry and with ultracentrifugation were in good agreement. No serious errors were introduced by neglecting the difference between the expansions of branched and linear molecules in a good solvent. © 1979.

引用

页码：450 / 454

页数：5

共 35 条

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