A LIGHT-SCATTERING STUDY OF A MAIN CHAIN AROMATIC POLYESTER IN MIXED-SOLVENTS

被引：6

作者：

MACDONALD, WA

MCLENAGHAN, ADW

RICHARDS, RW

机构：

[1] ICI PLC,WILTON MAT RES CTR,MIDDLESBROUGH,CLEVELAND,ENGLAND

[2] UNIV STRATHCLYDE,DEPT PURE & APPL CHEM,GLASGOW G1 1XL,SCOTLAND

来源：

POLYMER | 1990年 / 31卷 / 04期

关键词：

dilute solution; light scattering; main chain aromatic polyester;

D O I：

10.1016/0032-3861(90)90290-F

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The dilute solution properties of a main chain aromatic polyester in a co-solvent mixture (trifluoroacetic acid/dichloromethane) have been investigated. Nine separate fractions in six co-solvent mixtures have been studied by differential refractometry and low angle laser light scattering. It has been shown that trifluoroacetic acid is preferentially adsorbed by the polymer. Light scattering data indicates that the polymer has a random coil configuration in solution and values for the polymer-solvent interaction parameter have been extracted. From the data we have obtained ( 〈r2〉0 M) 1 2 = 7.72 × 10-9 cm. This ratio is discussed with reference to other values for aromatic polyesters. © 1990.

引用

页码：684 / 692

页数：9

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