BEHAVIOR OF POLY(BETA-HYDROXYBUTYRIC ACID) IN DILUTE-SOLUTION

被引：7
|
作者：
HUGLIN, MB
RADWAN, MA
机构：
[1] Department of Chemistry & Applied Chemistry, University of Salford, Salford
来源：
POLYMER INTERNATIONAL | 1991年 / 24卷 / 02期
关键词：
POLY(BETA-HYDROXYBUTYRIC ACID); 2,2,2-TRIFLUOROETHANOL; LIGHT SCATTERING; RADIUS OF GYRATION; REFRACTIVE INDEX; INTRINSIC VISCOSITY; LIGHT-SCATTERING; PHYSICAL PROPERTIES; POLY(D-BETA-HYDROXYBUTYRATE); BUTYRATE);
D O I：
10.1002/pi.4990240210
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 refractive indices of poly(beta-hydroxybutyric acid) (PHB) at four wavelengths have been determined via different procedures. Viscometric and light scattering measurements have been made on solutions of eight samples of PHB (M(w) = 20.9 x 10(3)-929 x 10(3) g mol-1) in 2,2,2-trifuoroethanol. From the dependences of intrinsic viscosity and of radius of gyration on molar mass, the conformation of PHB in dilute solution is shown to be that of a random coil. The findings are discussed in relation to existing conflicting evidence on the conformation of this polymer.
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页码：119 / 123
页数：5
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