CHARACTERIZATION OF BENZENE AS A SOLVENT FOR POLY(2-VINYLPYRIDINE)

被引：3

作者：

SEERY, TAP ^{[1
]}

AMIS, EJ ^{[1
]}

机构：

[1] UNIV SO CALIF,DEPT CHEM,LOS ANGELES,CA 90089

来源：

MACROMOLECULES | 1991年 / 24卷 / 19期

关键词：

D O I：

10.1021/ma00019a038

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Static and dynamic light scattering and intrinsic viscosity measurements have been performed on dilute solutions of poly(2-vinylpyridine) in benzene. Several workers have reported a THETA-point for this system in the range of 11-16-degrees-C as determined by intrinsic viscosity and virial coefficient measurements. In our laboratory, samples prepared with spectral grade benzene "as received" exhibited an apparent THETA-point near 18-degrees-C by virial coefficient and cloud point measurements. Samples which were extensively dried to remove traces of water exhibited good-solvent properties. For these samples second virial coefficients range from 1.1 x 10(-4) to 2.0 x 10(-4) cm3 mol g-2 over the range 2.5-25-degrees-C, and the Houwink-Mark-Sakurada molecular weight exponent for intrinsic viscosity was 0.58 at 11.40-degrees-C, the lowest of the reported THETA-temperatures.

引用

页码：5463 / 5467

页数：5