TRANSPORT IN INTERMEDIATE AND HIGH-MOLECULAR-WEIGHT HYDROXYPROPYLCELLULOSE WATER SOLUTIONS

被引：48

作者：

PHILLIES, GDJ ^{[1
]}

RICHARDSON, C ^{[1
]}

QUINLAN, CA ^{[1
]}

REN, SZ ^{[1
]}

机构：

[1] UNIV S DAKOTA, DEPT PHYS, VERMILLION, SD 57069 USA

来源：

MACROMOLECULES | 1993年 / 26卷 / 25期

关键词：

D O I：

10.1021/ma00077a022

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We obtained the shear viscosity eta and optical probe (67-nm polystyrene latex spheres) diffusion coefficient D in hydroxypropylcellulose (HPC)/water at temperatures T = 10, 25, and 39-degrees-C. Polymer samples had weight-average molar masses M of 139, 146, 415, and 1280 kDa. Polymer concentrations c ranged up to 40-100 g/L; eta was as large as 10(3)-10(6) cP in different systems. Eta has a stretched-experimental dependence on c at small c and power-law behavior at large c. D generally follows a stretched exponential D0 exp(-alphac(nu)) but is consistent with power-law behavior at large c. Individual spectra fit well to Williams-Watts forms A0 exp(-thetat(beta)). The dependence of alpha, nu, theta, and beta on c, M, and T is discussed.

引用

页码：6849 / 6858

页数：10

共 48 条

[1] APPLICATION OF RANDOM PHASE APPROXIMATION TO THE DYNAMICS OF POLYMER BLENDS AND COPOLYMERS [J].