TIME DEPENDENCE OF VISCOSITY OF DILUTE POLYISOBUTYLENE SOLUTIONS

被引：12

作者：

BIANCHI, U

PETERLIN, A

机构：

[1] Camille Dreyfus Laboratory Research Triangle Institute, Research Triangle Park, N.C.

来源：

KOLLOID-ZEITSCHRIFT AND ZEITSCHRIFT FUR POLYMERE | 1969年 / 232卷 / 02期

关键词：

D O I：

10.1007/BF01500649

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Shearing at constant gradient of polyisobutylene (PIB) solutions in viscous polybutene oils results in time dependent changes of their viscosities. Two PIB fractions (M=8·106 and 3.8·106) have been studied in a variety of solvents, covering the viscosity range from 5 to 0.5·10-2 poise. The overall phenomenon is similar to that already observed for polymethylmethacrylate, polystyrene, and polyethylene oxide solutions in Aroclor. Results have been discussed in terms of polymer molecular weight and concentration, solvent viscosity and gradient. The systems investigated are free from strong polar interactions and tendency toward molecular aggregation; time dependent changes of viscosity are therefore observable also for true molecularly dispersed solutions. © 1969 Dr. Dietrich Steinkopff Verlag.

引用

页码：749 / &

共 11 条

[1] UPTURN EFFECT IN NON-NEWTONIAN INTRINSIC VISCOSITY OF POLYMER SOLUTIONS .2. POLYISOBUTYLENE IN POLYBUTENE OIL [J].