STEADY SHEAR ALIGNMENT OF BLOCK-COPOLYMERS NEAR THE ISOTROPIC LAMELLAR TRANSITION

被引：157

作者：

FREDERICKSON, GH

机构：

[1] Department of Chemical Engineering and Materials, University of California, Santa Barbara

来源：

JOURNAL OF RHEOLOGY | 1994年 / 38卷 / 04期

关键词：

D O I：

10.1122/1.550584

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A theory is presented to describe the orientational dynamics of block copolymer lamellar phases subjected to steady shear flow. By modifying an earlier theory by Cates and Milner to incorporate different viscosities of the pure block components, as well as restoring some neglected couplings between the mean composition pattern and composition fluctuations about the mean, it is demonstrated that the qualitative features of experimental observations on sheared poly(ethylene-propylene)-poly(ethylethylene) diblock copolymer melts can be reproduced. The theory may also be applicable to certain lyotropic lamellar phases assembled from nonpolymeric surfactants.

引用

页码：1045 / 1067

页数：23

共 34 条

[1]

[Anonymous], 1989, FOKKERPLANCK EQUATIO

[2] FLUCTUATION EFFECTS IN A SYMMETRIC DIBLOCK COPOLYMER NEAR THE ORDER-DISORDER TRANSITION [J].