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
收藏
页码：1045 / 1067
页数：23
相关论文
共 34 条
  • [1] [Anonymous], 1989, FOKKERPLANCK EQUATIO
  • [2] FLUCTUATION EFFECTS IN A SYMMETRIC DIBLOCK COPOLYMER NEAR THE ORDER-DISORDER TRANSITION
    BATES, FS
    ROSEDALE, JH
    FREDRICKSON, GH
    [J]. JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (10) : 6255 - 6270
  • [3] BLOCK COPOLYMER THERMODYNAMICS - THEORY AND EXPERIMENT
    BATES, FS
    FREDRICKSON, GH
    [J]. ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 1990, 41 (01) : 525 - 557
  • [4] BRAZOVSKII SA, 1975, ZH EKSP TEOR FIZ, V41, P85
  • [5] LANDAU THEORY OF THE NEMATIC SMECTIC-A PHASE-TRANSITION UNDER SHEAR-FLOW
    BRUINSMA, RF
    SAFINYA, CR
    [J]. PHYSICAL REVIEW A, 1991, 43 (10): : 5377 - 5404
  • [6] ROLE OF SHEAR IN THE ISOTROPIC-TO-LAMELLAR TRANSITION
    CATES, ME
    MILNER, ST
    [J]. PHYSICAL REVIEW LETTERS, 1989, 62 (16) : 1856 - 1859
  • [7] DOI M, 1991, J CHEM PHYS, V95, P1242, DOI 10.1063/1.461156
  • [8] Doi M., 1986, THEORY POLYM DYNAMIC
  • [9] FOLKES MJ, 1985, PROCESSING STRUCTURE
  • [10] Forster D, 1995, HYDRODYNAMIC FLUCTUA
1234