PHASE-SEPARATION IN A GRAFTED POLYMER LAYER

被引：145

作者：

MARKO, JF

WITTEN, TA

机构：

[1] The James Franck Institute, The University of Chicago, Chicago, IL 60637

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.66.1541

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We examine equilibrium phase separation in a grafted polymer layer composed of mutually immiscible chains. Under symmetric melt conditions, we predict that there is a transition to a "rippled" phase-a density wave in composition running along the surface. This transition is expected for a molecular weight 2.27 times that for the same species in a simple blend at its demixing threshold. The ripple wavelength is 1.97 times the chain rms end-to-end distance. The lateral rippling is accompanied by a composition oscillation with depth.

引用

页码：1541 / 1544

页数：4

共 17 条

[1] ADSORPTION OF CHAIN MOLECULES WITH A POLAR HEAD A-SCALING DESCRIPTION [J].