COLLAPSE-STRETCHING TRANSITION FOR POLYMER BRUSHES - PREFERENTIAL SOLVATION

被引：91

作者：

AUROY, P

AUVRAY, L

机构：

[1] Laboratoire Léon Brillouin, CEA-CNRS, CEN Saclay, 91191 Cedex, Gif Sur Yvette

来源：

MACROMOLECULES | 1992年 / 25卷 / 16期

关键词：

D O I：

10.1021/ma00042a014

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 have investigated by small-angle neutron scattering techniques the collapse-stretching transition of grafted poly(dimethylsiloxane) chains. Two ways have been used for inducing this transition: modifying the chemical composition in a binary mixture or changing the temperature in a given solvent around the theta-point. The first method reveals a spectacular preferential solvation effect, provided that the grafting density is high enough. The second method is more graduate: the thickness of the interface is a linear function of temperature in the range we have investigated.

引用

页码：4134 / 4141

页数：8

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