DENSITY PROFILE OF POLYELECTROLYTE BRUSHES

被引：125

作者：

MIR, Y ^{[1
]}

AUROY, P ^{[1
]}

AUVRAY, L ^{[1
]}

机构：

[1] INST CURIE, CNRS, URA 448, RECH SECT, F-75231 PARIS 05, FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.75.2863

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using small angle neutron scattering techniques, we have determined the interfacial density profile of polyelectrolyte brushes. We show that in pure water the density profile has a Gaussian shape whose characteristic length appears to be a decreasing function of the grafting density. Upon the addition of salt, the layers shrink but never collapse. Even at very high ionic strength, the chains remain stretched and the density profile is eventually parabolic.

引用

页码：2863 / 2866

页数：4

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