ANNEALED AND QUENCHED POLYELECTROLYTES

被引：148

作者：

RAPHAEL, E ^{[1
]}

JOANNY, JF ^{[1
]}

机构：

[1] INST CHARLES SADRON,F-67083 STRASBOURG,FRANCE

来源：

EUROPHYSICS LETTERS | 1990年 / 13卷 / 07期

关键词：

D O I：

10.1209/0295-5075/13/7/009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study theoretically the behaviour of two types of polyelectrolytes in a poor solvent. If the number of charges and their position along the chain is quenched, the collapse is well described by a blob model introduced by Khokhlov. Weak polyacids or polybases have however an annealed structure where the charges are mobile. along the chain. We show that these polymers undergo a discontinuous charge instability between a small-charge globular state and a high-charge extended state. This could explain several titration and viscometric data. At higher concentration, the electrostatic interaction is more screened for annealed than for quenched polyelectrolytes. © 1990 IOP Publishing Ltd.

引用

页码：623 / 628

页数：6

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