Reversible pH-dependent properties of multilayer microcapsules made of weak polyelectrolytes

被引：178

作者：

Mauser, T ^{[1
]}

Déjugnat, C ^{[1
]}

Sukhorukov, GB ^{[1
]}

机构：

[1] Max Planck Inst Colloids & Interfaces, D-14476 Golm, Germany

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2004年 / 25卷 / 20期

关键词：

crosslinking; layer-by-layer; PH sensitivity; stimuli-responsive; swelling;

D O I：

10.1002/marc.200400331

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 investigated microcapsules composed of the weak polyelectrolytes poly(allylamine hydrochloride) (PAH) and poly(methacrylic acid) (PMA) assembled on calcium carbonate cores. These capsules are stable in the PH range from 2.5 to 11.5, undergoing reversible swelling in the PH interval from 2.7 to 2.6. Capsule swelling occurs at a protonation degree above 90%. The pH-dependent size variation of PAW PMA capsules is blocked after crosslinking of the polyelectrolyte layers.

引用

页码：1781 / 1785

页数：5

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