Plastic behaviour of polyelectrolyte microcapsules derived from colloid templates

被引：0
|
作者：
Bäumler, H
Artmann, G
Voigt, A
Mitlöhner, R
Neu, B
Kiesewetter, H
机构：
[1] Humboldt Univ, Fac Med Charite, Inst Transfus Med, D-10098 Berlin, Germany
[2] TFH Aachen, Dept Appl Biophys, D-52428 Julich, Germany
[3] Max Planck Inst Colloids & Interfaces, D-14746 Potsdam, Germany
[4] Univ So Calif, Dept Physiol & Biophys, Los Angeles, CA 90089 USA
来源：
JOURNAL OF MICROENCAPSULATION | 2000年 / 17卷 / 05期
关键词：
deformability; microcapsules; micropipette; polyelectrolytes;
D O I：
10.1080/026520400417694
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The deformability and osmotic properties of hollow microcapsules were studied by means of the micropipette video microscopic technique. The microcapsules were prepared by consecutive multiple adsorption of the polyanion, poly (styrene sulphonate), and the polycation, poly( allylamine hydrochloride), onto melamine formaldehyde resin latex of 5 mu m diameter, which was decomposed after completing the coating by transferring to hydrochloric acid of pH 1.1. The polyelectrolyte microcapsules reacted to micropipette suction with plastic deformation. If lipids are added to the polyelectrolyte layers, the capsules cannot be visibly deformed by micropipette suction up to 10(4) N/m(2). However, plastic shrinking was observed if the stress was generated by the osmotic pressure of a sucrose solution of 10(6) N/m(2).
引用
收藏
页码：651 / 655
页数：5
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