Shrinking of ultrathin polyelectrolyte multilayer capsules upon annealing:: A confocal laser scanning microscopy and scanning force microscopy study

被引：119

作者：

Leporatti, S ^{[1
]}

Gao, C

Voigt, A

Donath, E

Möhwald, H

机构：

[1] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany

[2] Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China

[3] Humboldt Univ, Fac Med Charite, Inst Transfus Med, D-10098 Berlin, Germany

来源：

EUROPEAN PHYSICAL JOURNAL E | 2001年 / 5卷 / 01期

关键词：

D O I：

10.1007/s101890170082

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Heating-induced morphological changes of micrometer size capsules prepared by step-wise deposition of oppositely charged polyelectrolytes onto melamine formaldehyde (MF) latex particles and biological cells with subsequent dissolution of the core have been investigation by confocal laser scanning microscopy (CLSM) and scanning force microscopy (SFM). For poly(styrenesulfonate-Na salt)/poly(allylamine hydrochloride) polyelectrolyte capsules a remarkable heating-induced shrinking is observed. An increase of the wall thickness corresponding to the capsule diameter decrease is found. The morphology of these microcapsules after temperature treatment is characterized. The thickening of the polyelectrolyte multilayer is interpreted in terms of a configurational entropy increase via polyanion-polycation bond rearrangement.

引用

页码：13 / 20

页数：8

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