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Formation of Regular Hole Pattern in Polymer Films

✍ Scribed by Juan Peng; Yanchun Han; Jun Fu; Yuming Yang; Binyao Li

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
203 KB
Volume
204
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Ordered macroporous materials recently have attracted much attention. A method that utilizes the condensation of monodisperse water droplets on a polymer solution is proposed for the preparation of honeycomb microporous films. Our results show that it is a general method that can be used for patterning a wide range of polymers. The presence of water vapor and polymer is necessary for the formation of regular holes in films. The formation of hexagonal packing instead of other kinds of packing takes place because the hexagonal packing has the lowest free energy. The formation mechanisms of regular hole pattern and imperfections in the hexagonal packing are proposed.

Hexagonal hole structures in a PMMA film.

magnified imageHexagonal hole structures in a PMMA film.

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