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Polymer Membranes with Two-Dimensionally Arranged Pores Derived from Monolayers of Silica Particles
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Abstract
This paper describes a simple method to prepare porous polymer membranes with closely packed two-dimensionally arranged pores ranging from approximately 20 to 1000 nm diameter. Mixtures of hydrophobized silica colloids and a polymerizable organic liquid, trimethylolpropane trimethacrylate (TMPTMA), were spread onto the surface of water-filled containers to form a wetting layer, in which two-dimensionally closed packed silica particles are embedded in a layer of the organic liquid in such a way that they penetrate through both the upper and lower interfaces. Photochemical cross-linking of the organic monomer and subsequent removal of the colloids give rise to a polymer membrane with pores of uniform size. The crucial factor of this method is to spread exactly the amount of silica particles necessary for the formation of a closely packed two-dimensional monolayer.
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This article has been cited by 7 ACS Journal articles (5 most recent appear below).
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Maxim Orlov, Ihor Tokarev, Andreas Scholl, Andrew Doran, and Sergiy MinkoMacromolecules2007 40 (6), 2086-2091We report the fabrication of microporous thin film membranes with two-dimensionally arranged submicron pores whose size can be varied by changing pH of aqueous medium. A solution containing poly(2-vinylpyridine) partially quaternized with 1,4-diiodobutane ...
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History
- Published In Issue May 04, 2004
- Received October 21, 2003
Revised Manuscript Received January 16, 2004
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