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Porous polydimethylsiloxane membranes treated with aminopropyltrimethoxysilane

✍ Scribed by Takaomi Kobayashi; Hitoshi Saitoh; Nobuyuki Fujii

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
973 KB
Volume
51
Category
Article
ISSN
0021-8995

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✦ Synopsis

Polydimethylsiloxane ( PDMS ) membranes were made by catalytic hydrosilylation of a siloxane compound having a vinyl group and an SiH group in the presence of 1,4-dioxane. By washing it with water many pores were formed in the membrane. Then, the pore size of the membrane was controlled by treatment of aminopropyltrimethoxysilane ( APTMS ) solution. When increasing the APTMS concentration, the pore size of the membrane was reduced by the formation of APTMS oligomer on the surface of the membrane. The characteristics of the membrane was examined by IR, ATR-IR, and SEM techniques. Also, the permeation properties of dextrans and polystyrene latexes through the treated membrane were examined by the ultrafiltration method.

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