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A study on the preparation and performance of polydimethylsiloxane‐coated polyetherimide membranes in pervaporation
Author(s) -
Bai J.,
Founda A. E.,
Matsuura T.,
Hazlett J. D.
Publication year - 1993
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1993.070480607
Subject(s) - polyetherimide , silicone rubber , pervaporation , membrane , materials science , polydimethylsiloxane , coating , silicone , chemical engineering , acetic acid , composite material , composite number , organic chemistry , chemistry , permeation , polymer , biochemistry , engineering
Separation of acetic acid/water mixtures by pervaporation was attempted by silicone rubbercoated polyetherimide membranes. In particular, the effect of the pore size of the polyetherimide membrane and the condition of silicone rubber coating on the performance of the composite membrane was investigated. It was found that the composite membrane could become either water selective or acetic acid selective, depending on the pore size of the support membrane and the condition of the silicone rubber coating. Thus, the overall performance of the composite membrane can be governed, either by the top coated layer or by the bottom support layer.