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Preparation and gas permeability of polymer blend membranes of polystyrene and poly[1,1,1‐tris(trimethylsiloxy)methacrylate propylsilane]
Author(s) -
Kang Y.,
Araki K.,
Iwamoto K.,
Senō M.
Publication year - 1982
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.1982.070270615
Subject(s) - copolymer , membrane , polymer , materials science , polystyrene , polymer chemistry , polymer blend , methacrylate , methyl methacrylate , chemical engineering , permeability (electromagnetism) , composite material , chemistry , biochemistry , engineering
The gas permeability of O 2 and CO 2 was sutidied for various polymer blend membranes of polystyrene (PSt) and poly[1,1,1‐tris(trimethylsiloxy)methacrylate propylsilane (PTMPS). In order to improve the compatibility of these polymer blends, the effect of addition of the graft copolymer was also investigated. The gas permeability of various composition polymer‐blend membranes increases rapidly with an increasing content of PTMPS in the polymer blend. In the polymer blend membranes containing the graft copolymer, the gas permeability decreases with an increase in the graft copolymer content and then reaches a nearly constant value, when the PTMPS content remains constant. This result is attributed to a decrease in interstices at phase boundaries, owing to improvement in compatibility of the component polymers. This method of membrane preparation is very useful for making membranes with required properties.