Premium
The synthesis and gas‐transport properties of some hydrosilylation condensation polymers
Author(s) -
Rickle Greg K.
Publication year - 1994
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.1994.070510403
Subject(s) - hydrosilylation , polymer , condensation polymer , polymer chemistry , materials science , oxygen permeability , permeance , chemical engineering , benzene , condensation , elastomer , silanes , permeability (electromagnetism) , membrane , oxygen , polymer science , chemistry , composite material , organic chemistry , silane , thermodynamics , catalysis , permeation , biochemistry , physics , engineering
High‐permeance collection layers are needed in composite membranes but few polymers have the required permeability. Hydrosilylation condensation polymers, because of their high silicon content, were thought to be good candidates to have high permeabilities. Several novel polymers were made and a new and simpler synthesis of ethynylated silanes is reported. One polymer, poly(divinyldimethylsilane‐ co ‐1,4‐bis [dimethylsilyl] benzene), appears to be of a liquid crystalline nature and has a low oxygen permeability (1.10 barrers). Two others [poly(diethynyldimethylsilane‐ co ‐1,4‐bis) [dimethylsilyl] benzene and poly(divinyldimethylsilane‐ co ‐ p ,p′diethynylbiphenyl‐ co ‐tetramethyldisiloxane)] were viscous liquids that could be thermally cured to give elastomers with oxygen permeabilities of ˜ 85 barrers. © 1994 John Wiley & Sons, Inc.