Gas transport properties of tetramethyl polysulfones containing trimethylsilyl group side substituents

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EditorSearch for: Pinneau, Ingo; Search for: Freeman, Benny D.
Proceedings titleAdvanced Materials for Membrane Separations
Series titleACS Symposium Series; Volume 876
ConferenceAmerican Chemical Society Symposium on Advanced Materials for Membrane Separations, 222nd ACS National Meeting : Chicago, IL, August 26-30, 2001
Pages154166; # of pages: 15
SubjectPolysulfone; trimethylsilyl (TMS); gas transport property; bromination methodology; lithiation methodology; ortho-sulfone TMS
AbstractPolysulfones with rigid chain structures and trimethylsilyl (TMS) substituents were prepared as potential membrane materials having enhanced gas transport properties. Tetramethyl polysulfones were modified by bromination and lithiation methodology to introduce high levels of TMS groups. Direct lithiation resulted exclusively in ortho-sulfone TMS. Bromination followed by excess lithiation resulted in a high degree of substitution (DS) of TMS on both the bisphenol and phenylsulfone rings. Polymers with a high DS of TMS had high CO₂ and O₂ permeabilities and good permselectivities from N₂. Permeabilities were correlated with d-spacing and specific volume.
Publication date
PublisherAmerican Chemical Society
Copyright noticeMaterial in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission.
AffiliationNational Research Council Canada; NRC Institute for Chemical Process and Environmental Technology
Access conditionavailable
Peer reviewedYes
NRC number44385
NPARC number12328671
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Record identifiereead2243-d3f1-411e-a13c-4d475d9d9c1c
Record created2009-09-10
Record modified2016-05-09
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