Addition-type poly(norbornene)s with siloxane substituents: synthesis, properties and nanoporous membrane

Addition-type poly(norbornene)s with siloxane substituents: synthesis, properties and nanoporous membrane

Addition-type poly(norbornene)s with siloxane substituents were synthesized using the (η 3 -Allyl)(η 5 -cyclopentadienyl)palladium/tricyclohexylphosphine/[Ph 3 C][B(C 6 F 5 ) 4 ] system. The obtained polymers had very high glass transition temperature of up to 255 °C, and their films displayed high...

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Veröffentlicht in:Polymer journal 2011-01, Vol.43 (1), p.97-100
Hauptverfasser: Tetsuka, Hiroaki, Hagiwara, Mamoru, Kaita, Shojiro
Format: Artikel
Sprache:eng
Schlagworte:
639/638/455/303
639/638/455/941
639/638/455/959
639/925/350/2093
Applied sciences
Biomaterials
Bioorganic Chemistry
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Copolymerization
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymer Sciences
Polymerization
Preparation, kinetics, thermodynamics, mechanism and catalysts
Surfaces and Interfaces
Thin Films
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Zusammenfassung:Addition-type poly(norbornene)s with siloxane substituents were synthesized using the (η 3 -Allyl)(η 5 -cyclopentadienyl)palladium/tricyclohexylphosphine/[Ph 3 C][B(C 6 F 5 ) 4 ] system. The obtained polymers had very high glass transition temperature of up to 255 °C, and their films displayed high mechanical flexibility. The incorporation of siloxane groups in the chain resulted in significant increase in the gas permeability of their films, and the polymers with branched siloxane groups showed high oxygen permeability ( P (O 2 )=66–360 Barrer). In addition, poly(norbornene) membranes with a unique porous structure were prepared.
ISSN:0032-3896
1349-0540
DOI:10.1038/pj.2010.99