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Accessing Siloxane Functionalized Polynorbornenes via Vinyl-Addition Polymerization for CO 2 Separation Membranes.
- Source :
-
ACS macro letters [ACS Macro Lett] 2016 Jul 19; Vol. 5 (7), pp. 879-883. Date of Electronic Publication: 2016 Jul 06. - Publication Year :
- 2016
-
Abstract
- The vinyl addition polymerization of norbornyl-based monomers bearing polar functional groups is often problematic, leading to low molecular weight polymers in poor yield. Herein, we provide proof-of-principle evidence that addition-type homopolymers of siloxane substituted norbornyl-based monomers may be readily synthesized using the catalyst trans -[Ni(C <subscript>6</subscript> F <subscript>5</subscript> ) <subscript>2</subscript> (SbPh <subscript>3</subscript> ) <subscript>2</subscript> ]. Polymerizations using this catalyst reached moderate to high conversion in just 5 min of polymerization and produced siloxane-substituted polymers with molecular weights exceeding 100 kg/mol. These polymers showed excellent thermal stability ( T <subscript>d</subscript> ≥ 362 °C) and were cast into membranes that displayed high CO <subscript>2</subscript> permeability and enhanced CO <subscript>2</subscript> /N <subscript>2</subscript> selectivity as compared to related materials.
Details
- Language :
- English
- ISSN :
- 2161-1653
- Volume :
- 5
- Issue :
- 7
- Database :
- MEDLINE
- Journal :
- ACS macro letters
- Publication Type :
- Academic Journal
- Accession number :
- 35614763
- Full Text :
- https://doi.org/10.1021/acsmacrolett.6b00435