Accessing Siloxane Functionalized Polynorbornenes via Vinyl-Addition Polymerization for CO2 Separation Membranes

Kevin R. Gmernicki; Eunice Hong; Christopher R. Maroon; Shannon M. Mahurin; Alexei P. Sokolov; Tomonori Saito; Brian K. Long

doi:10.1021/acsmacrolett.6b00435

Accessing Siloxane Functionalized Polynorbornenes via Vinyl-Addition Polymerization for CO₂ Separation Membranes

Kevin R. Gmernicki, Eunice Hong, Christopher R. Maroon, Shannon M. Mahurin, Alexei P. Sokolov, Tomonori Saito, Brian K. Long

University of Tennessee, Knoxville

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

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(C₆F₅)₂(SbPh₃)₂]. 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_d ≥ 362 °C) and were cast into membranes that displayed high CO₂ permeability and enhanced CO₂/N₂ selectivity as compared to related materials.

Original language	English
Pages (from-to)	879-883
Number of pages	5
Journal	ACS Macro Letters
Volume	5
Issue number	7
DOIs	https://doi.org/10.1021/acsmacrolett.6b00435
State	Published - Jul 19 2016

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

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Cite this

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title = "Accessing Siloxane Functionalized Polynorbornenes via Vinyl-Addition Polymerization for CO2 Separation Membranes",

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(C6F5)2(SbPh3)2]. 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 (Td ≥ 362 °C) and were cast into membranes that displayed high CO2 permeability and enhanced CO2/N2 selectivity as compared to related materials.",

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AU - Gmernicki, Kevin R.

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AU - Mahurin, Shannon M.

AU - Sokolov, Alexei P.

AU - Saito, Tomonori

AU - Long, Brian K.

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AB - 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(C6F5)2(SbPh3)2]. 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 (Td ≥ 362 °C) and were cast into membranes that displayed high CO2 permeability and enhanced CO2/N2 selectivity as compared to related materials.

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