Gas Permeability of Star-Shaped Diblock Copoly(vinyl ether)s with Oxyethylene Side Chains

Star-shaped diblock copolymers consisting of poly(2-adamantyl vinyl ether) [poly(2-AdVE)] as outer hard segments and poly[2-(2-methoxyethoxy)ethyl vinyl ether] [poly(MOEOVE)] having polar oxyethylene side chains as inner soft segments were synthesized by sequential living cationic polymerization. Th...

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Published inKOBUNSHI RONBUNSHU Vol. 73; no. 3; pp. 333 - 336
Main Authors OKUNAGA, Ryoki, HASHIMOTO, Tamotsu, URUSHISAKI, Michio, SAKAGUCHI, Toshikazu
Format Journal Article
LanguageJapanese
Published The Society of Polymer Science, Japan 01.01.2016
Subjects
Carbon Dioxide
Gas Permeability
Living Cationic Polymerization
Oxyethylene Chain
Star-Shaped Block Copolymer
Vinyl Ether
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Summary:Star-shaped diblock copolymers consisting of poly(2-adamantyl vinyl ether) [poly(2-AdVE)] as outer hard segments and poly[2-(2-methoxyethoxy)ethyl vinyl ether] [poly(MOEOVE)] having polar oxyethylene side chains as inner soft segments were synthesized by sequential living cationic polymerization. The star-shaped diblock copolymer, star-poly(2-AdVE)300-b-poly(MOEOVE)700-core, exhibited a tensile strength (TB) of 5.13 MPa and an elongation at break (EB) of 340%. The gas permeability coefficients of carbon dioxide (PCO2) and the CO2 and N2 separation ratio (PCO2/PN2) of the star-poly(2-AdVE)300-b-poly(MOEOVE)700-core were 219 barrer and 40.1, respectively. Thus, the star-poly(2-AdVE)300-b-poly(MOEOVE)700-core is a thermoplastic elastomer with excellent CO2 separation and good mechanical properties.
ISSN:0386-2186
1881-5685
DOI:10.1295/koron.2016-0011