Synthesis of poly(p-phenyleneethynylene)s bearing oligo-ethylene glycols and their gas permeation properties

被引：0
|
作者：
Toshikazu Sakaguchi
Kota Sanada
Tamotsu Hashimoto
机构：
[1] University of Fukui,Department of Materials Science and Engineering, Graduate School of Engineering
来源：
Polymer Bulletin | 2011年 / 67卷
关键词：
Poly(; -phenyleneethynylene); Ethylene glycol; Membrane; Fractional free volume; Gas permeability; Carbon dioxide;
D O I：
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学科分类号：
摘要：
1,4-Diiodobenzenes bearing oligo-ethylene glycols [IRC6H2IR, R = OCH2CH2OCH3 (1a), O(CH2CH2O)2CH3 (1b), O(CH2CH2O)3CH3 (1c)] were polymerized with 1,4-diethynylbenzene in the presence of Pd/Cu catalyst to afford poly(p-phenyleneethynylene)s bearing oligo-ethylene glycols (2a–c), respectively. Polymer 2a was insoluble in any solvents, but the other polymers (2b, 2c) were soluble in CHCl3. The weight-average molecular weights of 2b and 2c were 5.4 × 104 and 9.6 × 104, respectively, and they gave free-standing membranes by solution-casting method. The densities of membranes of 2b and 2c were 1.26 and 1.22 g/cm3, respectively, and their carbon dioxide permeability coefficients were 12.9 and 13.5 barrers, respectively. The CO2/N2 separation factor of membrane of 2b was as large as 33.7. Membrane of 3b, which contains triethylene glycols, exhibited higher CO2 permselectivity, and the CO2/N2 separation factor was 50.0.
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页码：583 / 592
页数：9
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