Influence of TRIS-based co-monomer on structure and gas transport properties of cross-linked poly(ethylene oxide)

被引：30

作者：

Kusuma, Victor A. ^{[1
]}

Freeman, Benny D. ^{[1
]}

Smith, Stephan L. ^{[2
]}

Heilman, Alexander L. ^{[2
]}

Kalika, Douglass S. ^{[2
]}

机构：

[1] Univ Texas Austin, Dept Chem Engn, Ctr Energy & Environm Resources, Austin, TX 78758 USA

[2] Univ Kentucky, Dept Chem & Mat Engn, Lexington, KY 40506 USA

来源：

JOURNAL OF MEMBRANE SCIENCE | 2010年 / 359卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Cross-linked poly(ethylene oxide); Carbon dioxide; TRIS; Membrane gas separation; SEGMENTED BLOCK-COPOLYMERS; CHAIN PENDANT GROUPS; RELAXATION CHARACTERISTICS; POLYMERIC MEMBRANES; GLYCOL DIACRYLATE); CHEMICAL-STRUCTURE; NETWORKS; PERMEABILITY; PERMEATION; SEPARATION;

D O I：

10.1016/j.memsci.2010.01.049

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

3-[Tris-(trimethylsiloxy)silyl] propyl acrylate (TRIS-A) was copolymerized with poly(ethylene glycol) diacrylate (PEGDA), and the gas transport and physical properties of the resulting copolymers were characterized. Introduction of IRIS-A led to increased polymer fractional free volume and strong broadening of the glass-rubber relaxation without a significant shift in glass transition temperature in samples containing up to 80 wt% TRIS-A. Gas permeability increased significantly as TRIS-A content increased: for instance, addition of 80 wt% TRIS-A increased CO2 permeability from 110 to 800 barter. The strongly non-polar character of TRIS-A, however, resulted in progressively lower CO2 affinity for the polymer network, leading to decreased CO2/light gas selectivity with increasing TRIS-A content. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：25 / 36

页数：12

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