Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
636340 | Journal of Membrane Science | 2010 | 12 Pages |
Abstract
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 TRIS-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 80Â wt% TRIS-A. Gas permeability increased significantly as TRIS-A content increased: for instance, addition of 80Â wt% TRIS-A increased CO2 permeability from 110 to 800Â barrer. 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.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Victor A. Kusuma, Benny D. Freeman, Stephan L. Smith, Alexander L. Heilman, Douglass S. Kalika,