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Preparation and Characterization of PTMSP/PDMS-zeolite Composite Membranes for Gas Separation  

Kim, Na-Eun (Department of Chemistry, Sangmyung University)
Kang, Tae-Beom (Department of Chemistry, Sangmyung University)
Hong, Se Lyung (Department of Chemistry, Sangmyung University)
Publication Information
Membrane Journal / v.22, no.5, 2012 , pp. 342-351 More about this Journal
Abstract
In this study, PTMSP[poly(1-trimethylsilyl-1-propyne)]/PDMS[poly(dimethylsioxane)]-NaY zeolite and PTMSP/PDMS-NaA zeolite composite membranes were made to incorporate zeolite into PTMSP/PDMS graft copolymer in order to improve the selectivity and thermal stability, the drop of permeability by physical aging effect during long period of time for the PTMSP membrane. To investigate the physico-chemical characteristics of composite membranes, the analytical methods such as FT-IR, $^1H$-NMR, TGA, SEM, and GPC have been utilized. The gas permeability and selectivity properties of $H_2$ and $N_2$ were evaluated. The permeability of the PTMSP/PDMS-NaY zeolite and PTMSP/PDMS-NaA zeolite composite membranes than PTMSP/PDMS graft copolymer membrane increased, increased as zeolite content increased. On the contrary, the selectivity ($H_2/N_2$) of the composite membranes decreased as zeolite content increased. PTMSP/PDMS-NaA zeolite composite membrane showed better permeability and separation factor than PTMSP/PDMS-NaY zeolite composite membrane.
Keywords
PTMSP/PDMS graft copolymer; NaY zeolite; NaA zeolite; permeability; selectivity;
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