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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2019.29.2.88

Propylene/Nitrogen Separation Membranes Based on Amphiphilic Copolymer Grafted from Poly(1-trimethylsilyl-1-propyne)  

Park, Cheol Hun (Department of Chemical and Biomolecular Engineering, Yonsei University)
Lee, Jae Hun (Department of Chemical and Biomolecular Engineering, Yonsei University)
Park, Min Su (Department of Chemical and Biomolecular Engineering, Yonsei University)
Kim, Jong Hak (Department of Chemical and Biomolecular Engineering, Yonsei University)
Publication Information
Membrane Journal / v.29, no.2, 2019 , pp. 88-95 More about this Journal
Abstract
Hydrocarbons containing carbon double bonds are generally called olefins and it is extensively used in petro-chemical industry as essential base material. Especially, olefins are essential in polymer synthesis and thus the effective separation and purification of olefins from gas mixture are very important and it gives significant positive effect on the future industrial development. In this study, we fabricated polymeric composite membrane based on poly(1-trimethylsilyl-1-propyne) (PTMSP) for propylene/nitrogen separation and enhancement of its separation performance by grafting amphiphilic copolymer. Furthermore, to accelerate facilitated transport for propylene molecules, Ag salt ($AgBF_4$) and ionic liquid ($EMIM-BF_4$) was incorporated to polymer composite membranes. The neat PTMSP membrane exhibited extremely high gas permeance and low gas selectivity due to its high free volume. To address this issue, PTMSP was grafted with poly(oxyethylene glycol methacrylate) (POEM) and poly(ethylene glycol) behenyl ether methacrylate (PEGBEM). Additionally, the additives such as $AgBF_4$ and $EMIM-BF_4$ further increased the propylene permeance, resulting in increment of propylene/nitrogen selectivity.
Keywords
graft copolymer; comb copolymer; polymer composite membrane; propylene; gas separation;
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Times Cited By KSCI : 7  (Citation Analysis)
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