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Gas Permeation Characteristics of PTMSP/PMMH Dendrimer Composite Membranes  

Lee, Hyun-Kyung (Department of Industrical Chemistry, Sang Myung University)
Jung, Won-Sook (Department of Chemistry, Sang Myung University)
Publication Information
Membrane Journal / v.18, no.3, 2008 , pp. 226-233 More about this Journal
Abstract
PTMSP/PMMH dendrimer composite membranes were made by dispersing $0{\sim}20$ wt% (based on polymer content) PMMH dendrimer nanoparticles in the PTMSP casting solution. The effect of PMMH dendrimer on gas permeability characteristics of the composite membranes was investigated. The permeabilities of $H_2,\;N_2,\;CO_2$, and $CH_4$ decreased as the PMMH dendrimer content within PTMSP increased. The permeabilities of different gases except hydrogen in PTMSP/PMMH dendrimer membranes follow the order: $N_2\;<\;CH_4\;<\;CO_2$ which are consistent with the order of critical temperature ($N_2\;<\;CH_4\;<\;CO_2$). The selectivities of gases for $N_2$ increased as the PMMH dendrimer content within PTMSP increased. The $CO_2/N_2$ selectivity increased from 5.6 up to 16.9.
Keywords
PMMH dendrimer; composite membrane; PTMSP; permeability;
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Times Cited By KSCI : 3  (Citation Analysis)
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