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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2013.23.6.418

Separation of $H_2$ and $N_2$ Gases by PDMS-chitosan Composite Membranes  

Ha, Jung Im (Department of Chemistry, Sang Myung University)
Kang, Tae Beom (Department of Chemistry, Sang Myung University)
Publication Information
Membrane Journal / v.23, no.6, 2013 , pp. 418-424 More about this Journal
Abstract
The PDMS-chitosan composite membranes were prepared by addition of 0.02~0.60 wt% chitosan to PDMS. In order to investigate the characteristics of these membranes, we used the analytical methods such as SEM and TGA. Gas permeation experiments was performed in $30^{\circ}C$, $4kg/cm^2$, the permeability and selectivity of $H_2$ and $N_2$ according to content change in composite membrane were investigated. The permeability of $H_2$ and $N_2$ for the PDMS-chitosan composite membranes increased when 0~0.20 wt% chitosan was added, and then decreased at higher wt% as chitosan content increased. The selectivity ($H_2/N_2$) of PDMS-chitosan composite membranes decreased when 0~0.20 wt% chitosan was added, and then increased as chitosan content increased. In the case of PDMS-chitosan in which chitosan was inserted to PDMS, thermal stability of PDMS was enhanced. Based on SEM observation, as the chitosan content within PDMS increased, the surface of the composite membranes became coarse and began to form holes.
Keywords
PDMS; chitosan; $H_2$ permeability; selectivity ($H_2/N_2$);
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Times Cited By KSCI : 2  (Citation Analysis)
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