Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Preparation and Gas Permeation Properties of PDMS-HNT Nanotube Composite Membrane

PDMS-HNT 나노튜브 복합막의 제조와 기체투과 성질

  • Received : 2014.03.17
  • Accepted : 2014.04.24
  • Published : 2014.06.30
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Abstract

PDMS (polydimethylsiloxane)-HNT (halloysite nanotube) composite membranes were prepared with different amounts tendency of HNT 5, 10, 20 and 30 wt% and rubbery polymer PDMS. The characteristics of these membranes were studied by FT-IR, XRD, TGA, and SEM. Gas permeation experiment were performed under condition of $25^{\circ}C$ and $3kg/cm^2$. Gas permeability of $N_2$, $H_2$, $CH_4$, and $CO_2$ and selectivity were investigated by increasing the amount of HNT contents in the PDMS. In $H_2$, $N_2$, $CH_4$, and $CO_2$ gases, as increasing HNT contents from 0 to 30 wt%, decreasing value of the permeability were observed. The selectivity of ($CO_2/N_2$) was shown in the range of 14 to 44 and the range of selectivity of ($CO_2/CH_4$) was 3.0 to 7.0.

고무상 고분자인 PDMS (polydimethylsiloxane)에 HNT (halloysite nanotube)의 함량을 5, 10, 20, 30 wt%로 달리하여 PDMS-HNT 복합막을 제조하고, FT-IR, XRD, TGA, SEM에 의해서 막의 특성을 조사하였다. 기체투과 실험은 $25^{\circ}C$, $3kg/cm^2$ 조건에서 수행하였고, PDMS-HNT 복합막의 HNT 함량 변화에 따른 $H_2$, $N_2$, $CH_4$, $CO_2$들의 기체투과도와 선택도를 조사하였다. $H_2$, $N_2$, $CH_4$, $CO_2$의 투과기체에 대해 HNT 함량이 0~30 wt% 범위에서 HNT 함량이 증가할수록 기체들의 투과도는 전체적으로 감소하는 경향을 보였다. 선택도($CO_2/N_2$)는 14~44의 값을 보였고, 선택도($CO_2/CH_4$)는 3.0~7.7의 값을 보였다.

Keywords

References

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