Membrane Journal (멤브레인)

The Membrane Society of Korea (한국막학회)
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Gas Permeation Characteristics through Chitosan-HNT Composite Membrane

Chitosan-HNT 복합막을 이용한 기체 투과특성에 관한 연구

  • Received : 2014.07.31
  • Accepted : 2014.09.18
  • Published : 2014.10.31
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Abstract

Chitosan-HNT (halloysite nanotube) composite membranes were prepared by the addition of HNT 0, 3, 5, and 10 wt%. The structure of composite membranes were studied by FT-IR, XRD, TGA, and SEM. Gas permeation experiment were performed under condition of $30^{\circ}C$ and $4kgf/cm^2$. Gas permeability and selectivity were investigated by increasing the amount of HNT contents in the chitosan. Chitosan-HNT composite membrane for $CO_2$ and $CH_4$ showed the maximum value at 3 wt% of HNT content and decreased thereafter. The selectivity of ($CO_2/CH_4$) was increased due to its affinity with the OH groups on the HNT, was shown in the range of 1.3 to 3.8 at 0~10 wt%.

Chitosan에 HNT (halloysite nanotube)의 함량을 0, 3, 5, 10 wt%로 가하여 chitosan-HNT 복합막을 제조하였다. 복합막의 구조는 FT-IR, XRD, TGA, SEM으로 알아보았다. 기체투과 실험은 $30^{\circ}C$, $4kg/cm^2$ 조건에서 수행하였고, chitosan-HNT 복합막의 HNT 함량 변화에 따른 $CO_2$와 $CH_4$의 기체투과도와 선택도를 조사하였다. Chitosan-HNT 복합막의 기체 투과도는 HNT 함량이 3 wt%에서 가장 큰 값을 보였고, 그 이상의 함량에서는 감소하였다. 선택도($CO_2/N_2$)는 0~10 wt% 범위에서 HNT 내의 OH기와 $CO_2$ 간의 친화력으로 인하여 증가하였고, 약 1.3~3.8의 값을 보였다.

Keywords

References

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