Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Fabrication of Fluorinated Polymeric Membranes and Their Noble Gas Separation Properties

불소 표면 개질 고분자 분리막의 제조와 노블가스 분리특성

  • Kim, Gi-Bum (Nano Bio-Sensor Research Team (BK21), Department of Chemistry, Hannam University) ;
  • Yoon, Kuk-Ro (Nano Bio-Sensor Research Team (BK21), Department of Chemistry, Hannam University)
  • Received : 2010.04.06
  • Accepted : 2010.05.25
  • Published : 2010.08.10
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Abstract

Fluorinated polymeric membranes were prepared by direct surface modification of PDMS with fluorine gas ($50{\sim}2000\;{\mu}mol/mol$ in nitrogen). The formed fluorinated polymeric membranes were characterized by FT-IR spectroscopy, GC (Gas chromatography), atomic force microscopy, and scanning electron microscopy. Direct fluorination resulted in the change of permeability and selectivity of various gases (pure gases such as $CO_2$, $O_2$, $N_2$, $C_2H_4$, mixture of He, Ne, Kr, Xe) through PDMS membranes. Fluorination resulted in the maximum 50% increase of selectivity through PDMS membrane.

불소화 반응을 통하여 PDMS을 질소 분위기 하에서 $50{\sim}2000\;{\mu}mol/mol$ 농도의 불소 가스($F_2$)를 사용하여 직접적인 방법으로 복합막 표면개질을 하였고 이를 OM (Optical Microscope), AFM (Atomic Force Microscope), SEM (Scanning electron microscope), FT-IR (Fourier transform infrared spectroscopy)을 측정하여 막 표면을 연구하였고 GC (Gas chromatography)로 혼합 노블가스의 기체 거동을 조사하였다. 다양한 노블 혼합 가스를 사용하여 표면 개질된 PDMS 멤브레인의 선택도가 50% 향상 되었다.

Keywords

References

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