Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Preparation and Property of SBS Ion-exchange Membrane Via Post-sulfonation

Post-sulfonation에 의한 SBS 이온교환막의 제조 및 특성

  • Choi, Yongjae (Department of Chemical Engineering, College of Engineering, Chungnam National University) ;
  • Hwang, Eui Hwan (Department of Chemical Engineering, Kongju National University) ;
  • Hwang, Taek Sung (Department of Chemical Engineering, College of Engineering, Chungnam National University)
  • 최용재 (충남대학교 화학공학과) ;
  • 황의환 (공주대학교 화학공학부) ;
  • 황택성 (충남대학교 화학공학과)
  • Received : 2010.05.27
  • Accepted : 2010.07.23
  • Published : 2010.12.31
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Abstract

In this study, the sulfonated SBS cation-exchange membrane was prepared by post-sulfonation. Degree of sulfonation(DS), water-uptake, ion exchange capacity and electrical resistance and conductivity of sulfonated SBS were investigated as a function of sulfonation time. The DS of sulfonated SBS membrane was increased with increasing the reaction time and concentration of sulfuric acid. The maximum value of DS was 24.0%. And also, the water uptake and ion exchange capacity of the sulfonated SBS membrane were increased as increasing the value of DS. The values of water uptake and IEC were 41.2% and 0.80 meq/g, respectively. The electrical resistance and conductivity of the membrane showed $23.6{\Omega}{\cdot}cm^2$ and $4.24{\times}10^{-4}S/cm$, respectively.

본 연구에서는 post sulfonation 반응을 통하여 SBS 양이온교환막을 제조하였다. 술폰화 양이온교환막의 술폰화도, 함수율, 이온교환용량, 전기저항 및 전기전도도등 막의 전기적 특성을 술폰화 시간을 변수로 하여 확인하였다. 술폰화 SBS 막의 술폰화도는 반응시간 및 황산의 농도가 증가함에 따라 증가하였으며 최대 술폰화도는 24.0%이었다. 또한 막의 함수율과 이온교환용량은 술폰화도가 증가함에 따라 증가하였으며 각각 41.2%, 0.80 meq/g로 가장 높았으며, 전기저항과 전기전도도는 각각 $23.6{\Omega}{\cdot}cm^2$, $4.24{\times}10^{-4}S/cm$이었다.

Keywords

References

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