Dehydration of Alcohol Solutions Through Crosslinked Chitosan Composite Membranes II. Dehydration of Ethanol Solution Through Modified Chitosan Composite Membranes

가교키토산 복합막을 통한 알콜수용액의 탈수 II. 변성 키토산 복합막을 통한 에탄올의 탈수

  • 이영무 (한양대학교 공과대학 공업화학과) ;
  • 남상용 (한양대학교 공과대학 공업화학과) ;
  • 유제강 (한양대학교 공과대학 화학공학과) ;
  • 류경옥 (한양대학교 공과대학 화학공학과)
  • Published : 1996.12.01

Abstract

To improve pervaporation performance of water/ethanol mixtures, chitosan/poly(vinyl alcohol) blended and phosphorylated chitosan composite membranes were prepared. Chitosan/poly(vinyl alcohol) blends were prepared with various blend ratios and then crosslinked with glutaraldehyde by two methods. With increasing crosslinking agent content and crosslinking times separation factor increased and permeate flux decreased. Separation factor of the membrane which contains glutaraldehyde as a crosslinking agent was higher than that of the membrane surface crosslinked. Phosphorylated chitosan was prepared with various reaction times and composite membrane was prepared. As reaction times increased, the separation factor increased with high affinity for water.

Keywords

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