Proceedings of the Membrane Society of Korea Conference (한국막학회:학술대회논문집)

The Membrane Society of Korea (한국막학회)
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Mixed matrix membranes of poly(vinyl alcohol) loaded with phosphomolybdic heteropolyacid for the pervaporation separation of water-isopropanol mixtures

Water-IsopropanoI 혼합물의 투과증발 분리를 위한 poly(vinyl alcohol)-phosphomoIybdic heteropolyacid 혼합막

  • Teli, Shivanand (Department of Biosystems and Biomaterials Science and Engineering, Seoul National University) ;
  • Choi, Hyoung-Woo (Department of Biosystems and Biomaterials Science and Engineering, Seoul National University) ;
  • Moon, Jung-Me (Department of Biosystems and Biomaterials Science and Engineering, Seoul National University) ;
  • Park, Ji-Hye (Department of Biosystems and Biomaterials Science and Engineering, Seoul National University) ;
  • Hong, Sung-Pyo (Department of Biosystems and Biomaterials Science and Engineering, Seoul National University) ;
  • Tak, Tae-Moon (Department of Biosystems and Biomaterials Science and Engineering, Seoul National University)
  • ;
  • 최형우 (서울대학교 바이오시스템.소재학부) ;
  • 문정미 (서울대학교 바이오시스템.소재학부) ;
  • 박지혜 (서울대학교 바이오시스템.소재학부) ;
  • 홍성표 (서울대학교 바이오시스템.소재학부) ;
  • 탁태문 (서울대학교 바이오시스템.소재학부)
  • Published : 2008.05.16
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Abstract

Mixed matrix membranes of poly(vinyl alcohol) (PVA), loaded with phosphomolybdic heteropolyacid (HPA) and crosslinked with glutaraldehyde have been prepared by the solution casting technique. Pervaporation (PV) experiments have been performed at $30^{\circ}C$ to separate water-isopropanol feed mixtures containing 10 to 40 wt.% of water. The membranes were characterized by DSC and DMTA to understand their thermal behavior and mechanical strength properties. At high content (i.e. 7 wt.% with respect to weight of PVA) of HPA, the mixed matrix membranes could extract water efficiently on the permeate side with a selectivity of 90,000 and a flux of 0.032 $kg/m^2h$ for 10 wt.% of water containing feed mixture (the lowest feed composition of water studied). Flux of the mixed matrix membranes decreased with increasing concentrations of HPA.

Keywords