Gas Permeation Properties of Polymeric Membranes for Biosensor Prepared from Poly(vinyl chloride) Derivatives

Poly(vinyl chloride) 유도체로부터 제조된 바이오센서용 고분자막의 기체 투과특성

  • Lim, Chun-Won (Faculty of Chemical Engineering & Technology, Chonbuk National University) ;
  • Kim, Wan-Young (Faculty of Chemical Engineering & Technology, Chonbuk National University) ;
  • Lee, Youn-Sik (Faculty of Chemical Engineering & Technology, Chonbuk National University) ;
  • Yoon, Jeong-Won (Division of Life Science, University of Suwon) ;
  • Jeong, Yong-Seob (Faculty of Biotechnology, Chonbuk National University)
  • 임춘원 (전북대학교 화학공학부) ;
  • 김완영 (전북대학교 화학공학부) ;
  • 이연식 (전북대학교 화학공학부) ;
  • 윤정원 (수원대학교 생명과학부) ;
  • 정용섭 (전북대학교 응용생물공학부)
  • Received : 1998.09.21
  • Accepted : 1999.02.13
  • Published : 1999.05.10

Abstract

Membranes for biosensor were prepared from poly(vinyl chloride) (PVC)l derivatives using the solution casting method, and their gas permeabilities were studied. The polymer membranes dried slowly in air showed higher permeability coefficients than those dried in vacuum. The permeabilily coefficients of carboxylated poly(vinyl chloride) (CPVC) membranes for $O_2$ and $CO_2$ decreased as the pressure of the feed gas increased. The addition of dioctylphthalate (DOP) enhanced the permeation rates for $O_2$ and $CO_2$. For example, the permeability coefficients of CPVC membranes containing 30 wt. % DOP for $O_2$ and $CO_2$ at 100 psig were 2.03 and 0.96 Barrer, respectively, which were about 4~5 times higher than those of the membranes without DOP. Poly(vinyl chloride-co-vinyl acetate-co-vinyl alcohol) (Syn-PVCAcAl) obtained by hydrolysis of poly(vinyl chloride-co-vinyl acetate (PVCA) showed a higher permeability coefficient for $CO_2$ in the presence of DOP than that for commercial PVCAcAl, but did not show any significant difference in permeability for $O_2$.

Keywords

Biosensor;Membrane;Permeability Coefficient;Poly(vinyl chloride) Derivetives

Acknowledgement

Supported by : 한국과학재단

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