Preparation and Permeation Characteristics of Modified Polydimethylsiloxane Membrane for Facilitated Oxygen Transport

Polydimethylsiloxane 계 촉진수송 산소부화막의 제조 및 그 투과 특성

  • 심정섭 (서울대학교 공업화학과) ;
  • 김은영 (한국과학기술연구원 분리막연구실) ;
  • 강용수 (한국과학기술연구원 분리막연구실) ;
  • 김병기 (서울대학교 공업화학과) ;
  • 홍재민 (서울대학교 공업화학과)
  • Received : 1990.11.26
  • Published : 1990.12.31


Polydimethylsiloxane(PDMS) containing [N, N'-bis (3- (salicylidene amino) propyl) amine Co(II)] (Co(saldpt)) as a fixed oxygen carrier was synthesized. UV-visible spectra of the membrane demonstrated that Co(saldpt) binded molecular oxygen specificaaly and reversibly. From time lag method experiment, it was found that both oxygen permeability and diffusibity increase with decreasing upstream pressure, while solubility maintain nearly constant. The maximum oxygen permeability and oxygen selectivity over nitrogen obtained was 18.6 barrer and 4, respectively, at 25 mmHg and $40^{\circ}C$ from the the PDMS membrane containing 1 wt% of Co(saldpt). Facilitation behavior was explained in terms of the dual sorption model.