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Polydimethylsiloxane 계 촉진수송 산소부화막의 제조 및 그 투과 특성
심정섭,김은영,강용수,김병기,홍재민 ( Jyong Sup Shim,Un Young Kim,Yong Soo Kang,Byung Gi Kim,Jae Min Hong ) 한국공업화학회 1990 공업화학 Vol.1 No.2
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℃ from the PDMS membrane containing 1 wt% of Co(saldpt). Facilitation behavior was explained in terms of the dual sorption model.
소결공정에 의한 Poly ( hydroxypropyl methacrylate ) Membrane 제조와 그의 투과특성에 관한 연구
심정섭,이동권,홍재민 ( Jyong Sup Shim,Dong Kweon Lee,Jae Min Hong ) 한국공업화학회 1990 공업화학 Vol.1 No.2
Poly(hydroxypropyl methacrylate) membranes and matrix devices having tertiary amine moiety were prepared by sintering method, and their permeation charateristics were investigated. The water content of this membrane was increased with decresing the pH of the medium. The permeability of this membrane was increased with decreasing the sintering pressure. Using sintered matrix device `burst effect` was found at the early stage, and initial insulin release of glucose oxidase immobilized matrix device could be controlled by glucose concentration of the solution.
Tertiary Amine 을 포함하는 Hydroxypropyl Methacrylate 고분자막의 투과특성
홍재민,심정섭 ( Jae Min Hong,Jyong Sup Shim ) 한국공업화학회 1990 공업화학 Vol.1 No.2
Hydroxypropyl methacrylate polymeric membranes having tertiary amine moiety were prepared to control the release rate of insulin in response to the concentration of glucose. Hydroxypropyl methacrylate was copolymerized with N, N`-diethylaminoethylacrylate. Its water content was increased with decreasing the pH of the medium and was reversible with variation of the pH of the medium. The permeation coefficient of insulin through copolymer membrane was also increased with decreasing the pH of the medium. Combining this copolymer membrane and the glucose oxidase immobilized membrane as a sensor for glucose, composite membrane was prepared. The permeability of this composite membrane was increased with addition of glucose.