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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.
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.
안현진,손원일,홍주희,홍재민,An Hyun Jin,Son Won Il,Hong Joo Hee,Hong Jae-Min 한국마이크로전자및패키징학회 2004 마이크로전자 및 패키징학회지 Vol.11 No.2
Electronic devices are getting smaller due to integration of electronic chip, and heat generated in electronic devices can cause loss of performance and/or reliability of the devices. In this research, metals such as gold, nickel and copper are plated onto a porous membrane by electroless plating method to make an efficient micro-heatsinks. Electroless plating includes sensitization and activation steps in pre-treatment steps. A polycarbonate(PC) membrane was sensitizied, activated and deposited in each metal solution for plating. Among manufactured microfibrils, heat transfer and radiation properties of Ni-microfibril with high surface area were more effective than those of $Au^-$ and Cu-microfibril. 전자칩의 고집적화에 의해 전자기기들은 점점 소형화 되어가고 있으며, 이들 기기들에서 발생되는 열은 기기의 성능 저하뿐 아니라 수명을 단축시킨다. 본 연구에서는 효율적인 방열 위한 마이크로 히트싱크 제조를 위하여 멤브레인에 금속(금, 니켈, 구리)은 도금하는 무전해 도금 방법을 이용하였다. 무전해 도금은 폴리카보네이트 멤브레인을 sensitization과 activation 등의 전처리 후, 도금하고자 하는 금속염 수용액에 침적시켜 실행하였다. 무전해 도금에 의하여 제조된 각각의 마이크로피브릴의 열전달 특성과 방열량은 표면적이 가장 큰 니켈 마이크로피브릴에서 가장 우수하게 나타났다.