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임재홍(Jae Hong Im),박종호(Jong Ho Park),장순호(Soon Ho Jang),조영일(Yung Il Joe) 한국화학공학회 2001 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.39 No.2
It was were estimated how the buffer pH, the salt concentration and the salt species such as sodium sulfate, ammonium sulfate, potassium sulfate and sodium chloride affected on the human immunoglobulin G(HIgG) adsorption by using poly(hydroxyethyl-methacrylate, HEMA) beads reacted with divinylsulfone(DVS). Salts of sulfate series promoted the HIgG adsorption according to their concentrations but sodium chloride did not. In the sulfate salts, the adsorption tendencies were different with canon species and were increased in the order of Na^+, K^+, (NH₄)^+*. There was the effect of pH on the adsorption of HIgG, but a constant tendency with salts was not observed.
비대칭 폴리이미드막의 제조 : effect of precipitation kinetic
전경용,김한성,한학수,조영일,장순호 한국공업화학회 1998 응용화학 Vol.2 No.2
The relationship between precipitation kinetic effect and morphologies of 6FDA-4,4'ODA polyimide membrane was investigated. The effect of the exchange rate of diffusion of DMAc-additive into the casting polymer solution is explored. It is found that if a nonsolvent contained a lager amount of DMAc is used, polymer solution system have a low nonsolvent diffusion coefficient and the less porous structure with a defect free skin. It can be predicted what membrane structure will be formed by observing the precipitation kinetics.