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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.
임재홍,장우진,김한성,전경용,한학수,조영일 ( Jae Hong Im,Woo Jang,Han Sung Kim,Kyoung Yong Chun,Hak Soo Han,Yung Il Joe ) 한국화학공학회 1998 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.36 No.6
Poly(hydroxyethylmethacrylate)(polyHEMA) beads were prepared by suspension polymerization and the effects of 1-octanol and PVP(poly(N-vinyl-2-pyrrolidone) K-90) were investigated on the shape, size distribution, porosity and average pore radius of polyHEMA. As the concentration of 1-octanol increased, the shape became irregular and the average bead size grew. Also the porosity and the average pore radius were increased. Increasing in PVP concentration maked average radius small but the effect could be ignored when it was over 3 %. The porosity got a gains of nearby 25 % in proportion to the concentration. The effect on the whole shape was not significant but it maked the density of microsphere on the surface very lower.