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Enhancement of Microbial Immobilization on the Surface of a Reticulated PU-g-PAAc Foam prepared through Graft Copolymerization induced by Atmosoheric Pressure Plasma Treatment  

Myung Sung Woon (Department of Chemical Engineering, Chungnam National University)
Jang Yung Mi (Department of Chemical Engineering, Chungnam National University)
Nam Ki Chun (Department of Chemical Engineering, Chungnam National University)
Choi Ho Suk (Department of Chemical Engineering, Chungnam National University)
Cho Dae Chul (Department of Environmental Engineering, Soonchunhyang University)
Publication Information
KSBB Journal / v.19, no.5, 2004 , pp. 399-405 More about this Journal
Abstract
A reticulated PU-g-PAAc foam was modified through the surface treatment of PU foam by one atmospheric pressure plasma. The synthesized PU-g-PAAc foam was prepared for the purpose of immobilizing microbial organisms. We also attempted different plasma treatment methods including simple plasma treatment, plasma induced grafting and plasma induced grafting followed by plasma re-treatment. The effect of grafting on equilibrium water content (EWC) of PU forms was examined by swelling measurements. Adhesion test was performed to investigate the effect of different plasma treatment methods on the improvement of microbial immobilization. Two foams modified by plasma induced grafting and plasma re-treatment after grafting showed 2.7 and 3.0 fold higher microbial immobilization than unmodified one, respectively. Meanwhile, simple plasma treatment showed a little enhancement. FT-IR analysis of each sample verified the contribution of surface functional groups on the enhancement of microbial immobilization. SEM observation confirmed microbial adherence.
Keywords
Microbial adherence; PU foam surface; One atmospheric pressure plasma; Graft copolymerization;
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