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KMID : 0380020030180050412
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Korean Journal of Biotechnology and Bioengineering
2003 Volume.18 No. 5 p.412 ~ p.417
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Physical Properties of Reticulated Polyurethane Foams and the Enhancement of Microbial Adhesion through their Surface Treatments
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Kim Si-Wook
Chang Young-Mi
Myung Sung-Woong
Choi Ho-Seok
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Abstract
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We first investigated basic characteristics of reticulated polyurethane (PU) foams as microbial carriers. In general, the specific surface area of PU foams increases with respect to decreasing pore sizes. However, the number of microbes adhered on the unit surface of reticulated PU foams decreases with respect to decreasing pore sizes. Thus, as a result of totally considering all effects such as apparent density, hydrolysis rate, and adhesion, we can know that PU foams with 45 PPI is the most appropriate microbial carrier. In this study, we can also investigate the effect of various physico-chemical surface treatments on the adhesion of microbes on the surface of PU foams. We used a chitosan treatment, a PEI (Polyethylene Imine) treatment, a xanthane treatment and a plasma treatment. As a result of comparing all surface treatments, the plasma surface treatment was the best.
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KEYWORD
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Microbial, polyurethane, biocarriers, surface treatment, plasma
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