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Search / Korean Journal of Chemical Engineering
Korean Chemical Engineering Research,
Vol.42, No.1, 59-64, 2004
친수성으로 표면개질한 폴리설폰막의 투과플럭스
Permeation Flux of Surface-modified Hydrophilic Polysulfone Membrane
송근호, 김강희, 조성헌, 이광래, 임종호, 배성수
실관막형 폴리설폰 막의 표면을 2-hydroxyethylmethacrylate(HEMA)로 코팅하였으며, 코팅인자들인 azobisisobutyronitrile(AIBN)/HEMA 성분비, 용매의 종류(물, 메탄올), UV 조사시간 등이 투과플럭스에 미치는 영향을 조사하였다. AIBN/HEMA/메탄올 용액으로 코팅한 막이 AIBN/HEMA/물 용액으로 코팅한 막보다 약 2.65배의 높은 수투과 플럭스를 나타내었으며, AIBN/HEMA 성분비가 높고, UV조사시간이 길수록 투과플럭스가 높았다. AIBN/HEMA 성분비와 UV 조사시간에서 코팅한 막의 투과플럭스는 원래의 막(코팅하지 않은 막)보다 높게 나타났다. 또한, 오일에멀젼에 의한 fouling은 코팅한 막과 원래의 막에 모두 나타났지만, 코팅한 막의 fouling이 원래의 막 보다 현저히 낮았다. 즉, fouling 발생 후 코팅한 막의 수투과 플럭스(0.2683 g/cm2·min)는 코팅하지 않은 막(0.0448 g/cm2·min)보다 약 6배 이상으로 높게 유지되었다.
A hollow-fiber type polysulfone UF membrane was surface-coated with 2-hydroxyethylmethacrylate(HEMA). The effect of various coating parameters on permeation flux was investigated, such as concentration ratio of Azobisisobutyronitrile(AIBN)/HEMA, solvent (water or methanol), and UV irradiation time. The membrane coated with a solution of AIBN/HEMA/methanol showed about 2.65 times higher water flux than that coated with a solution of AIBN/HEMA/water. The membrane coated with a solution of higher AIBN/HEMA ratio and a longer UV irradiation time exhibited a higher permeation flux. The membrane coated with a solution of lower AIBN/HEMA ratio needed a longer UV irradiation time for coating to get a same level of permeation flux. In order to have a greater permeation flux than uncoated membrane, the membrane should be coated with a solution of a certain AIBN/HEMA ratio and UV irradiation time. The fouling by oil emulsion occurred to both of the coated and the uncoated membrane. However, the fouling of coated membrane was much less than uncoated one; the water flux (0.2683 g/cm2·min) through the coated membrane was about 6 times higher than that (0.0448 g/cm2·min) through the uncoated membrane.
Keywords: Surface-Modified; Polysulfone; Hydrophilic; Flux; Fouling
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[Cited By]
  1. Park SJ, Hwang JS, Choi WK, Lee HK, Huh KM, Polymer(Korea), 38(2), 205, 2014
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