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Membrane Water Treatment Volume 6, Number 5, September 2015, pages 423-437 DOI: https://doi.org/10.12989/mwt.2015.6.5.423 |
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The effect of Fullerene (C60) nanoparticles on the surface of PVDF composite membrane |
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Kyung Hee Kim, Ju Sung Lee, Hyun Pyo Hong, Jun Young Han, Jin-Won Park and ByoungRyul Min
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| Abstract | ||
| Polyvinylidene fluoride/fullerene nanoparticle (PVDF/C60) composite microfiltration (MF) membranes were fabricated by a non-solvent induced phase separation (NIPS) using N,N-dimethylacetamide (DMAc) as solvent and deionized water (DI) as coagulation solution. Polyvinylpyrrolidone (PVP) was added to the casting solution to form membrane pores. C60 was added in increments of 0.2% from 0.0% to 1.0% to produce six different membrane types: one pristine PVDF membrane type with no C60 added as control, and five composite membrane types with varying C60 concentrations of 0.2, 0.4, 0.6, 0.8 and 1.0%, respectively. The mechanical strength, morphology, pore size and distribution, hydrophilicity, surface property, permeation performance, and fouling resistance of the six membranes types were characterized using respective analytical methods. The results indicate that membranes containing C60 have higher surface porosity and pore density than the pristine membrane. The presence of numerous pores on the membrane caused weaker mechanical strength, but the water flux of the composite membranes increased in spite of their smaller size. Initial flux and surface roughness reached the maximum point among the composite membranes when the C60 concentration was 0.6 wt.%. | ||
| Key Words | ||
| polyvinylidene fluoride (PVDF); fullerene (C60); phase inversion; microfiltration (MF); composite membrane | ||
| Address | ||
| (1) Kyung Hee Kim, Ju Sung Lee, Hyun Pyo Hong, Jin-Won Park, ByoungRyul Min: Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, South Korea; (2) Jun Young Han: Fuel Cell Research Center, Korea Institute of Science and Technology, 39-1 Hawolgok-dong, Sungbuk-gu, Seoul 136-791, Republic of Korea. | ||