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- Kwon, Young-Nam
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Surface modification of polyvinylidene fluoride membrane for enhanced wetting resistance
- Author(s)
- Lee, Hyung Kae, Kim, Woojeong, Kim, Young Mi, Kwon, Young-Nam
- Issued Date
- 2019-10
- Citation
- APPLIED SURFACE SCIENCE, v.491, pp.32 - 42
- Abstract
- Modifications of polyvinylidene fluoride (PVDF) membranes were carried out to improve both hydrophobicity and stability through four steps: pore expansion by a plasma treatment, hydroxylation of the membrane by the Fenton reaction, generation and growth of microparticles (MPs) on the hydroxylated functional groups in pores, and hydrophobic modification. The membranes modified by the methods proposed in this study did not lose their hydrophobicity and maintained the flux over a significantly longer period. The PVDF membrane modified by hydrophobic MPs attached inside enlarged pores exhibited a minimized flux reduction and significantly higher antiwetting stability.
- Publisher
- Elsevier B.V.
- ISSN
- 0169-4332
- Keyword (Author)
- Direct-contact membrane distillation, Polyvinylidene fluoride, Superhydrophobicity, Surface modification, Wetting
- Keyword
- Fluorine compounds, Hydrophobicity, Hydroxylation, Membranes, Oxidation, Plasma applications, Plasma stability, Surface treatment, Direct contact membrane distillation, Fenton reactions, Generation and growth, Hydrophobic modification, Plasma treatment, Polyvinylidene fluoride membranes, Polyvinylidene fluorides, Superhydrophobicity, Wetting, Distillation
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