Membrane and Water Treatment

  • 제6권5호
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  • Pages.351-363
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  • 2015
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  • 2005-8624(pISSN)
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  • 2092-7037(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Surface hydrophilicity modification of PVDF membranes with an external electric field in the phase inversion process

  • Shi, Bao-Li (Polymer Membrane Laboratory, College of Science, Northeast Forestry University) ;
  • Su, Xing (Polymer Membrane Laboratory, College of Science, Northeast Forestry University) ;
  • He, Jing (Polymer Membrane Laboratory, College of Science, Northeast Forestry University) ;
  • Wang, Li-Li (Polymer Membrane Laboratory, College of Science, Northeast Forestry University)
  • 투고 : 2014.07.30
  • 심사 : 2015.06.01
  • 발행 : 2015.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

To increase the surface hydrophilicity of PVDF membranes, in this paper, an electric enhancing method was adopted to treat PVDF nascent membranes during the phase inversion process. It was found that when PEG 600 was taken as the additive, the surface water contact angle of the PVDF membrane treated under 2 kV electric field was decreased from $84.0^{\circ}$ to $65.7^{\circ}$. The reason for the surface elements change of the PVDF membranes prepared under the electric field was analyzed in detail with the dielectric parameters of the polymer dope solutions. Results from BSA adsorption experiment showed that the antifouling ability of the external electric field-treated membranes was distinctly enhanced when compared with that of the untreated membranes. The amount of BSA adsorbed by the treated membranes was lower by 38-43%. Compared with the common chemical reaction methods to synthesize hydrophilic additives or membrane materials, the electric field-assisted processing method did not involve any additional chemical synthesis process and it was capable of realizing better hydrophilicity.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China

참고문헌

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피인용 문헌

  1. Antifouling polyimide membrane with grafted silver nanoparticles and zwitterion vol.192, 2018, https://doi.org/10.1016/j.seppur.2017.10.018
  2. Preparation of Nano-SiO 2 /Al 2 O 3 /ZnO-Blended PVDF Cation-Exchange Membranes with Improved Membrane Permselectivity and Oxidation Stability vol.11, pp.12, 2015, https://doi.org/10.3390/ma11122465
  3. Permeability and Antifouling Augmentation of a Hybrid PVDF-PEG Membrane Using Nano-Magnesium Oxide as a Powerful Mediator for POME Decolorization vol.12, pp.3, 2015, https://doi.org/10.3390/polym12030549