Membrane and Water Treatment

  • 제4권2호
  • /
  • Pages.109-126
  • /
  • 2013
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  • 2005-8624(pISSN)
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  • 2092-7037(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Effect of NH3 plasma on thin-film composite membrane: Relationship of membrane and plasma properties

  • Kim, Eun-Sik (Department of Civil & Environmental Engineering, University of Missouri) ;
  • Deng, Baolin (Department of Chemical Engineering, University of Missouri)
  • 투고 : 2012.09.22
  • 심사 : 2013.03.08
  • 발행 : 2013.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

Surface modification by low-pressure ammonia ($NH_3$) plasma on commercial thin-film composite (TFC) membranes was investigated in this study. Surface hydrophilicity, total surface free energy, ion exchange capacity (IEC) and zeta (${\zeta}$)-potentials were determined for the TFC membranes. Qualitative and quantitative analyses of the membrane surface chemistry were conducted by attenuated total reflectance Fourier transform infrared (ATR FT-IR) spectroscopy. Results showed that the $NH_3$ plasma treatment increased the surface hydrophilicity, in particular at a plasma treatment time longer than 5 min at 50 W of plasma power. Total surface free energy was influenced by the basic polar components introduced by the $NH_3$ plasma, and isoelectric point (IEP) was shifted to higher pH region after the modification. A ten (10) min $NH_3$ plasma treatment at 90 W was found to be adequate for the TFC membrane modification, resulting in a membrane with better characteristics than the TFC membranes without the modification for water treatment. The thin-film chemistry (i.e., fully-aromatic and semi-aromatic nature in the interfacial polymerization) influenced the initial stage of plasma modification.

키워드

과제정보

연구 과제 주관 기관 : U.S. National Science Foundation

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피인용 문헌

  1. Towards Enhanced Performance Thin-film Composite Membranes via Surface Plasma Modification vol.6, pp.1, 2016, https://doi.org/10.1038/srep29206
  2. Plasma-induced physicochemical effects on a poly(amide) thin-film composite membrane vol.403, 2017, https://doi.org/10.1016/j.desal.2016.06.009
  3. Customizing the surface charge of thin-film composite membranes by surface plasma thin film polymerization vol.537, 2017, https://doi.org/10.1016/j.memsci.2017.05.013
  4. Thin Film Composite and/or Thin Film Nanocomposite Hollow Fiber Membrane for Water Treatment, Pervaporation, and Gas/Vapor Separation vol.10, pp.10, 2018, https://doi.org/10.3390/polym10101051