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A Innovative Fabrication Method of Polyamide (PA) Thin Film Composite (TFC) Reverse Osmosis (RO) Membranes via Dual-layer Slot Coating (DSC)

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  • URLhttps://db.koreascholar.com/Article/Detail/345517
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한국막학회 (The Membrane Society Of Korea)
초록

We report on a unique fabrication technique, DSC for high performance PA TFC RO membranes. DSC allows the simultaneous and continuous spreading of two reactive monomer solutions to create an unsupported PA layer, which is then adhered onto a porous support to form a membrane. DSC facilitates the characterization of the PA layer structure by easily isolating it. The DSC-PA layer exhibits a thinner and smoother structure with a more wettable and less negatively charged surface than one prepared via conventional interfacial polymerization (IP). DSC enables the formation of an extremely thin (~9 nm) and dense PA layer using a very low MPD concentration, which is not feasible by conventional IP. Importantly, the DSC-assembled membrane shows the excellent water flux and NaCl rejection, exceeding both the IP control and commercial RO membranes.

저자
  • 박성준(고려대학교 화공생명공학과) | Sung-Joon Park
  • 최완석(고려대학교 화공생명공학과) | Wansuk Choi
  • 이정현(고려대학교 화공생명공학과) | Jung-Hyun Lee