Thin film composite reverse osmosis membranes prepared via layered interfacial polymerization
作者： Wansuk Choi , Sungkwon Jeon , Soon Jin Kwon , Hosik Park , You-In Park
DOI: 10.1016/J.MEMSCI.2016.12.066
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摘要: Abstract Reverse osmosis (RO) process using a thin-film composite (TFC) membrane is current leading technology for water desalination. The polyamide permselective layer of the TFC enables salt retention and permeation, with ultimate goal minimizing thickness maximum energy efficiency. Yet this drive towards reducing greatly handicapped by interfacial polymerization (IP) approach used to fabricate membranes. We present layered (LIP) as new paradigm fabricating membranes unprecedented nanoscale control in smoothness, coupled advantage industrial scale manufacturability. Membranes fabricated LIP demonstrated high NaCl rejection necessary desalination, permeance ≈ 86% permselectivity 450% greater than that prepared conventional IP comparable 17% higher commercial RO In addition, unique smooth morphology LIP-assembled surface enabled mitigate fouling compared characteristic rough IP-assembled membrane.
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