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Fabrication of innovative forward osmosis membranes via multilayered interfacial polymerization on electrospun nanofibers
Author(s) -
Huang Manhong,
Meng Lijun,
Li Beibei,
Niu Feihu,
Lv Yan,
Deng Qian,
Li Jin
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47247
Subject(s) - membrane , interfacial polymerization , thin film composite membrane , polyamide , materials science , forward osmosis , nanofiber , chemical engineering , fabrication , electrospinning , desalination , polymerization , polymer chemistry , reverse osmosis , composite material , polymer , monomer , chemistry , medicine , biochemistry , alternative medicine , pathology , engineering
Practical application of forward osmosis (FO) membranes is beset by low water flux and vulnerability of selective polyamide (PA) layers. Herein, novel composite membranes were fabricated with multilayered PA via cyclic interfacial polymerization (IP) on electrospun polyethersulfone (PES) nanofiber substrates to realize high performance FO. The membrane fabrication conditions were optimized detailedly with respect to the morphologies, physicochemical properties, and FO performances. It is indicated that the PES concentration has great impacts on the morphology, thickness, and fiber diameter of the electrospun substrates and the optimal concentration is proved to be 26 wt %. After multilayered IP, the membrane thickness, surface hydrophilicity, and mechanical strength increased with IP cycles. The optimized FO membranes with two PA layers show much higher water flux and membrane selectivity compared with the commercial thin film composite membranes, holding great promise for water purification and seawater desalination. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47247.