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Preparation of positively charged nanofiltration membrane from 2‐hydroxypropyltrimethyl ammonium chloride chitosan by 1,4‐butanediyl diglycidyl ether cross‐linking
Author(s) -
Huang Ruihua,
Chen Guohua,
Yang Bingchao,
Gao Congjie
Publication year - 2010
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.32160
Subject(s) - nanofiltration , membrane , chitosan , polyacrylonitrile , ammonium chloride , glutaraldehyde , chemistry , scanning electron microscope , polymer chemistry , chemical engineering , chloride , nuclear chemistry , materials science , chromatography , organic chemistry , polymer , composite material , biochemistry , engineering
A novel positively charged composite nanofiltration (NF) membrane was prepared using 2‐hydroxypropyltrimethyl ammonium chloride chitosan as active layer, polyacrylonitrile ultrafiltration membrane as substrate layer, and 1,4‐butanediol diglycidyl ether as cross‐linking reagent. The observation from scanning electron microscope revealed its composite structure. At room temperature and cross‐flow rate of 40 L h −1 , the permeability for pure water was 14.3 L h −1 m −2 MPa −1 . With an increase in operating pressure, the flux increased linearly. The rejection to different salt solutions was decreasing in the order of CaCl 2 , MgCl 2 , MgSO 4 , NaCl, and Na 2 SO 4 , revealing the rejection characteristic of positively charge NF membrane. And it had good ion perm‐selectivity. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010