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Poly(vinylidene fluoride)‐ graft ‐Poly( N ‐vinyl‐2‐pyrrolidone) Copolymers Prepared via a RAFT‐Mediated Process and their Use in Antifouling and Antibacterial Membranes
Author(s) -
Peng Qiang,
Lu Shiqiang,
Chen Dezhi,
Wu Xiaoqin,
Fan Panfeng,
Zhong Rong,
Xu Yongwen
Publication year - 2007
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.200700068
Subject(s) - copolymer , membrane , biofouling , polymer chemistry , grafting , chemistry , nanocomposite , chemical engineering , materials science , organic chemistry , polymer , nanotechnology , biochemistry , engineering
PNVP‐ g ‐PVDF copolymers were synthesized and used to produce microfiltration membranes. The pore size and distribution varied with the grafting concentration and the density of graft points. A significant decrease of the amounts of adsorbed BSA indicated improved antifouling properties of PVDF. The MF membranes were further functionalized via surface‐initiated block copolymerization with DMAEMA to obtain (PVDF‐ g ‐PNVP)‐ b ‐PDMAEMA MF membranes. Quaternization of the tertiary amine groups of the PDMAEMA brushes gave rise to a high concentration of quaternary ammonium salt on the membrane surfaces. The bactericidal effect of the QAS‐functionalized membranes on E. coli was also demonstrated and discussed.