Poly(vinylidene fluoride)-graft-Poly(N-vinyl-2-pyrrolidone) Copolymers Prepared via a RAFT-Mediated Process and their Use in Antifouling and Antibacterial Membranes
✍ Scribed by Qiang Peng; Shiqiang Lu; Dezhi Chen; Xiaoqin Wu; Panfeng Fan; Rong Zhong; Yongwen Xu
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 449 KB
- Volume
- 7
- Category
- Article
- ISSN
- 1616-5187
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✦ Synopsis
Abstract
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.
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