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Characterization of temperature-sensitive membranes prepared from poly(vinylidene fluoride)-graft-poly(N-isopropylacrylamide) copolymers obtained by atom transfer radical polymerization

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Frontiers of Materials Science in China : Volume 4, Issue 3, September 2010

Frontiers of Materials Science in China : Volume 4, Issue 2, June 2010

Frontiers of Materials Science in China : Volume 4, Issue 1, March 2010

Frontiers of Materials Science in China : Volume 3

Frontiers of Materials Science in China : Volume 2

Frontiers of Materials Science in China : Volume 1

Characterization of temperature-sensitive membranes prepared from poly(vinylidene fluoride)-graft-poly(N-isopropylacrylamide) copolymers obtained by atom transfer radical polymerization

Content Provider	Springer Nature Link
Author	Lin, Xian Kai Feng, Xia Chen, Li Zhao, Yi Ping
Copyright Year	2010
Abstract	In this paper, poly(vinylidene fluoride)-graft-poly(N-isopropylacrylamide) (PVDF-g-PNIPAAm) copolymers were synthesized directly via grafting temperature-sensitive material NIPAAm on PVDF by atom transfer radical polymerization (ATRP). The chemical structure of the graft copolymers was characterized by Fourier transform infrared (FTIR) and $^{1}$H-NMR spectroscopy. The temperature-sensitive membranes were prepared from the PVDF-g-PNIPAAm copolymers by the immersion precipitation process of the phase inversion method. The chemical composition and pore structure of the PVDF-g-PNIPAAm membranes were studied by X-ray photoelectron spectroscopy (XPS) and an automatic mercury porosimeter, respectively. The effects of temperature on pure water flux and bovine serum albumen (BSA) rejection ratio of the membranes were also investigated. The results showed that the grafted PNIPAAm chains tended to enrich on the surfaces of the membranes or the membrane pores during the membrane-forming process. Pore diameter and porosity of the copolymer membranes were larger than those of the pristine PVDF membranes. Also, the PVDF-g-PNIPAAm membranes could exhibit temperature-sensitive performance in water flux and BSA rejection measurements.
Starting Page	345
Ending Page	352
Page Count	8
File Format	PDF
ISSN	16737377
Journal	Frontiers of Materials Science in China
Volume Number	4
Issue Number	4
e-ISSN	16737482
Language	English
Publisher	SP Higher Education Press
Publisher Date	2010-11-05
Publisher Institution	Chinese Universities
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	poly(vinylidene fluoride) (PVDF) N-isopropylacrylamide (NIPAAm) atom transfer radical polymerization (ATRP) temperature-sensitive membrane Materials Science
Content Type	Text
Resource Type	Article
Subject	Materials Science

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