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Issue 47, 2013
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A poly(vinylidene fluoride)-graft-poly(dopamine acrylamide) copolymer for surface functionalizable membranes

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Abstract

Poly(dopamine acrylamide)-grafted poly(vinylidene fluoride) (PVDF-g-PDA) microfiltration (MF) membranes were fabricated via (i) thermally-induced radical graft copolymerization of pentafluorophenyl acrylate from ozone-pretreated PVDF, (ii) reactive ester–amine reaction with dopamine hydrochloride, and (iii) membrane casting via phase inversion. The resulting catechol-containing PVDF-g-PDA MF membranes can be further functionalized via spontaneous reduction and chelating of Ag and Au nanoparticles on the surface, and via grafting of thiol-terminated poly(ethylene glycol) (PEG-SH), amino-terminated poly(N-isopropylacrylamide) (PNIPAM-NH2) or amino-terminated hyperbranched polyglycerol (HPG-NH2) in Michael addition or Schiff base reactions. The as-synthesized PVDF-g-PDA/Ag nanoparticles composite MF membrane was explored for its antibacterial efficacy against Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus). The resulting PVDF-g-PDA/Au nanoparticles composite MF membrane was investigated as the catalytic support for the reduction of 4-hydroxynitrobenzene. The obtained PVDF-g-PDA/PNIPAM, PVDF-g-PDA/PEG and PVDF-g-PDA/HPG MF membranes exhibit thermo-responsive, biocompatible and anti-fouling properties, respectively.

Graphical abstract: A poly(vinylidene fluoride)-graft-poly(dopamine acrylamide) copolymer for surface functionalizable membranes

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Publication details

The article was received on 05 Jun 2013, accepted on 17 Oct 2013 and first published on 18 Oct 2013


Article type: Paper
DOI: 10.1039/C3RA42782J
Citation: RSC Adv., 2013,3, 25204-25214
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    A poly(vinylidene fluoride)-graft-poly(dopamine acrylamide) copolymer for surface functionalizable membranes

    L. Q. Xu, J. C. Chen, R. Wang, K. Neoh, E. Kang and G. D. Fu, RSC Adv., 2013, 3, 25204
    DOI: 10.1039/C3RA42782J

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