Show simple item record

dc.contributor.authorLiang, Shuai
dc.contributor.authorKang, Yan
dc.contributor.authorTiraferri, Alberto
dc.contributor.authorGiannelis, Emmanuel P.
dc.contributor.authorHuang, Xia
dc.contributor.authorElimelech, Menachem
dc.date.accessioned2016-02-25T13:31:10Z
dc.date.available2016-02-25T13:31:10Z
dc.date.issued2013-07-11
dc.identifier.citationLiang S, Kang Y, Tiraferri A, Giannelis EP, Huang X, et al. (2013) Highly Hydrophilic Polyvinylidene Fluoride (PVDF) Ultrafiltration Membranes via Postfabrication Grafting of Surface-Tailored Silica Nanoparticles. ACS Applied Materials & Interfaces 5: 6694–6703. Available: http://dx.doi.org/10.1021/am401462e.
dc.identifier.issn1944-8244
dc.identifier.issn1944-8252
dc.identifier.pmid23796125
dc.identifier.doi10.1021/am401462e
dc.identifier.urihttp://hdl.handle.net/10754/598504
dc.description.abstractPolyvinylidene fluoride (PVDF) has drawn much attention as a predominant ultrafiltration (UF) membrane material due to its outstanding mechanical and physicochemical properties. However, current applications suffer from the low fouling resistance of the PVDF membrane due to the intrinsic hydrophobic property of the membrane. The present study demonstrates a novel approach for the fabrication of a highly hydrophilic PVDF UF membrane via postfabrication tethering of superhydrophilic silica nanoparticles (NPs) to the membrane surface. The pristine PVDF membrane was grafted with poly(methacrylic acid) (PMAA) by plasma induced graft copolymerization, providing sufficient carboxyl groups as anchor sites for the binding of silica NPs, which were surface-tailored with amine-terminated cationic ligands. The NP binding was achieved through a remarkably simple and effective dip-coating technique in the presence or absence of the N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (EDC)/N-hydroxysuccinimide (NHS) cross-linking process. The properties of the membrane prepared from the modification without EDC/NHS cross-linking were comparable to those for the membrane prepared with the EDC/NHS cross-linking. Both modifications almost doubled the surface energy of the functionalized membranes, which significantly improved the wettability of the membrane and converted the membrane surface from hydrophobic to highly hydrophilic. The irreversibly bound layer of superhydrophilic silica NPs endowed the membranes with strong antifouling performance as demonstrated by three sequential fouling filtration runs using bovine serum albumin (BSA) as a model organic foulant. The results suggest promising applications of the postfabrication surface modification technique in various membrane separation areas. © 2013 American Chemical Society.
dc.description.sponsorshipThis publication is based on work supported by Award No. KUS-C1-018-02, granted by King Abdullah University of Science and Technology (KAUST). We also acknowledge the postgraduate scholarship program of the China Scholarship Council (CSC) and the use of facilities supported by YINQE and NSF MRSEC DMR 1119826.
dc.publisherAmerican Chemical Society (ACS)
dc.subjectantifouling
dc.subjectfouling
dc.subjectmembrane functionalization
dc.subjectnanoparticles
dc.subjectPVDF
dc.subjectsuperhydrophilic
dc.subjectultrafiltration
dc.titleHighly Hydrophilic Polyvinylidene Fluoride (PVDF) Ultrafiltration Membranes via Postfabrication Grafting of Surface-Tailored Silica Nanoparticles
dc.typeArticle
dc.identifier.journalACS Applied Materials & Interfaces
dc.contributor.institutionTsinghua University, Beijing, China
dc.contributor.institutionCornell University, Ithaca, United States
dc.contributor.institutionYale University, New Haven, United States
kaust.grant.numberKUS-C1-018-02
dc.date.published-online2013-07-11
dc.date.published-print2013-07-24


This item appears in the following Collection(s)

Show simple item record