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Article: In situ embedment and growth of anhydrous and hydrated aluminum oxide particles on polyvinylidene fluoride (PVDF) membranes

TitleIn situ embedment and growth of anhydrous and hydrated aluminum oxide particles on polyvinylidene fluoride (PVDF) membranes
Authors
KeywordsAluminum oxide
Bacterial adhesion
Membrane fabrication
Particle embedment
PVDF
Surface hydrophilicity
Issue Date2011
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci
Citation
Journal Of Membrane Science, 2011, v. 368 n. 1-2, p. 134-143 How to Cite?
AbstractSurface modification of polyvinylidene fluoride (PVDF) membranes was successfully performed by doping anhydrous and hydrated aluminum oxide particles (γ-alumina, boehmite and gibbsite) through in situ particle embedment and subsequent crystal growth under a hydrothermal environment. The approach of particle embedment involves the dispersion of anhydrous or hydrated aluminum oxide particles in the water phase during PVDF membrane precipitation, and the result was found to strongly depend on the change of free energy in particle-membrane interaction. The embedment of γ-alumina nanoparticles is thermodynamically favorable, but the embedment of boehmite or gibbsite particles is less favorable, especially when using hydrophilic polyvinylpyrrolidone (PVP) additive within the membrane cast solution. The approach of 105 °C hydrothermal treatment initiates the growth of gibbsite on embedded γ-alumina nanoparticles, and the treatment duration determines the coverage of gibbsite particles on PVDF membrane. The overall hydrophilicity of membranes increases with the embedment of γ-alumina and the growth of gibbsite. An increase of membrane resistance was not observed with γ-alumina embedment, but the excessive growth of gibbsite particles may reduce membrane permeability. The Escherichia coli attachment result shows that the surface doping of aluminum oxide particles can greatly reduce E. coli adhesion to the membrane surface, suggesting the positive effect on the reduction of bio-fouling. The success of this PVDF membrane modification method has also provided a promising strategy to manipulate the surface property of other polymer membranes by inorganic materials. © 2010 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/132393
ISSN
2015 Impact Factor: 5.557
2015 SCImago Journal Rankings: 2.042
ISI Accession Number ID
Funding AgencyGrant Number
HKSARITS/151/09FP
Funding Information:

We acknowledge the funding for this research provided by the Innovation and Technology Fund (ITS/151/09FP) of the HKSAR. The authors are thankful to Alcoa Corporation for providing HiQ (R)-7223 boehmite.

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorWang, XMen_HK
dc.contributor.authorLi, XYen_HK
dc.contributor.authorShih, Ken_HK
dc.date.accessioned2011-03-28T09:24:05Z-
dc.date.available2011-03-28T09:24:05Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal Of Membrane Science, 2011, v. 368 n. 1-2, p. 134-143en_HK
dc.identifier.issn0376-7388en_HK
dc.identifier.urihttp://hdl.handle.net/10722/132393-
dc.description.abstractSurface modification of polyvinylidene fluoride (PVDF) membranes was successfully performed by doping anhydrous and hydrated aluminum oxide particles (γ-alumina, boehmite and gibbsite) through in situ particle embedment and subsequent crystal growth under a hydrothermal environment. The approach of particle embedment involves the dispersion of anhydrous or hydrated aluminum oxide particles in the water phase during PVDF membrane precipitation, and the result was found to strongly depend on the change of free energy in particle-membrane interaction. The embedment of γ-alumina nanoparticles is thermodynamically favorable, but the embedment of boehmite or gibbsite particles is less favorable, especially when using hydrophilic polyvinylpyrrolidone (PVP) additive within the membrane cast solution. The approach of 105 °C hydrothermal treatment initiates the growth of gibbsite on embedded γ-alumina nanoparticles, and the treatment duration determines the coverage of gibbsite particles on PVDF membrane. The overall hydrophilicity of membranes increases with the embedment of γ-alumina and the growth of gibbsite. An increase of membrane resistance was not observed with γ-alumina embedment, but the excessive growth of gibbsite particles may reduce membrane permeability. The Escherichia coli attachment result shows that the surface doping of aluminum oxide particles can greatly reduce E. coli adhesion to the membrane surface, suggesting the positive effect on the reduction of bio-fouling. The success of this PVDF membrane modification method has also provided a promising strategy to manipulate the surface property of other polymer membranes by inorganic materials. © 2010 Elsevier B.V.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memscien_HK
dc.relation.ispartofJournal of Membrane Scienceen_HK
dc.subjectAluminum oxideen_HK
dc.subjectBacterial adhesionen_HK
dc.subjectMembrane fabricationen_HK
dc.subjectParticle embedmenten_HK
dc.subjectPVDFen_HK
dc.subjectSurface hydrophilicityen_HK
dc.titleIn situ embedment and growth of anhydrous and hydrated aluminum oxide particles on polyvinylidene fluoride (PVDF) membranesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0376-7388&volume=368&issue=1-2&spage=134&epage=143&date=2011&atitle=In+situ+embedment+and+growth+of+anhydrous+and+hydrated+aluminum+oxide+particles+on+polyvinylidene+fluoride+(PVDF)+membranes-
dc.identifier.emailWang, XM: wangxm@hku.hken_HK
dc.identifier.emailLi, XY: xlia@hkucc.hku.hken_HK
dc.identifier.emailShih, K: kshih@hkucc.hku.hken_HK
dc.identifier.authorityWang, XM=rp01452en_HK
dc.identifier.authorityLi, XY=rp00222en_HK
dc.identifier.authorityShih, K=rp00167en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.memsci.2010.11.038en_HK
dc.identifier.scopuseid_2-s2.0-78650513171en_HK
dc.identifier.hkuros188283-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78650513171&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume368en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage134en_HK
dc.identifier.epage143en_HK
dc.identifier.eissn1873-3123-
dc.identifier.isiWOS:000286701800017-
dc.publisher.placeNetherlandsen_HK
dc.relation.projectFabrication of Anti-Biofouling PVDF Water Membrane through Impregnation of Alumina Nanomaterials-
dc.identifier.scopusauthoridWang, XM=23092524200en_HK
dc.identifier.scopusauthoridLi, XY=26642887900en_HK
dc.identifier.scopusauthoridShih, K=14072108900en_HK
dc.identifier.citeulike8336322-

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