Activation of PVDF membranes through facile hydroxylation of the polymeric dope

Handle URI:
http://hdl.handle.net/10754/626297
Title:
Activation of PVDF membranes through facile hydroxylation of the polymeric dope
Authors:
Al-Gharabli, Samer; Mavukkandy, Musthafa O. ( 0000-0003-3540-5748 ) ; Kujawa, Joanna; Nunes, Suzana Pereira ( 0000-0002-3669-138X ) ; Arafat, Hassan A.
Abstract:
A method comprising a two-step alkali/acid treatment of poly (vinylidene fluoride) (PVDF) polymer is developed for the fabrication of flat-sheet PVDF membranes functionalized with labile hydroxyl groups. This method involves the application of a short-duration modification in alkali medium (5% KOH). Extensive characterizations were performed on the prepared membranes. Modification of the polymer altered the crystallinity of the PVDF from a mixture of both α and β phases to a predominant β phase. Lower work of adhesion of the modified membrane indicated the formation of a more hydrophobic and wetting-resistant membrane surface. Centrifugation of the polymer dope after the modification had a pronounced impact on the properties of the resultant membranes. This protocol could be utilized in fine-tuning the properties of PVDF membranes for various target-specific applications such as membrane distillation. This method can also be used in functionalizing PVDF membranes further by exploiting the labile –OH group present on the membrane surface.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division
Citation:
Al-Gharabli S, Mavukkandy MO, Kujawa J, Nunes SP, Arafat HA (2017) Activation of PVDF membranes through facile hydroxylation of the polymeric dope. Journal of Materials Research 32: 4219–4231. Available: http://dx.doi.org/10.1557/jmr.2017.403.
Publisher:
Cambridge University Press (CUP)
Journal:
Journal of Materials Research
Issue Date:
30-Oct-2017
DOI:
10.1557/jmr.2017.403
Type:
Article
ISSN:
0884-2914; 2044-5326
Sponsors:
The authors acknowledge King Abdullah University of Science and Technology (KAUST), Saudi Arabia, for hosting the second author (Musthafa O. Mavukkandy) during the initial stage of his work in this study. The author Musthafa is also thankful to Dr. N.M. Srivatsa Bettahalli for helpful discussions.
Additional Links:
https://www.cambridge.org/core/journals/journal-of-materials-research/article/activation-of-pvdf-membranes-through-facile-hydroxylation-of-the-polymeric-dope/466E373846F0A6D64B9B961187B4B707
Appears in Collections:
Articles; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorAl-Gharabli, Sameren
dc.contributor.authorMavukkandy, Musthafa O.en
dc.contributor.authorKujawa, Joannaen
dc.contributor.authorNunes, Suzana Pereiraen
dc.contributor.authorArafat, Hassan A.en
dc.date.accessioned2017-12-06T06:43:32Z-
dc.date.available2017-12-06T06:43:32Z-
dc.date.issued2017-10-30en
dc.identifier.citationAl-Gharabli S, Mavukkandy MO, Kujawa J, Nunes SP, Arafat HA (2017) Activation of PVDF membranes through facile hydroxylation of the polymeric dope. Journal of Materials Research 32: 4219–4231. Available: http://dx.doi.org/10.1557/jmr.2017.403.en
dc.identifier.issn0884-2914en
dc.identifier.issn2044-5326en
dc.identifier.doi10.1557/jmr.2017.403en
dc.identifier.urihttp://hdl.handle.net/10754/626297-
dc.description.abstractA method comprising a two-step alkali/acid treatment of poly (vinylidene fluoride) (PVDF) polymer is developed for the fabrication of flat-sheet PVDF membranes functionalized with labile hydroxyl groups. This method involves the application of a short-duration modification in alkali medium (5% KOH). Extensive characterizations were performed on the prepared membranes. Modification of the polymer altered the crystallinity of the PVDF from a mixture of both α and β phases to a predominant β phase. Lower work of adhesion of the modified membrane indicated the formation of a more hydrophobic and wetting-resistant membrane surface. Centrifugation of the polymer dope after the modification had a pronounced impact on the properties of the resultant membranes. This protocol could be utilized in fine-tuning the properties of PVDF membranes for various target-specific applications such as membrane distillation. This method can also be used in functionalizing PVDF membranes further by exploiting the labile –OH group present on the membrane surface.en
dc.description.sponsorshipThe authors acknowledge King Abdullah University of Science and Technology (KAUST), Saudi Arabia, for hosting the second author (Musthafa O. Mavukkandy) during the initial stage of his work in this study. The author Musthafa is also thankful to Dr. N.M. Srivatsa Bettahalli for helpful discussions.en
dc.publisherCambridge University Press (CUP)en
dc.relation.urlhttps://www.cambridge.org/core/journals/journal-of-materials-research/article/activation-of-pvdf-membranes-through-facile-hydroxylation-of-the-polymeric-dope/466E373846F0A6D64B9B961187B4B707en
dc.rightsArchived with thanks to Journal of Materials Researchen
dc.subjectmicrostructureen
dc.subjectpolymeren
dc.subjectsurface chemistryen
dc.titleActivation of PVDF membranes through facile hydroxylation of the polymeric dopeen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalJournal of Materials Researchen
dc.eprint.versionPre-printen
dc.contributor.institutionPharmaceutical and Chemical Engineering Department, German-Jordanian University, Amman 11180, Jordanen
dc.contributor.institutionDepartment of Chemical Engineering, Masdar Institute, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emiratesen
dc.contributor.institutionFaculty of Chemistry, Nicolaus Copernicus University in Toruń, Toruń 87-100, Polanden
kaust.authorNunes, Suzana Pereiraen
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