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dc.contributor.authorReis, R
dc.contributor.authorDuke, MC
dc.contributor.authorTardy, BL
dc.contributor.authorOldfield, D
dc.contributor.authorDagastine, RR
dc.contributor.authorOrbell, JD
dc.contributor.authorDumee, LF
dc.date.accessioned2020-12-21T01:16:21Z
dc.date.available2020-12-21T01:16:21Z
dc.date.issued2017-06-30
dc.identifierpii: 10.1038/s41598-017-04900-5
dc.identifier.citationReis, R., Duke, M. C., Tardy, B. L., Oldfield, D., Dagastine, R. R., Orbell, J. D. & Dumee, L. F. (2017). Charge tunable thin-film composite membranes by gamma-ray triggered surface polymerization. SCIENTIFIC REPORTS, 7 (1), https://doi.org/10.1038/s41598-017-04900-5.
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/11343/256439
dc.description.abstractThin-film composite poly(amide) (PA) membranes have greatly diversified water supplies and food products. However, users would benefit from a control of the electrostatic interactions between the liquid and the net surface charge interface in order to benefit wider application. The ionic selectivity of the 100 nm PA semi-permeable layer is significantly affected by the pH of the solution. In this work, for the first time, a convenient route is presented to configure the surface charge of PA membranes by gamma ray induced surface grafting. This rapid and up-scalable method offers a versatile route for surface grafting by adjusting the irradiation total dose and the monomer concentration. Specifically, thin coatings obtained at low irradiation doses between 1 and 10 kGy and at low monomer concentration of 1 v/v% in methanol/water (1:1) solutions, dramatically altered the net surface charge of the pristine membranes from -25 mV to +45 mV, whilst the isoelectric point of the materials shifted from pH 3 to pH 7. This modification resulted in an improved water flux by over 55%, from 45.9 to up 70 L.m-2.h-1, whilst NaCl rejection was found to drop by only 1% compared to pristine membranes.
dc.languageEnglish
dc.publisherNATURE PUBLISHING GROUP
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.titleCharge tunable thin-film composite membranes by gamma-ray triggered surface polymerization
dc.typeJournal Article
dc.identifier.doi10.1038/s41598-017-04900-5
melbourne.affiliation.departmentChemical and Biomolecular Engineering
melbourne.source.titleScientific Reports
melbourne.source.volume7
melbourne.source.issue1
dc.rights.licenseCC BY
melbourne.elementsid1221564
melbourne.contributor.authorDagastine, Raymond
melbourne.contributor.authorTardy, Blaise
melbourne.contributor.authorTardy, Blaise
dc.identifier.eissn2045-2322
melbourne.accessrightsOpen Access


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