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Multidentate polyzwitterion attachment to polydopamine modified ultrafiltration membranes for dairy processing: characterization, performance and durability

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dc.contributor.authorBarclay, T.G.
dc.contributor.authorHegab, H.M.
dc.contributor.authorMichelmore, A.
dc.contributor.authorWeeks, M.
dc.contributor.authorGinic Markovic, M.
dc.date.issued2018
dc.descriptionData source: Supplementary data, https://www.sciencedirect.com/science/article/pii/S1226086X17306974?via%3Dihub#sec0255
dc.description.abstractFiltration membrane technologies are used extensively in dairy processing and due to the high quantities of both organic and inorganic foulant, membrane fouling is a significant problem in the industry. To address this issue, a polyzwitterionic antifouling coating was applied to polyethersulfone ultrafiltration membranes for reduction of biofouling in skim milk filtration. The novel polyzwitterion was synthesised from a branched polyethyleneimine-based macroinitiator to allow multidentate binding to polydopamine coated membranes. Attachment of polyzwitterion to the polydopamine was confirmed using FTIR-ATR and XPS and the coating proved effective in increasing the wettability and smoothness of the membrane surface as well as reducing its charge. The reduced strength of binding between proteins and the membrane of the coated membrane compared to the control was demonstrated with its positive influence on fouling coefficient and recovery of the membranes while retaining skim milk flux and the rejection characteristics of the control membrane. The improved filtration characteristics of the coated membranes were generally retained through multiple cleaning cycles, though there was evidence of oxidative degradation after sanitation.
dc.identifier.citationJournal of Industrial and Engineering Chemistry, 2018; 61:356-367
dc.identifier.doi10.1016/j.jiec.2017.12.035
dc.identifier.issn1226-086X
dc.identifier.urihttps://hdl.handle.net/11541.2/130356
dc.language.isoen
dc.publisherElsevier BV
dc.relation.fundingARC , Project: LP130100338
dc.relation.fundingDairy Innovation Australia Limited
dc.rightsCopyright 2017 The Korean Society of Industrial and Engineering Chemistry
dc.source.urihttps://doi.org/10.1016/j.jiec.2017.12.035
dc.subjectpolydopamine
dc.subjectpolyzwitterion
dc.subjectultrafiltration
dc.subjectdairy processing
dc.subjectanti-biofouling
dc.titleMultidentate polyzwitterion attachment to polydopamine modified ultrafiltration membranes for dairy processing: characterization, performance and durability
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9916171108701831

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