Asymmetric polyethersulfone membranes modified with polyelectrolyte complexes: Morphology, thermal analysis and transport properties

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorColorado School of Mines-
Autor(es): dc.creatorda Silva Vale, Rayane-
Autor(es): dc.creatorda Silva, Vanessa Bezerra-
Autor(es): dc.creatorContiero, Jonas-
Autor(es): dc.creatorKnauss, Daniel M.-
Autor(es): dc.creatorParanhos, Caio Marcio-
Data de aceite: dc.date.accessioned2025-08-21T19:02:20Z-
Data de disponibilização: dc.date.available2025-08-21T19:02:20Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3144/expresspolymlett.2024.18-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/307451-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/307451-
Descrição: dc.descriptionMixing additives into a polymeric membrane constitutes an easy way to change their properties. Polyelectrolyte complexes (PECs) (polyelectrolytes combined via electrostatic interaction) are good materials for this due to their hy-drophilicity, tunable surface charge, and stable structure. In the present study, membranes containing PECs were obtained using three methodologies: complexation before, after, and during membrane formation. The chosen polyelectrolytes were 4-fluorophenyl sulfone-terminated poly(diallylpiperidinium hexafluorophosphate) and sulfonated poly(ethylene terephtha-late); the polymeric matrix was polyethersulfone. Fourier transform infrared spectroscopy confirmed the presence of PECs in the membranes. Scanning electron microscopy images of the membranes showed a dense skin and porous sub-layer, with variations in the thickness of the dense layer influenced by the presence of polyelectrolytes. The increase in water vapor permeability indicated that the complexes alter the hydrophilic profile of the membranes. The thermogravimetric curves showed different thermal behaviors depending on the interaction between the polyelectrolytes. All membranes demonstrated enhanced retention of Remazol red dye during filtration, with retention rates exceeding 95%. Notably, the Blend membrane exhibited the highest retention (over 98%) of the dye.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute for Research in Bioenergy, SP-
Descrição: dc.descriptionPolymer Laboratory Department of Chemistry Federal University of São Carlos, Rodovia Washington Luís, Km 235, s/n – Jardim Guanabara, SP-
Descrição: dc.descriptionDepartment of Chemistry Colorado School of Mines-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute for Research in Bioenergy, SP-
Formato: dc.format245-259-
Idioma: dc.languageen-
Relação: dc.relationExpress Polymer Letters-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectphase inversion-
Palavras-chave: dc.subjectpoly(diallylpiperidinium)-
Palavras-chave: dc.subjectpolymeric membrane-
Palavras-chave: dc.subjectRemazol red dye-
Palavras-chave: dc.subjectsulfonated poly(ethylene terephthalate)-
Título: dc.titleAsymmetric polyethersulfone membranes modified with polyelectrolyte complexes: Morphology, thermal analysis and transport properties-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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