Surface characterization and Remazol Red adsorption by asymmetric polyethersulfone membranes modified by polyelectrolyte complexes

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Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorColorado School of Mines-
Autor(es): dc.creatorda Silva Vale, Rayane-
Autor(es): dc.creatorBezerra da Silva, Vanessa-
Autor(es): dc.creatorMarcio Paranhos, Caio-
Autor(es): dc.creatorContiero, Jonas-
Autor(es): dc.creatorKnauss, Daniel M.-
Data de aceite: dc.date.accessioned2025-08-21T21:51:40Z-
Data de disponibilização: dc.date.available2025-08-21T21:51:40Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-05-10-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/app.55314-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/305355-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/305355-
Descrição: dc.descriptionPolyethersulfone (PES) membranes containing 4-fluorophenyl sulfone-terminated poly(diallylpiperidinium hexafluorophosphate)-sulfonated poly(ethylene terephthalate) polyelectrolyte complexes (PECs) were obtained via phase inversion using three different methods that enabled the complexation of polyelectrolytes (PELs) to occur before, after, and during membrane formation. Atomic force microscopy-infrared spectroscopy analysis revealed varying concentrations of the polyanion depending on the preparation method and confirmed the presence of PECs in the membranes, highlighting an increase in surface roughness. Zeta potential measurements demonstrated positive surface charges for the membrane comprising PES and the polycation. The reduction in zeta potential in PEC membranes corresponded with the neutralization of positive groups by sulfonated poly(ethylene terephthalate. Scanning electron microscopy micrographs depicted surface imperfections in PEC membranes, emphasizing the influence of PECs on membrane surfaces. The water contact angle decreased, indicating increased hydrophilicity in PEC membranes. Additionally, dye adsorption results showcased significant adsorption, with the membranes absorbing at least 60% of Remazol Red from an aqueous solution. Notably, the Blend membrane outperformed others, exhibiting an exceptional adsorption rate exceeding 92%.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionPolymer Laboratory Department of Chemistry Universidade Federal de São Carlos, SP-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute for Research in Bioenergy, SP-
Descrição: dc.descriptionDepartment of Chemistry Colorado School of Mines-
Descrição: dc.descriptionSão Paulo State University (Unesp) Institute for Research in Bioenergy, SP-
Idioma: dc.languageen-
Relação: dc.relationJournal of Applied Polymer Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectphase inversion-
Palavras-chave: dc.subjectpoly (diallyl piperidinium)-
Palavras-chave: dc.subjectpolymeric membranes-
Palavras-chave: dc.subjectsulfonated poly (ethylene terephthalate)-
Título: dc.titleSurface characterization and Remazol Red adsorption by asymmetric polyethersulfone membranes modified by polyelectrolyte complexes-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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