Surface activity of amphiphilic cationic pH-responsive poly(4-vinylpyridine) microgel at air/water interface

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dc.authoridYaşar, Alper O. / 0000-0002-1192-9726
dc.authoridŞahiner, Nurettin / 0000-0003-0120-530X
dc.contributor.authorŞahiner, Nurettin
dc.contributor.authorAtta, Ayman M.
dc.contributor.authorYaşar, Alper O.
dc.contributor.authorAl-Lohedan, Hamad A.
dc.contributor.authorEzzat, Abdelrahman O.
dc.date.accessioned2025-01-27T20:31:32Z
dc.date.available2025-01-27T20:31:32Z
dc.date.issued2015
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn this study, we report the relation between the surface activity parameters of soft, pH sensitive microgel particles based on cationic poly(4-vinyl pyridine), p(4-VP) for the first time and corroborate the variation of their chemical structures and their concentrations adsorbed at the air-water interface. In this respect, p(4-VP) particles were quaternized by modifying with alkyl bromides of different chain length. Additionally, hydroxyl, amino and nitrile functional group-containing alkyl bromides were used to quaternize the crosslinked p(4-VP) to determine the effect of hydrophilic and hydrophobic groups on the surface activities of the prepared microgels. The chemical structures of the prepared microgel were characterized by Fourier transform infrared spectrometry (FT-IR). The solution behavior was investigated by surface tension technique, scanning electron microscopy (SEM), dynamic light scattering (DLS), and zeta potential measurements. The results indicate that the microgels can spontaneously assemble into spherical-shaped micelle aggregates, with different critical aggregation concentrations (cac), and hydrodynamic diameters from about 500-1000nm at pH 4, 7 and 9, depending on the microgel chemical structure. For the first time, p(4-VP) microgels quaternized with hydroxyethyl bromide showed reduction of surface tension of water using amphiphilic microgels from 72.1 to 31.1 mN/m. (C) 2015 Elsevier B.V. All rights reserved.
dc.description.sponsorshipSurfactant Research Chair, Chemistry Department, College of Science, King Saud University
dc.description.sponsorshipThis project is supported by Surfactant Research Chair, Chemistry Department, College of Science, King Saud University.
dc.identifier.doi10.1016/j.colsurfa.2015.07.035
dc.identifier.endpage655
dc.identifier.issn0927-7757
dc.identifier.issn1873-4359
dc.identifier.scopus2-s2.0-84938087817
dc.identifier.scopusqualityQ1
dc.identifier.startpage647
dc.identifier.urihttps://doi.org/10.1016/j.colsurfa.2015.07.035
dc.identifier.urihttps://hdl.handle.net/20.500.12428/23189
dc.identifier.volume482
dc.identifier.wosWOS:000360411300078
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofColloids and Surfaces A-Physicochemical and Engineering Aspects
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectpH-responsive microgels
dc.subjectSurface activity
dc.subjectPoly(4-vinylpyridine) microgels
dc.titleSurface activity of amphiphilic cationic pH-responsive poly(4-vinylpyridine) microgel at air/water interface
dc.typeArticle

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