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Preparation and application of stimuli-responsive PET TeMs: RAFT graft block copolymerisation of styrene and acrylic acid for the separation of water–oil emulsions

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dc.contributor.author Muslimova, Indira B.
dc.contributor.author Zhumanazar, Nurdaulet
dc.contributor.author Melnikova, Galina B.
dc.contributor.author Yeszhanov, Arman B.
dc.contributor.author Zhatkanbayeva, Zhanna K.
dc.contributor.author Chizhik, Sergei A.
dc.contributor.author Zdorovets, Maxim V.
dc.contributor.author Güvend, Olgun
dc.contributor.author Korolkov, Ilya V.
dc.date.accessioned 2024-09-24T07:51:48Z
dc.date.available 2024-09-24T07:51:48Z
dc.date.issued 2024
dc.identifier.issn 20462069
dc.identifier.other DOI 10.1039/d4ra02117g
dc.identifier.uri http://rep.enu.kz/handle/enu/16874
dc.description.abstract Stimuli-responsive membranes play an important role in the fields of biomedicine, food and chemical industries, and environmental applications, including separation of water-oil emulsions. In this study, we present a method to fabricate pH-sensitive membranes using UV-initiated RAFT graft copolymerization of styrene (ST) and acrylic acid (AA) on poly(ethylene terephthalate) (PET) track-etched membranes (TeMs). The optimization of polymerization conditions led to successful grafting of polystyrene (PS) and poly(acrylic acid) (PAA) onto PET TeMs, resulting in membranes with stable hydrophobicity and pH change responsiveness. The membranes show a contact angle of 65° in basic environments (pH 9) and 97° in acidic environments (pH 2). The membranes were characterized by atomic force microscopy (AFM), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX), thermogravimetric analyses (TGA), Fourier transform infrared spectroscopy (FTIR), contact angle (CA) methods. The PET TeMs-g-PS-g-PAA exhibited good performance in separating water-oil emulsions with a high efficiency of more than 90% and flux for direct chloroform-water 2500 L m−2 h−1 and reverse emulsions of benzene-water 1700 L m−2 h−1. This method of preparing stimuli-responsive membranes with controlled wettability and responsiveness to environmental pH provides versatility in their use in separating two types of emulsions: direct and reverse ru
dc.language.iso en ru
dc.publisher RSC Advances ru
dc.relation.ispartofseries Том 14, Выпуск 20, Страницы 14425 - 14437;
dc.title Preparation and application of stimuli-responsive PET TeMs: RAFT graft block copolymerisation of styrene and acrylic acid for the separation of water–oil emulsions ru
dc.type Article ru


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