Active surface modification of thermoplastic polyurethane-oleic acid nanocomposite fibers through alkali hydrolysis

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dc.authorid0000-0001-6711-9792
dc.contributor.authorKarahaliloğlu, Zeynep
dc.contributor.authorHazer, Baki
dc.date.accessioned2025-07-11T07:21:31Z
dc.date.available2025-07-11T07:21:31Z
dc.date.issued2025
dc.departmentSabire Yazıcı Fen Edebiyat Fakültesi
dc.description.abstractAlkali hydrolysis is a simple, low-cost, and prominent surface modification method for developing more desirable scaffolds. In the presented study, two distinct concentrations (1 and 3 M) were predetermined for the hydrolysis treatments, and thermoplastic polyurethane (TPU) nanocomposite fibers with varying concentrations of oleic acid (OLE) were exposed. According to the scanning electron microscopy (SEM) images, when naked TPU or nanocomposite fibers showed any morphological changes, the interfacial bonding points of TPU-OLE nanocomposite fibers enhanced in the higher concentrations of hydrolysis solution (1 and 3 M). The average fiber diameter in pure TPU is 0.59 ± 0.04 μm, while after doping with the highest concentration of OLE, the fiber diameter decreased to 0.48 ± 0.03 μm. Additionally, at the highest NaOH and OLE concentrations, the diameter decreased from 0.85 ± 0.02 μm in 3 M/TPU to 0.61 ± 0.04 μm in 3 M/TPU-OLE3. Additionally, the surface hydrophilicity of TPU-OLE fibers was noticeably improved through alkali hydrolysis, compared to the naked TPU approximately by 70%. Furthermore, the surface characterization of fibers revealed that the surface roughness values showed a significant change with increasing alkali concentration, but were not affected by the OLE concentration. All these findings indicate that TPU, whose surface wettability, roughness, and antibacterial response are modified by mercerization and OLE addition, can be safely and successfully used in tissue engineering applications. Highlights: Polyurethane, oleic acid, and NaOH treatment were combined for tissue engineering applications. TPU/OLE nanofiber membranes were prepared by electrospinning. The surface of composite fibrillar membranes was modified alkali hydrolysis. The fiber diameter decreased after NaOH hydrolysis. Alkali hydrolysis improved the surface wettability and antibacterial response.
dc.identifier.doi10.1002/pen.27120
dc.identifier.endpage1906
dc.identifier.issue4
dc.identifier.scopus105001871545
dc.identifier.startpage1890
dc.identifier.urihttps://dx.doi.org/10.1002/pen.27120
dc.identifier.uri00323888
dc.identifier.urihttps://hdl.handle.net/20.500.12451/13256
dc.identifier.volume65
dc.identifier.wosWOS:001419090800001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakScopus
dc.indekslendigikaynakWeb of Science
dc.institutionauthorKarahaliloğlu, Zeynep
dc.institutionauthorid0000-0001-6711-9792
dc.publisherJohn Wiley and Sons Inc
dc.relation.ispartofPolymer Engineering and Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAlkali Treatment
dc.subjectAntibacterial
dc.subjectNanofiber
dc.subjectOleic Acid
dc.subjectThermoplastic Polyurethane
dc.titleActive surface modification of thermoplastic polyurethane-oleic acid nanocomposite fibers through alkali hydrolysis
dc.typeArticle

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