Functionalization of halloysite nanotubes with polyethyleneimine and various ionic liquid forms with antimicrobial activity

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dc.authoridŞahiner, Mehtap / 0000-0001-8666-7954
dc.authoridSağbaş Suner, Selin / 0000-0002-3524-0675
dc.authoridŞahiner, Nurettin / 0000-0003-0120-530X
dc.authoridAkçalı, Alper / 0000-0003-0325-886X
dc.contributor.authorSağbaş Suner, Selin
dc.contributor.authorŞahiner, Mehtap
dc.contributor.authorAlper Akçalı
dc.contributor.authorŞahiner, Nurettin
dc.date.accessioned2025-01-27T20:22:48Z
dc.date.available2025-01-27T20:22:48Z
dc.date.issued2020
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractHalloysite nanotube (HNT), a natural clay, was modified with branched polyethyleneimine (PEI) to form PEI-HNT using epichlorohydrin (ECH) as coupling agent, then protonated with HCl to obtain H-PEI-HNTs providing [NH3](+)[Cl](-) functionality for potential antimicrobial properties. Upon PEI modification, zeta potential value of HNTs was increased to +37.3 mV from -34.5 mV and to +41.1 mV for H-PEI-HNTs. Only 1.87 wt % H-element in HNT was increased to 3.03 wt % upon PEI modification along with newly generated elements of N and C at 2.99 and 9.93 wt %, respectively. Moreover, ionic liquid (IL) forms of HNTs with [NH3](+)[N(CN)(2)](-), [NH3](+)[PF6](-) and [NH3](+)[BF4](-) functionality were generated via anion exchange of H-PEI-HNTs with sodium dicyanamide (SDC), ammonium hexafluorophosphate (AHFP), and sodium tetrafluoroborate (STFB). The antimicrobial properties of the modified, protonated, and IL forms of HNTs were determined via macro dilution, diffusion and agar screening tests against Escherichia coli ATCC 8739, Pseudomonas aeruginosa ATCC 10145, Bacillus subtilis ATCC 6633, Staphylococcus aureus ATCC 6538 strains, and Candida albicans ATCC 10231 strains. It was found that H-PEI-HNTs possesses potent antimicrobial effect compared with the other forms of HNTs with 2-4 mg mL(-1) MIC and 8-16 mg mL(-1) MBC values via the macro dilution method. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48352.
dc.description.sponsorshipScientific Research Commission of Canakkale Onsekiz Mart University (COMU BAP) [TSA-2017-1301]
dc.description.sponsorshipThis work is supported by the Scientific Research Commission of Canakkale Onsekiz Mart University (COMU BAP, TSA-2017-1301).
dc.identifier.doi10.1002/app.48352
dc.identifier.issn0021-8995
dc.identifier.issn1097-4628
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85070706462
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1002/app.48352
dc.identifier.urihttps://hdl.handle.net/20.500.12428/22032
dc.identifier.volume137
dc.identifier.wosWOS:000478978100001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofJournal of Applied Polymer Science
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectbiological applications of polymers
dc.subjectclay
dc.subjectcoatings
dc.subjectcomposites
dc.subjectsurfaces
dc.titleFunctionalization of halloysite nanotubes with polyethyleneimine and various ionic liquid forms with antimicrobial activity
dc.typeArticle

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