Mechanical, electrical, and melt flow properties of polyurethane elastomer/surface-modified carbon nanotube composites

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dc.authoridKanbur, Yasin/0000-0003-3996-458X
dc.authoridAbaci, Ufuk/0000-0002-7100-3714
dc.contributor.authorTayfun, Umit
dc.contributor.authorKanbur, Yasin
dc.contributor.authorAbaci, Ufuk
dc.contributor.authorGuney, Hasan Yuksel
dc.contributor.authorBayramli, Erdal
dc.date.accessioned2024-09-29T16:04:56Z
dc.date.available2024-09-29T16:04:56Z
dc.date.issued2017
dc.departmentKarabük Üniversitesien_US
dc.description.abstractCarbon nanotube-reinforced polyurethane elastomer composites were prepared by melt-mixing. Nitric acid oxidation and silanization were applied to carbon nanotube surfaces to achieve better interfacial interactions with polyurethane elastomer. Tensile and hardness tests, differential scanning calorimetry, melt flow index test, dielectric measurements, and morphological studies of composites were reported. The best results were obtained for surface-modified carbon nanotubes containing composites with lower loading levels. Addition of carbon nanotubes leads to almost two-fold increase in strain and modulus compared to pristine polyurethane elastomer. Tensile strength of composites was also improved by inclusion of carbon nanotubes. However, strength values drop down with increasing carbon nanotube content. Shore hardness increased with the inclusion of modified carbon nanotube to polyurethane elastomer while pristine carbon nanotube caused remarkable decrease in hardness of polyurethane elastomer. Relatively higher melting points and slightly lower glass transition temperatures were observed for carbon nanotube-loaded composites compared to polyurethane elastomer because of plasticizing effect of carbon nanotube. Incorparation of carbon nanotube to polyurethane elastomer matrix caused reduction in melt flow index values due to formation of agglomarates, and n the contrary, surface modifications of carbon nanotube exhibited increase in melt flow index thanks to enhanced interfacial interactions between carbon nanotube and polyurethane elastomer. Significant increase in dielectric constant of composites was observed. Better dispersion of surface modified carbon nanotubes into polyurethane elastomer was also concluded from SEM micrographs of composites.en_US
dc.identifier.doi10.1177/0021998316666158
dc.identifier.endpage1996en_US
dc.identifier.issn0021-9983
dc.identifier.issn1530-793X
dc.identifier.issue14en_US
dc.identifier.scopus2-s2.0-85020070843en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage1987en_US
dc.identifier.urihttps://doi.org/10.1177/0021998316666158
dc.identifier.urihttps://hdl.handle.net/20.500.14619/6412
dc.identifier.volume51en_US
dc.identifier.wosWOS:000402456700005en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSage Publications Ltden_US
dc.relation.ispartofJournal of Composite Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCarbon nanotubeen_US
dc.subjectpolyurethanesen_US
dc.subjectelastomersen_US
dc.subjectextrusionen_US
dc.subjectsurface modificationen_US
dc.subjectpolymer-matrix compositesen_US
dc.titleMechanical, electrical, and melt flow properties of polyurethane elastomer/surface-modified carbon nanotube compositesen_US
dc.typeArticleen_US

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