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dc.contributor.authorSeyhan, Abdullah Tuğrul
dc.contributor.authorTanoğlu, Metin
dc.contributor.authorSchulte, Karl
dc.date.accessioned2016-10-26T08:23:00Z
dc.date.available2016-10-26T08:23:00Z
dc.date.issued2009-10
dc.identifier.citationSeyhan, A.T., Tanoǧlu, M., and Schulte, K. (2009). Tensile mechanical behavior and fracture toughness of MWCNT and DWCNT modified vinyl-ester/polyester hybrid nanocomposites produced by 3-roll milling. Materials Science and Engineering A, 523(1-2), 85-92. doi:10.1016/j.msea.2009.05.035en_US
dc.identifier.issn0921-5093
dc.identifier.urihttp://dx.doi.org/10.1016/j.msea.2009.05.035
dc.identifier.urihttp://hdl.handle.net/11147/2329
dc.description.abstractThis study aims to investigate the tensile mechanical behavior and fracture toughness of vinyl-ester/polyester hybrid nanocomposites containing various types of nanofillers, including multi- and double-walled carbon nanotubes with and without amine functional groups (MWCNTs, DWCNTs, MWCNT-NH2 and DWCNT-NH2). To prepare the resin suspensions, very low contents (0.05, 0.1 and 0.3 wt.%) of carbon nanotubes (CNTs) were dispersed within a specially synthesized styrene-free polyester resin, conducting 3-roll milling technique. The collected resin stuff was subsequently blended with vinyl-ester via mechanical stirring to achieve final suspensions prior to polymerization. Nanocomposites containing MWCNTs and MWCNT-NH2 were found to exhibit higher tensile strength and modulus as well as larger fracture toughness and fracture energy compared to neat hybrid polymer. However, incorporation of similar contents of DWCNTs and DWCNT-NH2 into the hybrid resin did not reflect the same improvement in the corresponding mechanical properties. Furthermore, experimentally measured elastic moduli of the nanocomposites containing DWCNTs, DWCNT-NH2, MWCNTs and MWCNT-NH2 were fitted to Halphin-Tsai model. Regardless of amine functional groups or content of carbon nanotubes, MWCNT modified nanocomposites exhibited better agreement between the predicted and the measured elastic moduli values compared to nanocomposites with DWCNTs. Furthermore, Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM) were used to reveal dispersion state of the carbon nanotubes within the hybrid polymer and to examine the CNT induced failure modes that occurred under mechanical loading, respectively. Based on the experimental findings obtained, it was emphasized that the types of CNTs and presence of amine functional groups on the surface of CNTs affects substantially the chemical interactions at the interface, thus tuning the ultimate mechanical performance of the resulting nanocomposites.en_US
dc.description.sponsorshipTÜBİTAK of Turkey and JULİCH of Germanyen_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.isversionof10.1016/j.msea.2009.05.035en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subject3-Roll millingen_US
dc.subjectFracture toughnessen_US
dc.subjectTensile behavioren_US
dc.subjectCarbon nanotubesen_US
dc.subjectTransmission Electron Microscopyen_US
dc.titleTensile mechanical behavior and fracture toughness of MWCNT and DWCNT modified vinyl-ester/polyester hybrid nanocomposites produced by 3-roll millingen_US
dc.typearticleen_US
dc.contributor.authorIDTR30837en_US
dc.contributor.iztechauthorTanoğlu, Metin
dc.relation.journalMaterials Science and Engineering Aen_US
dc.contributor.departmentIzmir Institute of Technology. Mechanical Engineeringen_US
dc.identifier.volume523en_US
dc.identifier.issue1-2en_US
dc.identifier.startpage85en_US
dc.identifier.endpage92en_US
dc.identifier.wosWOS:000270632900014
dc.identifier.scopusSCOPUS:2-s2.0-68949173943
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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