Polyhedral oligomeric silsesquioxane-based hybrid networks obtained via thiol-epoxy click chemistry

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buir.contributor.authorUyar, Tamer
buir.contributor.orcidUyar, Tamer|0000-0002-3989-4481
dc.citation.epage411en_US
dc.citation.issueNumber6en_US
dc.citation.spage405en_US
dc.citation.volumeNumber26en_US
dc.contributor.authorBekin Acar, S.en_US
dc.contributor.authorOzcelik, M.en_US
dc.contributor.authorUyar, Tameren_US
dc.contributor.authorTasdelen, M. A.en_US
dc.date.accessioned2018-04-12T11:13:39Z
dc.date.available2018-04-12T11:13:39Z
dc.date.issued2017en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractA series of hybrid networks based on polyhedral oligomeric silsesquioxane (POSS) were prepared by thiol-epoxy click reaction using commercially available octakis-glycidyl-POSS (G-POSS), trimethylolpropane triglycidyl ether, and trimethylolpropane tris(3-mercaptopropionate) as monomers. The click reaction was simply catalyzed by lithium hydroxide which proceeded readily at ambient conditions in very good yields. The incorporation of G-POSS into the network was clearly determined by transmission electron microscopy, FTIR, and 1H-NMR spectroscopy techniques performed with a model study using 1-butane thiol and G-POSS molecules. The homogeneous distribution of G-POSS up to 5 wt% in the hybrid network was apparently confirmed by morphological investigations. By increasing G-POSS content higher than 5 wt%, the heterogeneous dispersion of G-POSS was determined from the tensile strength measurements. The significant decrease in tensile strength was possible due to the agglomeration of G-POSS. On the other hand, thermal properties of hybrid networks were compared together by thermogravimetric analyses, where all samples exhibited one-step degradation in the range of 220–500 °C. The thermal decomposition of hybrid network led to complete degradation of the organic part and favored the formation of stable carbonaceous and inorganic residues as char. Thus, the char yields of hybrid networks were increased to 6.2, 7.8, 10.1, 12.7, and 15.1% by G-POSS loadings from 0 to 15 wt%. This improvement was also a proof of the incorporation of G-POSS into the hybrid networks that resulted in high heat-resistant POSS-based hybrid networks compared to a sample without G-POSS.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T11:13:39Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2017en
dc.identifier.doi10.1007/s13726-017-0529-xen_US
dc.identifier.issn1026-1265
dc.identifier.urihttp://hdl.handle.net/11693/37446
dc.language.isoEnglishen_US
dc.publisherSpringeren_US
dc.relation.isversionofhttps://doi.org/10.1007/s13726-017-0529-xen_US
dc.source.titleIranian Polymer Journal (English Edition)en_US
dc.subjectClick chemistryen_US
dc.subjectHybrid networksen_US
dc.subjectPolyhedral oligomeric silsesquioxanesen_US
dc.subjectThermosetsen_US
dc.subjectThiol-epoxy reactionen_US
dc.subjectDegradationen_US
dc.subjectFourier transform infrared spectroscopyen_US
dc.subjectHigh resolution transmission electron microscopyen_US
dc.subjectNuclear magnetic resonance spectroscopyen_US
dc.subjectOligomersen_US
dc.subjectSynthesis (chemical)en_US
dc.subjectThermogravimetric analysisen_US
dc.subjectThermosetsen_US
dc.subjectTransmission electron microscopyen_US
dc.subject1H NMR spectroscopyen_US
dc.subject3-mercaptopropionateen_US
dc.subjectClick chemistryen_US
dc.subjectHeterogeneous dispersionen_US
dc.subjectHomogeneous distributionen_US
dc.subjectHybrid networken_US
dc.subjectPolyhedral oligomeric silsesquioxanesen_US
dc.subjectThiol-epoxy reactionen_US
dc.subjectTensile strengthen_US
dc.titlePolyhedral oligomeric silsesquioxane-based hybrid networks obtained via thiol-epoxy click chemistryen_US
dc.typeArticleen_US

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