Bekin Acar, S.Ozcelik, M.Uyar, TamerTasdelen, M. A.2018-04-122018-04-1220171026-1265http://hdl.handle.net/11693/37446A 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.EnglishClick chemistryHybrid networksPolyhedral oligomeric silsesquioxanesThermosetsThiol-epoxy reactionDegradationFourier transform infrared spectroscopyHigh resolution transmission electron microscopyNuclear magnetic resonance spectroscopyOligomersSynthesis (chemical)Thermogravimetric analysisThermosetsTransmission electron microscopy1H NMR spectroscopy3-mercaptopropionateClick chemistryHeterogeneous dispersionHomogeneous distributionHybrid networkPolyhedral oligomeric silsesquioxanesThiol-epoxy reactionTensile strengthArticle10.1007/s13726-017-0529-x