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Xinfeng Wu,Zehui Duan,Ying Wang,Yuan Gao,Kai Sun,Runhua Fan,Xiaofeng Li 한국섬유공학회 2019 Fibers and polymers Vol.20 No.9
An interpenetrating polymer networks (IPNs) based on the anhydride-cured cycloaliphatic epoxy and the trifunctionalacrylate resin cross-linked by peroxide was modified by incorporation of organic montmorillonites (OMMTs) andscrap leather fibers (SLFs). OMMTs and SLFs were introduced into IPNs via a violently mechanical stirring technique whichprovided a very well-dispersed phase of OMMTs and SLFs in matrix. Non-isothermal curing behaviors of IPNs/OMMTs/SLFs composites were investigated by means of the differential scanning calorimeter (DSC). The results of DSC testsshowed that the introduction of OMMTs and SLFs into IPNs accelerated the curing reaction of epoxy systems. In comparisonwith the case of the pristine IPNs, the thermal stability properties, the glass transition temperature, mechanical properties ofIPNs/OMMTs/SLFs composites were markedly enhanced. A desirable toughening-strengthening balance of the compositeshad been obtained at 5 pbw(parts by weight) of OMMTs and 0.5 pbw of SLFs. Significant improvements in performances ofIPNs/OMMTs/SLFs composites obtained through the addition of OMMTs and SLFs in IPNs matrix were associated withtheir good co-reinforcement and co-dispersion effects. The macroscopic properties of the composites were found to bestrongly dependent on their concentrations, components, dispersion, and the resulted morphological structures.