Abstract
Alicyclic epoxy/acrylic interpenetrating polymer networks (IPNs) were prepared by the UV-irradiated polymerization of 3, 4-epoxycyclohexylmethyl 3, 4-epoxycyclohexane carboxylate (Celoxide 2021) and 2-ethylhexyl acrylate (2EHA) using bis- [4- (diphenylsulfonio) phenyl] sulfide bis-hexafluoroantimonate as a photoinitiator. Celoxide 2021 dimethacrylate (crosslinker of acrylate) and Celoxide 2021 methacrylate (grafting agent) were prepared from the reaction of Celoxide 2021, methacrylic acid, and potassium methacrylate under the phase transfer conditions.
Simultaneous IPNs were opaque owing to the phase separation and grafting IPNs were transparent. Such compatibilities of IPNs were also studied by scanning electronic microscopy. The mechanical properties of IPNs were measured by tensile test. Grafting IPNs composed of epoxy/2EHA (80/20 wt ratio) were more flexible than the parent epoxy resin photocured.The thermal properties of IPNs were measured by the dynamic mechanical analysis.
