Abstract
Indole based epoxy resin(INRE) was synthesized by the reaction of epichlorohydrin and indole oligomer which was obtained by polycondensation reaction of indole and paraformaldehyde. In order to evaluate the effect of indole structure on the thermal properties, o-cresol novolac type epoxy resin was used as reference. The cured polymer of INRE with phenol novolac showed glass transition temperature of 177.8℃ in DMA measurement which was comparable with 184.1℃ of the OCNE polymer, while showed lower storage modulus in the rubbery states. Moisture absorption was 0.15wt% lower than that of the OCNE polymer. This result might be attributed to the aromatic structure and lowering high polar ether moiety in the cured polymer compared with that derived from glycidyl ether.
