Polycyanurates and Polycarbonates Based on Eugenol: Alternatives to Thermosetting and Thermoplastic Polymers Based on Bisphenol A.

摘要

Outline: Eugenol Polycyanurates: Low Moisture Uptake. Eugenol Polycarbonates, Flexible Backbone. Eugenol Polycyanurate Toughened with Eugenol Polycarbonate. High Compatibility. Summary: The naturally occurring substance eugenol was successfully converted to both a thermosetting monomer (cyanate ester) and a thermoplastic polycarbonate. The decomposition of the cured cyanate ester yielded a significant quantity of eugenol, demonstrating both an interesting possibility for regeneration of monomer at the end of service as well as an alternative to generation of Bisphenol A. The physical properties of both the cured cyanate ester network as well as the polycarbonate were in line with expectations based on the chemical structure. The high level of chemical similarity between the cyanate ester and the polycarbonate appears to have led to very high compatibility, making possible the formation of a toughened thermosetting resin by homogeneous incorporation of thermoplastic.