Phenolic materials via ring‐opening polymerization: Synthesis and characterization of bisphenol‐A based benzoxazines and their polymers

TLDR

Compounds with bifunctional benzoxazine groups form crosslinked phenolic materials via a ring‑opening reaction. The study discusses synthesis, composition, and structural analysis of bisphenol‑A based benzoxazine precursors. These bisphenol‑A benzoxazines provide greater flexibility than conventional novolac or resole resins, cure without by‑products, and yield polymers with glass transition temperatures above 200 °C and excellent mechanical integrity. © 1994 John Wiley & Sons, Inc.

Abstract

Abstract Compounds with bifunctional benzoxazine groups in their molecular structures form crosslinked structures characteristic of phenolic materials through a ring‐opening reaction mechanism. This family of compounds offers greater flexibility than conventional novolac or resole resins in terms of molecular design. It is also superior to conventional phenolic resin in process control since it releases no by‐product during curing reactions. The materials thus obtained exhibit excellent mechanical integrity with glass transition temperatures over 200°C. The synthesis, composition, and structural analysis of precursors based on bisphenol‐A are discussed herein. © 1994 John Wiley & Sons, Inc.