AUTHOR=Yang Wen , Xie Yaofeng , Chen Jipeng , Huang Chunmei , Xu Yanlian , Lin Yucai TITLE=Metal Ion-Catalyzed Low-Temperature Curing of Urushiol-Based Polybenzoxazine JOURNAL=Frontiers in Chemistry VOLUME=Volume 10 - 2022 YEAR=2022 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.879605 DOI=10.3389/fchem.2022.879605 ISSN=2296-2646 ABSTRACT=
In this work, urushiol-based polybenzoxazine is cured by the Lewis acid (FeCl3, AlCl3, and CuCl2) at low temperature instead of high thermal curing temperature. The effect of the Lewis acid on structures and properties of the polymers is revealed. The relating urushiol-based benzoxazine monomer (BZ) was synthesized by natural urushiol, formaldehyde, and