Bioinspired Design Provides High-Strength Benzoxazine Structural Adhesives.

ABSTRACT: A synthetic strategy to incorporate catechol functional groups into benzoxazine thermoset monomers was developed, leading to a family of bioinspired small-molecule resins and main-chain polybenzoxazines derived from biologically available phenols. Lap-shear adhesive testing revealed a polybenzoxazine derivative with greater than 5 times improved shear strength on aluminum substrates compared to a widely studied commercial benzoxazine resin. Derivative synthesis identified the catechol moiety as an important design feature in the adhesive performance and curing behavior of this bioinspired thermoset. Favorable mechanical properties comparable to commercial resin were maintained, and glass transition temperature and char yield under nitrogen were improved. Blending of monomers with bioinspir

SUBMITTER: Higginson CJ 

PROVIDER: S-EPMC6772131 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature