Polybenzoxazines are currently drawing lot of interest in the field of materials science and more particularly as thermosetting materials and related (nano)composite materials. Based on a remarkable balance of material properties, combining both the specific advantages of traditional epoxy and phenolic resins, polybenzoxazines appear as unique candidates for the production of high-performance materials, particularly when they are filled with nanoparticles like carbon nanotubes for instance. One of the most relevant characteristic features of benzoxazines relies on the great versatility of the monomer molecular design as they are readily synthesized by a Mannich-like condensation between an amine, a phenol, and formaldehyde.<br/>This contribution aims at investigating recent developments and trends in the field of advanced polybenzoxazine-based thermosetting resins. The versatility of the benzoxazine structure and composition as well as the large choice of possible combinations of reagents allow for the preparation of a very wide range of monomers with a special appeal for bio-based or renewable organic compounds in order to prepare a novel family of sustainable biopolymers. For instance, bio-based polybenzoxazines have been produced form cardanol, eugenol, guaiacol, arbutin, resorcinol, chavicol.<br/>The design of the monomer stucture is thus of prime interest, not only to control the polymerization but also to promote the development of special interactions with selected nanofillers in order to take full advantage of their excellent intrinsic properties and to pave the way to the preparation of nanohybrids with remarkable properties.<br/>Interestingly enough, high performance polybenzoxazine/multi-wall carbon nanotube nanocomposites have been synthesized as well, displaying unexpected thermal and physical properties, particularly when applied as nanocoatings for metallic substrates.

Biobased thermosetting resins: From (co)polymerization of benzoxazines to nanocomposites

254th National Meeting (2017)

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