Add time:09/10/2019         Source:sciencedirect.com

This chapter introduces renewable diphenolic acid (DPA) as a potential “green” candidate to displace bisphenol A (BA) (which has recently shown links to serious human health concerns) as a starting material for the synthesis of new high performance polybenzoxazine materials. Several approaches have been developed to explore different applications of these materials starting from the synthesis of benzoxazine monomers derived from DPA. The use of fiberglass as a reinforcement agent of DPA/benzoxazine mixtures and for the preparation of high performance flame retardant polybenzoxazine mixtures using a phosphazene-diphenolic acid derivative, and carbon nanotube/polybenzoxazine nanocomposites using a convenient and solventless method has been contemplated. Moreover, the preparation and characterization of rigid polybenzoxazine foams using a DPA-based benzoxazine and their corresponding phosphorus-based flame retardent foams are also carried out. Using analytical tools, mathematical models are proposed for fitting the density and mechanical properties of some foams in terms of the foaming variables.

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