Mechanical properties and curing kinetics of bio-based benzoxazine–epoxy copolymer for dental fiber post

Abstract Biocopolymers based on vanillin/fufurylamine–biobenzoxazine (V-fa) and epoxide castor oil (ECO), a bioepoxy, were prepared for application as dental fiber-reinforced composite post. The mechanical thermal properties of the V-fa/ECO biocopolymers assessed with regard to influence ECO content. addition at an amount 20% by weight into poly(V-fa) preserved stiffness, glass transition temperature stability nearly poly(V-fa). Differential scanning calorimetry (DSC) was used examine curing kinetics monomer system different heating rates. To determine activation energy ( E ), experimental data subjected isoconversional methods, namely Flynn–Wall–Ozawa (FWO) Friedman (FR). mixture showed average values 105 kJ/mol 94 kJ/mol. results derived using reaction model in good agreement, demonstrating efficacy FWO method determining parameters. simulated response external applied loads finite-element analysis tooth restored biocopolymer post similar stress field commercial fiber Therefore, findings this work, it is evident that bio-based benzoxazine/epoxy copolymer possesses great potential be Graphical