Abstract
A novel unsaturated co-ester (co-UE) macromonomer containing both maleates and acrylates was synthesized from tung oil (TO) and its chemical structure was characterized by FT-IR, 1H NMR, 13C NMR, and gel permeation chromatography (GPC). The monomer was synthesized via a new synergetic modification of TO, by introducing maleic groups first and acrylic groups subsequently onto TO molecules. The influence of experimental factors on thermomechanical properties of the cured bioresins was evaluated to better understand structure–property relationships of the biomaterials and optimize experimental conditions. The obtained TO-based co-UE monomer possessed a highly polymerizable C═C functionality, consequently resulting in rigid bioplastics with high cross-link densities (νe) and excellent mechanical properties. For instance, the bioplastic prepared under the optimal synthesis conditions demonstrated a νe of 4.03 × 103 mol/m3, storage modulus at 25 °C of 2.40 GPa, and glass transition temperature (Tg) of 127 °C, a...
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