Abstract
AbstractCamelina oil contains nearly 90% unsaturated fatty acids and can be modified into functional monomers and polymers for value‐added industrial applications. In this study, we synthesized epoxidized camelina oil (ECO) and acrylated epoxidized camelina oil (AECO) and evaluated their potential applications as ultraviolet (UV)‐curable clear films and wood coatings. ECO and AECO were characterized using Fourier transform infrared spectroscopy and 1H nuclear magnetic resonance. Curing kinetics, thermal, mechanical, and coating properties of the polymers were investigated. The peak curing time of ECO was 0.51 min and that of AECO was only 0.09 min under UV intensity of 50 mW cm−2. Polymerized AECO (pAECO) exhibited higher glass transition temperature, mechanical strength (storage modulus, Young's modulus, and tensile strength), crosslink density, and gloss value compared with polymerized ECO (pECO). Both pAECO and pECO coatings showed good pencil hardness (6H) and strong adhesion to wood substrates (5B, with 0% chipping off during crosscut tape adhesion test). Compared with corresponding soybean oil polymers, pAECO and pECO had better thermal and mechanical properties, respectively, attributed to their higher monomer functionalities. ECO and AECO are promising candidates for UV‐curable coating applications, which adds value to camelina oilseed feedstock.
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