FORMULATION OF HIGH-QUALITY UV-CURABLE COATING CONTAINING RENEWABLE REACTIVE DILUENTS FOR WOOD PROTECTION Formulasi Salutan Awetan-UV Berkualiti Tinggi yang Mengandungi Diluen Reaktif yang Boleh Diperbaharui untuk Perlindungan Kayu

Fine quality coating materials for a variety of surfaces using environmentally friendly substrates are continuously in demand. A large proportion of acrylate derivatives, which are toxic and hazardous, were found in most of the coating formulations. Many efforts have been done to replace acrylate derivatives with other materials derived from renewable resources. In this work, several formulations of wood coating containing different composition of epoxy acrylate and enzymatically synthesized epoxide from soybean oil or wax esters mixture of dioleyl adipate and 1,5-pentanediol diricinoleate were prepared. The formulations were subjected to performance evaluations including gel content, pendulum hardness, and surface test. Formulation 1 containing 85 epoxy acrylate and 15 epoxidation from soybean oil exhibited the highest gel content (79.5), pendulum hardness (61.02) and surface resistance to different types of liquid. Increase in surface resistance was observed using a formulation containing 85 epoxy acrylate and a mixture of 1,5-pentanediol diricinoleate and dioleyl adipate (1:1, w/w; 15). Therefore, these reduced acrylate formulations showed good potential in the development of high-quality UV-curable wood coating. © 2022, Malaysian Society of Analytical Sciences. All rights reserved.