Preparation and application of radiation curable trimethylolpropane trioleate-based epoxy acrylate Cheong Mei Yee, Lim Wen Huei, Zafarizal Aldrin Azizul Hasan Advanced Oleochemical Technology Division, Malaysian Palm Oil Board (MPOB), Malaysia. Trimethylolpropane (TMP) trioleate is part of branched neopentyl polyols used as environmental-friendly biolubricant. This project is developed to diversify the use of TMP trioleate. A new type of vegetable oil-based UV-curable oligomers from TMP trioleate has been synthesized and used in the coating formulation. The trimethylolpropane (TMP) trioleate was epoxidised and further reacted with acrylic acid to make acrylated TMP trioleate. The acrylation reaction was monitored throughout the reaction by dwindling acid value and oxirane oxygen content. The obtained acrylated TMP trioleate was characterized by FTIR and NMR spectroscopy to ensure there was a ring-opening reaction and the degree of acrylation obtained was 50.21%. The acrylated molecule is able to participate in free ‐ radical polymerization reactions to form high molecular weight polymers. The acrylated TMP trioleate was applied for UV free radical polymerization with monomer, trimethylolpropane triacrylate (TMPTA) and photoinitiator Irgacure 184 in various ratios. The acrylated TMP trioleate blends with TMPTA resulted in radiation cured coating with good crosslink density as indicated by the gel content, thermal and mechanical properties from glass transition temperature, T g and Konig Pendulum hardness. These biobased UV- curable oligomers have potential uses in applications such as composites, adhesives, and surface coating. References 1. Childers, M.I., Longo, J.M., Van Zee, N.J., Lapointe, A.M. and Coates, G.W. (2014). Stereoselective epoxide polymerization and copolymerization. Chem. Rev., 114 (16), pp. 8129–8152. 2. Ding, C. and Matharu, A. S. (2014). Recent developments on biobased curing agents: review of their preparation and use. ACS Sustain. Chem. Eng., 2 (10), pp. 2217–2236. 3. Fertier, L., Koleilat, H., Stemmelen, M., Giani, O., Joly-Duhamel, C., Lapinte, V. and Robin, J.J. (2013). The use of renewable feedstock in UV-curable materials—A new age for polymers and green chemistry. Prog. Polym. Sci. 38 (6), pp. 932–962. 4. Ma, S., Jiang, Y., Liu, X., Fan, L. and Zhu J. (2014). Bio-based tetrafunctional crosslink agent from gallic acid and its enhanced soybean oil-based UV-cured coatings with high performance. RSC Adv., 4 (44), pp. 23036–23042.
P08
© The Author(s), 2023
Made with FlippingBook Learn more on our blog