Coating industries expanded the use of petroleum-based commodities for better coating properties, which is rising the pollution concern. In this research, bio-based material such as limonene was used to deplete the usage of petroleum raw-material for coating. Limonene-polyol was prepared through a thiol-ene reaction and then methacrylate with methacrylic anhydride via esterification reaction to proceed further for UV curing formulation. As per FT-IR examination, hydroxyl functional groups held by the structure of limonene were transfigured into the corresponding methacrylate and by analysis of C=C peak after curing, cure percentage was noticed near to 92%. The methacrylated limonene-polyol was formulated for UV curing through the addition of a photoinitiator and an alternate measure of cross-linker, where this combination was applied to a steel surface and relieved under UV light to give a cross-linked formation, which gives solid surface grip and scratch-resistant coating. The coated material was also characterized by FT-IR, thermal, tensile, flexural test whereas results give strong tensile strength about 79 MPa by increasing the 30% of the amount of methacrylated limonene-polyol and banding modulus (flexural) observed 38 GPa. Alter the amount of methacrylated limonene-polyol was also tested. This research presents a convenient synthesis procedure for coating applications by using bio-based material at a lower cost.
Chaudhary, Sahilkumar; Kote, Prashant; and Gupta, Ram, "Bio-based coating of modified limonene via UV light technology" (2022). Posters. 3.