Synthesis and Properties of Novel Polymer from Plant-based Curcumin

Abstract

Polyurethane CU-LTI was synthesized by curcumin and lysine triisocyanate. The structural analysis of the obtained CU-LTI was measured by FT-IR spectrum. Peaks attributed to N-H groups and C＝O groups were confirmed. From the ultraviolet-visible absorption spectrum of CU-LTI, the absorption peak at 450 nm was confirmed. In the fluorescence spectrum of CU-LTI, an emission peak at 520 nm was confirmed. From the result of TG measurement, the starting temperature of thermogravimetric loss of polyurethane was about 200℃. The glass transition temperature of CU-LTI was 70℃. The stress-strain curve shows that polyurethane is relatively soft and stretchable.