Investigation of mechanical properties of coumarin-based light-responsivethermoset polyurethane

In this study a light-responsive thermoset polyurethane (PU) with caster oil as a chain extenderand cross-linker and coumarin as a light-responsive agent was synthesized. The chemical structureof the resulting polyurethane was confirmed by Fourier-transform infrared (FTIR) spectroscopy.Tensile test was used to determine the effect of UV light exposure on its mechanical properties.Finally the gel content test was used to examine the effect of UV light exposure on the PU degree ofcrosslinking.

کلیدواژه ها:

Light-responsive ، Thermoset polyurethane ، Mechanical properties ، Coumarin ، Caster oil