NMR, FTIR AND KINETIC ANALYSES OF POLYURETHANES SYNTHESIZED WITH SUCROSE OF SUGAR CANE, CROTONIC ACID AND POLYCAPROLACTONE

Polyurethanes (PUs) are commonly used in a number of applications including catheter, hospital bedding, surgical material, as well as in a variety of injection molded devices. The PU synthesis is reported due to sucrose, crotonic acid and polycaprolactone (PCL). The PUs synthesized were characterized using nuclear magnetic resonance ( 13 C-NMR) to determine the different spectrum and Fourier transform infrared spectroscopy (FTIR) to analyze the new bands formed and to confirm at 1637 cm -1 the sign of carbonyl group appears, indicating the formation of the urethane group in the different polymerization. Computational chemistry methods can be used to explore the theoretical chemistry behind reactive systems, to compare the relative chemical reactivity of different systems, and, by extension, to predict the reactivity of new systems. The reaction order was determined by means of the simulation with the Hyperkinetic software which corresponded to the first reaction order, because the speed constants are very similar to different periods of time.