study of photodecomposition rate constant and surface morphology of pvc films embedded with tin(iv) complexes

Polymers became irreplaceable components that enter all industries due to their exceptional properties and low costs. as there are many polymers, the production quantities differ from one type to another depending on the offered characteristics; among them, poly (vinyl chloride) (pvc) was widely used in many applications. however, it undergoes many harmful changes when exposed to ultraviolet light. this paper concentrates on calculating the photodecomposition rate constant and surface morphology of pvc films before and after filling tin (iv) complexes (1-3) as photo stabilizers. the photodecomposition rate constant was determined to indicate tin (iv) complexes' impact on pvc films after 300 h exposure to uv irradiation. the surface morphology of pvc films was investigated by field emission scanning electron microscopy (fe-sem) and fourier-transform infrared spectroscopy (ftir). however, the photodecomposition rate constant was calculated along with the irradiation time up to 300 hours for the plain and modified pvc films. according to the result, organotin compounds and schiff bases were used as photo stabilizers. in this case, the photodegradation was significantly decreased.