UV-PHOTOCHEMICAL REACTION ON THE SOLID SURFACEOF POLYVINYL CHLORIDE USING X-RAY PHOTOELECTRON SPECTROSCOPY
X-射线光电子能谱(ESCA)研究聚氯乙烯固体表面的紫外光分解反应

In the present article, the changes of surface component induced by photodegradation in different environment have been examined by means of ESCA. It may be inferred from ESCA data, that the primary process in the photodegradation of PVC in atmosphere and at room temperature is the photooxdation, while in inert gas cleavage of C-Cl bond occurs accompanied with the elimination of HCl and the formation of polyene sequences of different lengths. Therefore, the photodegradation of PVC is dependent on the environment to which PVC is exposed.