本文用X-射线光电子能谱(XPS)研究了聚丙烯膜表层的光氧化产物,得出几种主要氧化产物的相对含量随氧化时间变化的规律并将其与缸外光谱所测结果及文献报道的相比较,证明膜表层光氧化和膜整体光氧化规律有所不同。根据实验结果提出了反应机理。 In this paper, X-ray photoelectron spectroscopy (XPS) was used to study the photooxidation products on the surface of polypropylene film. The relationship between the relative contents of several main oxidation products and the oxidation time was obtained and compared with the results measured in the literature Reported compared to show that the membrane surface photooxidation and the overall pattern of photooxidation of the film is different. According to the experimental results, the reaction mechanism is proposed.