Highlights ► Thermal and photo degradation of PVAc paint samples were studied by Py–GC/MS with double-shot and single-shot techniques. ► Changes of the PVAc paint samples before and after UV ageing were revealed. ► The effects of pigments and ageing status to the degradation of PVAc paint samples were illustrated.

中文翻译：

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Py-GC/MS对艺术品中使用的聚醋酸乙烯酯涂料的光化学降解研究

亮点 ► PVAc 涂料样品的热降解和光降解采用 Py-GC/MS 和双次和单次技术进行了研究。► 揭示了 PVAc 涂料样品在 UV 老化前后的变化。► 说明了颜料和老化状态对 PVAc 涂料样品降解的影响。