稀土复合光敏剂在可焚烧可降解聚乙烯中的应用研究

Application of Rare Rarth Compound Photosensitizer in Incinerable and Degradable PE

采用人工加速老化实验箱、户外曝晒、自然环境土壤填埋等方法对含稀土复合光敏剂、碳酸钙和生物活性剂的不同配方的聚乙烯(PE)薄膜进行了老化降解实验,通过扫描电镜、热重红外联用仪、乌式黏度计等进行了分析表征。结果表明,稀土复合光敏剂可促进 PE 薄膜光诱导后避光继续氧化降解,可焚烧可降解 PE 薄膜具有光降解、生物降解、可焚烧等可环境消纳功能。

The experimental methods such as artificial accelerated weathering, outdoor exposure, and landfill in natural soil were conducted to test the aging and degradation properties of PE film containing rare-earth photosensitizer, CaCO3, and a biologically activating agent. Characterizations with SEM, TG-IR, and Ubbelhode viscometer showed that the rare-earth photosensitizer promoted the lightinduced oxidative degradation of the PE film. The incinerable and degradable PE film possessed the environmental-, photo-, and biological-degradability.