ABSTRACT In order to enhance properties of polylactic acid (PLA), its blend with polycarbonate (PC) and silica nanofiller were prepared and their properties were compared with neat PLA and PLA/PC alloy. To have a better exchange reaction between PLA and PC and also an enhanced dispersion of nanosilica throughout the organic polymeric matrix, tin(II) 2-ethylhexanoate (TEH) and poly(ethylene-co-glycidyl methacrylate) (PEGM) were used as two different compatibilisers for the transesterification reactions between PLA, PC and nanosilica and chemical grafting of PEGM to PLA, PC and nanosilica. Performed analyses including X-ray diffraction, transmission electron microscopy, differential scanning calorimetry, melt flow index, tensile and thermogravimetric analysis demonstrated that although PEGM, which contains reactive epoxide groups, has a positive effect to promote the properties of its related nanohybrid, the best results were obtained in the presence of TEH as an effective coordination catalyst. Results showed that an enhanced industrial nanocomposite alloy can be fabricated with this efficient catalyst.

中文翻译：

---

基于聚乳酸/聚碳酸酯/纳米二氧化硅的增强纳米杂化合金的制备

摘要 为了提高聚乳酸 (PLA) 的性能，制备了其与聚碳酸酯 (PC) 和二氧化硅纳米填料的共混物，并将其性能与纯 PLA 和 PLA/PC 合金进行了比较。为了在 PLA 和 PC 之间进行更好的交换反应，并增强纳米二氧化硅在整个有机聚合物基质中的分散，使用 2-乙基己酸锡 (II) (TEH) 和聚（乙烯-共-甲基丙烯酸缩水甘油酯）（PEGM）作为两种PLA、PC 和纳米二氧化硅之间的酯交换反应以及 PEGM 化学接枝到 PLA、PC 和纳米二氧化硅的不同增容剂。进行的分析包括 X 射线衍射、透射电子显微镜、差示扫描量热法、熔体流动指数、拉伸和热重分析表明，尽管 PEGM 含有反应性环氧基团，具有促进其相关纳米杂化物的性能的积极作用，在作为有效配位催化剂的 TEH 存在下获得了最佳结果。结果表明，使用这种高效催化剂可以制备增强的工业纳米复合合金。