Department of Food Science and Technology, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid (PR 445), km 380, PO Box 6001, CEP 86051-990, Londrina, Brazil.
Carbohydr Polym. 2013 Jan 30;92(1):19-22. doi: 10.1016/j.carbpol.2012.09.038. Epub 2012 Sep 28.
Biodegradable films were produced from blends contained a high amount of thermoplastic starch (TPS) and poly(lactic acid) (PLA) plasticized with different adipate or citrate esters. It was not possible to obtain pellets for the production of films using only glycerol as a plasticizer. The plasticization of the PLA with the esters and mixture stages added through extrusion was critical to achieve a blend capable of producing films by blow extrusion. Adipate esters were the most effective plasticizers because they interacted best with the PLA and yielded films with appropriate mechanical properties.
可生物降解薄膜是由含有高比例热塑性淀粉（TPS）和聚乳酸（PLA）的共混物制成的，这些塑料用不同的己二酸或柠檬酸酯增塑。仅使用甘油作为增塑剂，无法获得用于生产薄膜的颗粒。通过挤出添加酯和混合阶段对 PLA 进行增塑对于实现能够通过吹塑挤出生产薄膜的共混物至关重要。己二酸酯是最有效的增塑剂，因为它们与 PLA 相互作用最好，并且得到的薄膜具有适当的机械性能。
