Evaluation of some eco-friendly plasticizers for PLA films processing
Evaluation of some eco-friendly plasticizers for PLA films processing
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DOI：
10.1002/app.43223
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发表时间：
2016-04-05
影响因子：
3
通讯作者：
Rapa, Maria
中科院分区：
文献类型：
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作者：
Darie-Nita, Raluca N.;Vasile, Cornelia;Rapa, Maria
本研究的第一步，以获得绿色材料的食品包装，通过使用环保的生物塑料，聚乳酸（PLA），无毒增塑剂。不同类型的无毒的生物相容性增塑剂/润滑剂，无论是在实验室中获得的，以及商业的，被用来调节PLA的物理和机械性能。通过Brabender混合器的熔融配混导致获得均匀的材料。PLA低聚物、L-丙交酯、聚（乙二醇）和环氧化大豆油（USE）的掺入改善了熔体流动性和可加工性，增加了所得增塑PLA系统的亲水性。USE显着增加了断裂伸长率，降低了玻璃化转变温度，并增加了PLA链的流动性。(c)2015 Wiley Periodicals，Inc.
This study was conducted as a first step in order to obtain green materials for food packaging by using an eco-friendly bioplastic, polylactic acid (PLA), and nontoxic plasticizers. Different types of nontoxic biocompatible plasticizers/lubricants, both obtained in the laboratory, as well as commercial ones, were employed to modulate physical and mechanical properties of PLA. Melt compounding by means of a Brabender mixer led to obtaining of homogeneous materials. The incorporation of PLA oligomer, L-lactide, poly(ethylene glycol), and epoxidized soybean oil (USE) improved the melt flow and processability, increasing the hydrophilicity of the resulted plasticized PLA systems. USE significantly increased the elongation at break, reduced the glass transition temperature, and increased the PLA chain mobility. (c) 2015 Wiley Periodicals, Inc.