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Binary-additives Toughened Biopolymer for Packaging Application

机译：二元添加剂钢化生物聚合物包装应用

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The toughening of poly(lactic acid) or PLA with Monmorillonite clay (MMT), polyamide-block-ether (PEBAX) and hyperbranched polymer (Boltorn?) was investigated. PLA was first blended with 1, 2, 2.5, 3 and 4%wt of MMT, 5-20%wt of PEBAX and Boltorn? for a single additive system. For the binary additive system, PEBAX and Boltorn? 5-20%wt were pre-mixed with 2.5%wt of MMT, and then they were added to PLA. PLA blendes were prepared by an internal mixer. Tensile properties, impact properties and morphology of PLA blends were investigated. For single additive with PLA, adding MMT showed the increasing of toughness of PLA, PLA/PEBAX blends were shown the increasing of elongation and impact strength with containing PEBAX content, but modulus and tensile strength decreased. The results of PLA/Boltorn? blends were similar with PLA/PEBAX blends. Furthermore, elongation and impact strength of PLA blends can be improved by adding PEBAX binary additive, modulus and tensile strength decreased but not as severe as single additive. Adding Boltorn? as in a binary additive led to the brittleness and less elongation of blends when compared to adding a single additive and neat PLA.
机译：研究了聚（乳酸）或PLA与单米尔硫酸盐粘土（MMT），聚酰胺 - 嵌段醚（PEBAX）和超支化聚合物（BOLTORNESα）的增韧。 PLA首先用1,2,2，2.5,3和4％wt的mmt，5-20％wt的pebax和boltorn？对于单个添加剂系统。对于二进制添加剂系统，PeBax和Boltorn？将5-20％wt与2.5％wt的MMT预混合，然后将它们加入PLA。通过内部混合器制备PLA搅拌器。研究了PLA混合物的拉伸性质，影响性质和形态。对于用PLA的单一添加剂，添加MMT显示PLA韧性的增加，显示PLA / PEBAX共混物的延长和冲击强度随含有PeBax含量的增加，但模量和拉伸强度降低。 PLA / BOLTORN的结果？混合物与PLA / PeBax混合物相似。此外，通过添加Pebax二元添加剂，可以提高PLA混合物的伸长和冲击强度，模量和拉伸强度降低但不像单一添加剂一样严重。添加boltorn？与添加单一添加剂和整洁PLA相比，如二元添加剂导致脆性和较少的共混物伸长。

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