The effects of compatibilizer on the morphological, mechanical, rheological, and shape memory properties of poly(lactic acid) (PLA) and poly(methyl methacrylate‐block‐n‐butyl acrylate‐block‐methyl methacrylate) (Poly(MnBM)) (80/20) blend were investigated. From the morphological results, the addition of 1 wt% SAN‐MAH as a compatibilizer showed minimum Poly(MnBM) domain size among the blends with the SAN‐MAH in the amounts from 0 to 7 wt%. Tensile and flexural strengths, and complex viscosity of the blends showed maximum when the SAN‐MAH content was 1 wt%, which suggested the increased compatibility between the PLA and Poly(MnBM) phases. From the above results, the optimum compatibilizer content of the PLA and Poly(MnBM) blend was 1 wt%. The recovery ratio of tensile energy was found to be 83 and 56% for the PLA/Poly(MnBM) blend with and without the SAN‐MAH (1 wt%), respectively. Upon blending the PLA and Poly(MnBM) (80/20) with SAN‐MAH (1 wt%), the increase of recovered tensile energy was observed, and that the brittleness of PLA was improved to be ductile which resulted an improved shape memory behavior of the blend. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48591.

中文翻译：

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增容剂对聚乳酸和聚MnBM共混物的机械，流变和形状记忆行为的影响

增容的聚（乳酸）（PLA）和聚（甲基丙烯酸甲酯的形态，机械，流变学，和形状记忆性能的影响块- ñ丁基丙烯酸酯嵌段对甲基丙烯酸-甲基丙烯酸甲酯（Poly（MnBM））（80/20）共混物进行了研究。从形态学结果来看，添加1 wt％的SAN-MAH作为增容剂显示，在具有SAN-MAH的共混物中，最小的Poly（MnBM）域尺寸为0至7 wt％。当SAN-MAH含量为1 wt％时，共混物的拉伸和弯曲强度以及复数粘度最大，这表明PLA和Poly（MnBM）相之间的相容性增加。根据以上结果，PLA和聚（MnBM）共混物的最佳增容剂含量为1重量％。发现有和没有SAN-MAH（1 wt％）的PLA / Poly（MnBM）共混物，拉伸能的回收率分别为83％和56％。将PLA和Poly（MnBM）（80/20）与SAN-MAH（1 wt％）混合后，可观察到恢复的拉伸能增加，并提高了PLA的脆性，使其具有延展性，从而改善了共混物的形状记忆性能。分级为4 +©2019 Wiley Periodicals，Inc.J.Appl。Polym。科学2020，137，48591。