The poly (lactic acid) (PLA) and lignin (LG) are promising candidates to develop green plastic. However, the blending of lignin with PLA leads to incompatible blend with poor mechanical and thermal properties. Hence, in the present work, a green and simple approach was employed to make PLA/LG compatible blend with high lignin percentage (5 and 20%). The E-beam irradiated lignins having different absorbed dosages were blended with two different percentages 5 and 20 with PLA in the presence of 3 phr triallyl isocyanurate (TAIC). FTIR and DSC studies have confirmed the formation of PLA-TAIC-Lignin crosslinked structures which act as an interface between the dispersed lignin phase and PLA matrix and hence improved their compatibility in the resulting blend. The compatibility of resulting blends was further validated by the morphology study, Glass transition temperature (T) behavior of PLA/LG blends and by observing the significant improvement in the mechanical, thermal and hydrolytic degradation properties.

中文翻译：

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一种绿色物理方法，可增容生物基聚乳酸/木质素混合物，以获得更好的机械、热和降解性能


聚乳酸（PLA）和木质素（LG）是开发绿色塑料的有希望的候选材料。然而，木质素与PLA的共混会导致共混物不相容，机械性能和热性能较差。因此，在目前的工作中，采用了一种绿色且简单的方法来制备具有高木质素百分比（5％和20％）的PLA/LG相容混合物。将具有不同吸收剂量的电子束辐照木质素与两种不同百分比5和20在3份异氰脲酸三烯丙酯(TAIC)存在下与PLA混合。 FTIR 和 DSC 研究证实了 PLA-TAIC-木质素交联结构的形成，该结构充当分散木质素相和 PLA 基质之间的界面，从而提高了它们在所得共混物中的相容性。通过形貌研究、PLA/LG 共混物的玻璃化转变温度 (T) 行为以及观察机械、热和水解降解性能的显着改善，进一步验证了所得共混物的相容性。