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Effect of Talc on Mechanical Characteristics and Fracture Toughness of Poly(lactic acid)/Poly(butylene succinate) Blend

机译:滑石粉对聚乳酸/丁二酸丁二醇酯共混物力学性能和断裂韧性的影响

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摘要

This research investigates the effect of talc additive on physical and mechanical characteristics of poly(lactic acid) (PLA) and poly(butylene succinate) (PBS) polymer blend. In the study, the talc content is varied between 0, 5, 10, and 20 parts per hundred resin (phr) and the PLA/PBS ratio is 80/20w/w. The results reveal that talc enhances the mechanical properties of PLA/PBS blend. Specifically, tensile strength, Young's modulus, and impact strength of PLA/PBS/talc composite increase as talc content rises. In addition, fracture toughness increases substantially as talc quantity is raised. The enhanced fracture toughness is attributable to nucleation of talc which promotes crystallization of PLA while hindering PBS crystal growth. Moreover, morphology analysis shows efficient distribution of talc in the polymer matrix.
机译:这项研究调查了滑石粉添加剂对聚乳酸(PLA)和聚丁二酸丁二酯(PBS)聚合物共混物的物理和机械特性的影响。在这项研究中,滑石粉含量在每100份树脂(phr)为0、5、10和20份之间变化,而PLA / PBS比为80 / 20w / w。结果表明,滑石粉增强了PLA / PBS共混物的机械性能。具体而言,随着滑石含量的增加,PLA / PBS /滑石复合材料的拉伸强度,杨氏模量和冲击强度增加。另外,随着滑石量的增加,断裂韧性显着提高。断裂韧性的提高归因于滑石的成核,其促进了PLA的结晶,同时阻碍了PBS晶体的生长。此外,形态分析显示滑石在聚合物基质中的有效分布。

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