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

机译:滑石对聚(乳酸)/聚(丁二酸丁酯)混合物的机械特性和断裂韧性的影响

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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:本研究研究了滑石添加剂对聚(乳酸)(PLA)(PLA)和聚(丁二酸丁酸酯)(PBS)聚合物共混物的物理和力学特性的影响。在该研究中,滑石含量在0,5,10和20个份之间变化,每百树脂(PHR),PLA / PBS比率为80 / 20W / W。结果表明,滑石增强了PLA / PBS混合物的机械性能。具体而言,随着滑石含量上升,抗拉强度,杨氏模量和PLA / PBS /滑石复合材料的冲击强度增加。另外,随着滑石量升高,断裂韧性会增加。增强的断裂韧性可归因于滑石的成核,其在阻碍PBS晶体生长的同时促进PLA的结晶。此外,形态学分析显示了聚合物基质中滑石的有效分布。

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