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首页> 美国卫生研究院文献>Biomolecules >Surface Modification of Basalt Fibres with ZnO Nanorods and Its Effect on Thermal and Mechanical Properties of PLA-Based Composites
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Surface Modification of Basalt Fibres with ZnO Nanorods and Its Effect on Thermal and Mechanical Properties of PLA-Based Composites

机译：ZnO纳米棒的玄武岩纤维表面改性及其对PLA基复合材料热和力学性能的影响

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The composites based on basalt fibres and poly(lactic acid) (PLA) show promising applications in biomedical and automotive fields, but their mechanical performance is still largely hindered by poor interfacial properties. Zinc oxide nanorods have been successfully used to tune the PLA/basalt fibre interface by growing them on commercially available basalt fabrics. The hierarchical fibres significantly enhanced the mechanical properties of PLA-based composites, especially their flexural strength and stiffness. These values are 26% and 22% higher than those of unmodified basalt/PLA composites, and 24% and 34% higher than those of glass/PLA composites used as a baseline. The increase in tensile and flexural properties hinges on the mechanical interlocking action promoted by ZnO nanorods and on the creation of a compact transcrystallinity structure. A degradation of PLA matrix was detected but it was positively counteracted by the better interfacial stress transfer. This study offers a novel approach for modifying the fibre–matrix interface of biocomposites intended for high-performance applications.
机译：基于玄武岩纤维和聚（乳酸）（PLA）的复合材料显示了生物医学和汽车领域的有希望的应用，但它们的机械性能仍然受到差的界面性质差的缺陷。氧化锌纳米棒已成功地通过在市售的玄武岩织物上生长PLA /玄武岩纤维界面来调整PLA /玄武岩纤维界面。等级纤维显着提高了基于PLA的复合材料的机械性能，尤其是它们的抗弯强度和刚度。这些值比未改性的玄武岩/ PLA复合材料高出26％，22％，高于用作基线的玻璃/ PLA复合材料的24％和34％。 ZnO纳米ODS促进的机械互锁动作的拉伸和弯曲性能的增加以及紧凑型损阻结构。检测到PLA矩阵的降解，但通过更好的界面应力转移呈正抵消。本研究提供了一种用于修改用于高性能应用的生物复合材料的光纤矩阵界面的新方法。

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