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首页> 外文期刊>Journal of Applied Polymer Science >Influence of rubber content on mechanical, thermal, and morphological behavior of natural rubber toughened poly(lactic acid)-multiwalled carbon nanotube nanocomposites
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Influence of rubber content on mechanical, thermal, and morphological behavior of natural rubber toughened poly(lactic acid)-multiwalled carbon nanotube nanocomposites

机译：橡胶含量对天然橡胶增韧聚乳酸-多壁碳纳米管纳米复合材料力学，热学和形貌行为的影响

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摘要

The effects of natural rubber (NR) on the mechanical, thermal, and morphological properties of multiwalled carbon nanotube (CNT) reinforced poly(lactic acid) (PLA) nanocomposites prepared by melt blending were investigated. A PLA/NR blend and PLA/CNT nanocomposites were also produced for comparison. The tensile strength and Young's modulus of PLA/CNT nanocomposites improved significantly, whereas the impact strength decreased compared to neat PLA. The incorporation of NR into PLA/CNT significantly improved the impact strength and elongation at break of the nanocomposites, which showed approximately 200% and 850% increases at 20 wt % NR, respectively. However, the tensile strength and Young's modulus of PLA/NR/CNT nanocomposites decreased compared to PLA/CNT nanocomposites. The morphology analysis showed the homogeneous dispersion of NR particles in PLA/NR/CNT nanocomposites, while CNTs preferentially reside in the NR phase rather than the PLA matrix. In addition, the incorporation of NR into PLA/CNT lowered the thermal stability and glass-transition temperature of the nanocomposites. (C) 2016 Wiley Periodicals, Inc.
机译：研究了天然橡胶（NR）对通过熔融共混制备的多壁碳纳米管（CNT）增强的聚乳酸（PLA）纳米复合材料的机械，热学和形态学性能的影响。还生产了PLA / NR共混物和PLA / CNT纳米复合材料用于比较。与纯PLA相比，PLA / CNT纳米复合材料的拉伸强度和杨氏模量显着提高，而冲击强度却下降。将NR掺入PLA / CNT中可显着改善纳米复合材料的冲击强度和断裂伸长率，这表明在20 wt％NR时分别增加了约200％和850％。然而，与PLA / CNT纳米复合材料相比，PLA / NR / CNT纳米复合材料的拉伸强度和杨氏模量下降。形态分析表明，NR颗粒均匀分散在PLA / NR / CNT纳米复合材料中，而CNT优先位于NR相而不是PLA基质中。另外，将NR掺入到PLA / CNT中降低了纳米复合材料的热稳定性和玻璃化转变温度。 （C）2016威利期刊公司

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