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首页> 外文期刊>Journal of Applied Polymer Science >Effect of glycidyl methacrylate-grafted natural rubber on physical properties of polylactic acid and natural rubber blends
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Effect of glycidyl methacrylate-grafted natural rubber on physical properties of polylactic acid and natural rubber blends

机译：甲基丙烯酸缩水甘油酯接枝的天然橡胶对聚乳酸和天然橡胶共混物物理性能的影响

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摘要

Natural rubber (NR) was melt blended with polylactic acid (PLA) at various ratios using an internal mixer. The impact strength and elongation at break of PLA/NR blend dramatically increased with increasing NR content up to 10% (w/w). Glycidyl methacrylate-grafted natural rubber (NR-g-GMA) was used as a compatibilizer for PLA/NR blend. The effects of content and %grafting of NR-g-GMA on mechanical properties of PLA/NR blend were studied. The experimental result showed that the addition of NR-g-GMA in PLA/NR blend significantly improved impact strength and elongation at break of PLA/NR blend when compared with that of neat PLA and PLA/NR blend without NR-g-GMA. The impact strength and elongation at break of PLA/NR blend increased with increasing NR-g-GMA content up to 1% (w/w). Moreover, with increasing % grafting of NR-g-GMA in PLA/NR blend up to 4.35, the impact strength and elongation at break of the blend increased. Morphological and thermal property of PLA, PLA/NR, and PLA/NR/NR-g-GMA were elucidated as well.
机译：使用内部混合器将天然橡胶（NR）与聚乳酸（PLA）以各种比例熔融共混。随着NR含量增加到10％（w / w），PLA / NR共混物的冲击强度和断裂伸长率显着增加。甲基丙烯酸缩水甘油酯接枝的天然橡胶（NR-g-GMA）被用作PLA / NR混合物的增容剂。研究了NR-g-GMA的含量和接枝率对PLA / NR共混物力学性能的影响。实验结果表明，与不含NR-g-GMA的纯PLA和PLA / NR掺混物相比，在PLA / NR掺和物中添加NR-g-GMA显着提高了PLA / NR掺混物的冲击强度和断裂伸长率。 PLA / NR共混物的冲击强度和断裂伸长率随NR-g-GMA含量增加至1％（w / w）而增加。此外，随着NR-g-GMA在PLA / NR共混物中的接枝百分比增加至4.35，共混物的冲击强度和断裂伸长率增加。还阐明了PLA，PLA / NR和PLA / NR / NR-g-GMA的形态和热学性质。

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