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首页> 外文期刊>Journal of Polymers and the Environment >Stiff Biodegradable Polylactide Composites with Ultrafine Cellulose Filler
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Stiff Biodegradable Polylactide Composites with Ultrafine Cellulose Filler

机译：具有超细纤维素填料的硬质可生物降解聚丙交酯复合材料

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摘要

Polylactide (PLA) composites with 10-30 wt% of commercial fine grain filler of native cellulose were prepared by melt-mixing, and examined. The composite films had esthetic appearance, glossy surface, creamy color and density close to that of neat PLA. Good dispersion of the filler in PLA matrix was achieved. The composites were stiffer than neat PLA; in the glassy region the storage modulus increased by approx. 30 %. The tensile strength of the composite materials in the temperature range from 25 to 45 A degrees C was similar to that of neat PLA. No marked decrease in molar mass of PLA in the composites occurred during processing in comparison to neat PLA. Moreover, thermogravimetry experiments demonstrated good thermal stability of the composites; 5 % weight loss occurred well above 300 A degrees C.
机译：通过熔融混合来制备具有10-30重量％的天然纤维素的商业细颗粒填料的聚丙交酯（PLA）复合材料。复合膜具有美观的外观，光滑的表面，奶油色和接近纯PLA的密度。实现了填料在PLA基质中的良好分散。复合材料比纯净的PLA硬。在玻璃状区域中，储能模量增加了约。 30％。在25至45 A摄氏度的温度范围内，复合材料的拉伸强度与纯PLA相似。与纯PLA相比，在加工过程中复合材料中PLA的摩尔质量没有明显降低。此外，热重分析实验表明该复合材料具有良好的热稳定性。在300 A以上的温度下发生5％的重量减轻。

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