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首页> 外文期刊>Journal of Applied Polymer Science >Biodegradable composites of poly(butylene succinate-co-butylene adipate) reinforced by poly(lactic acid) fibers
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Biodegradable composites of poly(butylene succinate-co-butylene adipate) reinforced by poly(lactic acid) fibers

机译：聚乳酸纤维增强的聚丁二酸丁二酯-己二酸丁二酯共聚物的生物降解复合材料

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摘要

Biodegradable composites of poly(butylene succinate-co-butylene adipate) (PBSA) reinforced by poly(lactic acid) (PLA) fibers were developed by hot compression and characterized by Scanning electron microscopy (SEM), differential scanning calorimetry (DSC), dynamic mechanical analyzer, and tensile testing. The results show that PBSA and PLA are immiscible, but their interface can be improved by processing conditions. In particular, their interface and the resulting mechanical properties strongly depend on processing temperature. When the temperature is below 120 degrees C, the bound between PBSA and PLA fiber is weak, which results in lower tensile modulus and strength. When the processing temperature is higher (greater than 160 degrees C), the relaxation of polymer chain destroyed the molecular orientation microstructure of the PLA fiber, which results in weakening mechanical properties of the fiber then weakening reinforcement function. Both tensile modulus and strength of the composites increased significantly, in particular for the materials reinforced by long fiber. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43530.
机译：聚乳酸（PLA）纤维增强的聚丁二酸丁二酸丁二酯-己二酸丁二酯（PBSA）的生物可降解复合材料是通过热压缩技术开发的，并通过扫描电子显微镜（SEM），差示扫描量热法（DSC），动态机械分析仪和拉伸测试。结果表明，PBSA和PLA不相容，但可以通过加工条件改善它们的界面。特别是，它们的界面和所产生的机械性能在很大程度上取决于加工温度。当温度低于120℃时，PBSA和PLA纤维之间的结合弱，这导致较低的拉伸模量和强度。当加工温度较高时（大于160摄氏度），聚合物链的松弛破坏了PLA纤维的分子取向微观结构，这会导致纤维的机械性能减弱，进而增强功能。复合材料的拉伸模量和强度都显着提高，特别是对于长纤维增强的材料。 （c）2016 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，43530。

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