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环境友好的方法来定制基于聚乳酸/米草的生物复合材料的界面粘附和机械性能
Reza Asheghi-Oskooee1, Parisa Morsali1, Tara Farizeh1
1Caspian Faculty of Engineering, College of Engineering, University of Tehran, P.O. Box 43841-119, Guilan, Iran.
International journal of biological macromolecules
|November 15, 2024
概括
这项研究增强了植物性生物复合材料,使用环保的米 (RS) 和反应性兼容剂. 与未经处理或传统加工材料相比,改性生物复合材料显示出明显改善的机械性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 可持续材料 可持续材料
背景情况:
- 聚乳酸 (PLA) 生物复合材料利用可再生资源,如米.
- 改善PLA和基纤维素填充剂之间的接口对于增强材料性能至关重要.
- 传统的加工方法可能无法充分利用农业废物填充器的潜力.
研究的目的:
- 使用聚乳酸 (PLA) 和米 (RS) 开发高性能植物生物复合材料.
- 调查环保的制方法和反应性兼容剂对生物复合材料性能的影响.
- 为了比较改性生物复合材料的性能与使用未经处理的RS和传统制RS的生物复合材料的性能.
主要方法:
- 在米 (RS) 上应用两种环保的粉碎方法,以纤维化和去除非纤维素成分.
- 在PLA/RS生物复合物中通过反应挤出将反应兼容剂 (环氧和马氏无水化合物功能组) 纳入.
- 机械性能的表征,包括弹性模量,抗拉强度,冲击强度和硬度.
主要成果:
- 环保的粉碎和反应相容性显著提高了生物复合材料的性能.
- 经过修改的生物复合材料表现出显著的改进:40%的抗冲击,160%的抗拉强度和100%的弹性模量增强比纯净的PLA.
- 开发的生物复合材料表现出优越的机械性能,相比使用RS通过传统粉加工的生物复合材料.
结论:
- 环保的RS纤维化与反应挤出相结合,为高性能生物复合材料提供了一条有效的途径.
- 改善的特性归因于部分纤维化,PLA链延伸和PLA在RS纤维上的接种.
- 这些发现凸显了可持续农业废弃物在制造先进,环保材料方面的潜力.
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