在多乳酸生物复合材料中橄坑强化对环境退化的影响
Sofía Jurado-Contreras1, Francisco J Navas-Martos1, José A Rodríguez-Liébana1
1Andaltec Technological Centre, Ampliación Polígono Industrial Cañada de la Fuente, C/Vilches 34, 23600 Martos, Spain.
Materials (Basel, Switzerland)
|September 9, 2023
概括
这项研究研究了用橄粒增强的多乳酸 (PLA) 生物复合材料. 结果表明,添加橄坑可以增强PLA的降解,影响机械性能和材料结构.
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
- 生物材料工程 生物材料工程
背景情况:
- 聚乳酸 (PLA) 是以石油为基础的塑料的可持续替代品.
- 基于PLA的生物复合材料与纤维纤维素废物提供了更好的性能,低毒性和生物降解性.
- 了解废物含量对生物复合材料性能和降解的影响至关重要.
研究的目的:
- 为了制造和表征不同橄坑百分比 (5,15,25,40重量%) 的PLA生物复合材料.
- 评价橄坑内置对降解耐力,机械性能,结构,形态和吸水能力的影响.
- 为了评估一年的环境储存后的变化.
主要方法:
- 制造具有不同橄坑度的PLA生物复合材料.
- 使用里叶变换红外光谱 (FT-IR),X射线衍射 (XRD),扫描电子显微镜 (SEM) 和差分扫描热量计 (DSC) 进行表征.
- 评估机械性能 (拉力,,冲击强度),降解 (碳酸指数) 和吸水能力.
主要成果:
- 通过DSC,FT-IR和XRD分析证实了PLA的降解.
- 降解导致拉伸/曲强度降低,拉伸/曲模块增加.
- 橄坑增强促进了PLA降解,影响了材料性能.
结论:
- 橄坑的结合影响了PLA生物复合材料的降解行为.
- 用纤维素废物进行增强可以加速PLA降解.
- 需要进一步的研究,以优化生物复合材料配方,以适应特定的应用.
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