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用不同类型的纤维素修改的PLA矩阵对生物复合材料的衰老过程

Piotr Szatkowski¹, Jacek Gralewski², Katarzyna Suchorowiec¹

¹Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Krakow, Al. Mickiewicza 30, 30-059 Krakow, Poland.

Materials (Basel, Switzerland)

|January 11, 2024

概括

将植物衍生填充剂如纤维素添加到聚乳酸 (PLA) 生物复合材料中,可以提高抗紫外线的性能. 纤维素的形式显著影响紫外线老化性能,提供一种控制降解和降低成本的方法.

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
环境科学环境科学

背景情况:

非生物降解的聚合物产生持久的环境废物和微塑料.
可生物降解的聚合物和复合材料为传统塑料提供了可持续的替代品.
聚乳酸 (PLA) 是一个有前途的可生物降解聚合物,用于各种应用.

研究的目的:

研究植物性纤维素填充剂对基于PLA的生物复合材料的紫外线衰老特性的影响.
评估不同形式的纤维素 (微纤维素粉,亚麻纤维,木粉) 如何影响紫外线诱导的降解.
确定这些添加剂是否可以增强机械性能和控制降解率.

主要方法:

制备以PLA为基础的生物复合材料,含有2%重量的纤维素填充剂 (微纤维素,亚麻纤维,木粉).
在紫外线光衰老之前和之后的机械和表面性能的表征.
微观分析和里埃变换红外光谱 (FTIR) 来评估降解.

主要成果:

纤维素添加剂在紫外线老化过程中改善了PLA生物复合材料的特性.
纤维素填充剂的特定形式在抗紫外线方面发挥了关键作用.
即使添加了某些纤维素形式的微小添加量 (2%),也会延迟表面降解.
机械性能和紫外线降解时间可以通过填充剂选择和处理参数来控制.

结论:

植物性纤维素填充剂可以提高PLA生物复合材料的紫外线稳定性.
选择纤维素形式对于优化紫外线衰老性能至关重要.
这些发现提供了一种具有成本效益的策略,以改善可生物降解塑料的耐用性和环境状况.

关键词:

老化过程的老化过程.生物复合物生物复合物生物降解生物降解纤维素纤维素的使用方法降解降解降解降解降解.亚麻亚麻亚麻亚麻在线聚乙烯的多种类型树木树木树木树木

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