小麦纤维/聚乳酸复合物的特性:不同纤维形态和修饰方法的影响
Xiaolin Zhang1, Yali Wu1, Limin Gao1
1Faculty of Printing, Packing Engineering and Digital Media Technology, Xi'an University of Technology, Xi'an 710048, PR China.
International journal of biological macromolecules
|July 14, 2025
概括
高面积比率的草纤维显著增强了聚乳酸 (PLA) 复合材料. 改性草纤维/PLA复合材料符合工业标准,为轻质,高强度材料提供可持续的替代品.
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
- 复合材料 复合材料 复合材料
背景情况:
- 植物纤维的形态参数极大地影响植物纤维增强树脂基复合材料的性能.
- 草纤维为复合材料提供了一个可持续的资源.
研究的目的:
- 系统地分析不同形态的草纤维的物理化学特性.
- 为了研究基于聚乳酸 (PLA) 的复合材料的性能变化,这些复合材料用不同比例的草纤维增强.
- 评估修改的高面积比率草纤维 (HSF) /PLA复合材料对接口兼容性的增强效应.
主要方法:
- 吸草纤维的物理化学分析.
- 制造和机械测试具有不同草纤维面积比的PLA复合材料.
- 使用PLA-g-MAH,酸盐和酸盐对HSF/PLA复合材料进行修改.
- 评估复合材料的性能,包括冲击强度,拉力强度,破裂时的延伸,屈曲强度,屈曲模量,结晶性和吸水能力.
主要成果:
- 高面积比率的草纤维 (HSF) 在PLA矩阵上表现出最显著的强化效应.
- 在20%的纤维负载下,HSF/PLA复合材料表现出最高的冲击强度 (21.1kJ/m2).
- 酸盐修改提高了拉伸强度,破裂时的延伸,曲强度,曲模量和冲击强度,分别为18.3%,12.7%,19.3%,15.3%和10.1%.
- 泰坦酸修饰增加了37.6%的结晶性,并将水的吸收降低到1.18%.
- 所有经过测试的20%重量的HSF/PLA复合材料都符合木塑装饰板的工业标准.
结论:
- 草纤维的面积比是提高PLA复合材料性能的一个关键因素.
- 使用酸和酸盐的修改显著提高了HSF/PLA复合材料的界面兼容性和性能.
- 这些发现支持从草纤维开发轻质,高强度和成本效益的生物基复合材料.
相关概念视频
01:22Fiber Reinforced Concrete
142
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
142
01:14Polymer Classification: Architecture
3.0K
Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
3.0K
01:00Characteristics and Nomenclature of Homopolymers
3.3K
Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.
3.3K