亚麻纤维束：一种显著的多尺度单向复合材料

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2025-04-29 DOI:10.1016/j.compositesa.2025.108990

Margot Chalard , Camille Goudenhooft , Alessia Melelli , Mario Scheel , Timm Weitkamp , Pierre D’arras , Alain Bourmaud , Christophe Baley

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引用次数: 0

摘要

亚麻纤维束具有显著的结构，主要是通过侵入式生长产生的，可以比作用不连续纤维增强的单向复合材料，导致复杂的机械行为。目前工作的主要目标是提供微观结构和束组件的局部力学性能的详细描述，以更好地解释其特定的力学行为。使用拉伸测试和扫描电子显微镜检查了它们的拉伸行为，揭示了断裂现象的差异。显微层析成像和多光子显微镜图像显示，纤维末端（尖端）含有高比例的结晶和取向纤维素。利用原子力显微镜进行了额外的测试，以估计中间薄片、初级细胞壁以及S1和S2层的厚度和压痕模量。这些观察结果阐明了亚麻束显著的多尺度结构的起源。

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Flax fibre bundle: A remarkable multi-scale unidirectional composite material

Flax fibre bundles possess a remarkable structure, mainly generated through intrusive growth, that can be likened to a unidirectional composite reinforced with discontinuous fibres, resulting in complex mechanical behaviour. The main objectives of the present work are to provide a detailed description of the microstructure and local mechanical properties of the bundle components to better explain their specific mechanical behaviour. Their tensile behaviour was examined using tensile testing and scanning electron microscopy, revealing disparities in the fracture phenomena. Micro-tomographic and multi-photon microscopy images revealed the presence of fibre ends (tips) with a high fraction of crystalline and oriented cellulose. Additional tests were conducted using atomic force microscopy to estimate the thickness and indentation modulus of the middle lamellae, the primary cell wall as well as the S1 and S2 layers. These observations elucidate the origin of the remarkable multi-scale structure of the flax bundles.

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.