Main criteria of sustainable natural fibre for efficient unidirectional biocomposites
Main criteria of sustainable natural fibre for efficient unidirectional biocomposites
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DOI：
10.1016/j.compositesa.2019.105504
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发表时间：
2019-09-01
影响因子：
8.7
通讯作者：
Baley, Christophe
中科院分区：
文献类型：
--
作者：
Bourmaud, Alain;Merotte, Justin;Baley, Christophe
本文研究了生物化学，形态和机械性能的大范围的植物纤维探索与相同的方法。生物化学结果清楚地显示出凝胶状（即亚麻和大麻）和木聚糖型（即黄麻和洋麻）细胞壁之间的强烈差异。壁层组成的这些差异对细胞壁硬度产生影响，通过纳米压痕和原子力显微镜测量突出显示，而且由于纤维束凝聚力的变化，也对纤维个性化产生影响。此外，形态学，特别是管腔尺寸诱导表观密度差异。此外，纤维形态和性能的影响，显示UD材料。最后，纵向杨氏模量的每一个植物纤维批次反计算UD刚度通过逆方法，得到的结果是根据文献值的值，证明该方法的兴趣，以估计纵向杨氏模量的短植物纤维。
This paper investigates biochemical, morphological and mechanical properties of a large range of plant fibres explored with the same methods. Biochemical results clearly exhibit strong differences between gelatinous, i.e. flax and hemp, and xylan type, i.e. jute and kenaf, cell walls. These differences into parietal composition have an impact on cell wall stiffness, highlighted through nanoindentation and atomic force microscopy measurements, but also on fibre individualisation, due to variations into fibre bundles cohesion. In addition, the morphology and particularly the lumen size induces apparent density differences. Moreover, the influence of fibre morphology and properties is demonstrated on UD materials. Finally, longitudinal Young's modulus of each plant fibre batches is back-calculated from UD stiffness by an inverse method; the results obtained are in accordance with the values in the literature values, proving the interest of this method to estimate longitudinal Young's modulus of short plant fibres.