Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 124, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2019.105504
Keywords
Natural fibers; Biocomposite; Microstructures; Mechanical properties
Funding
- OSEO Agency
- French research cluster CNRS-INRA 'Symbiose' SYnthon et Materiaux BIOSources
- PSPC collaborative project FIABILIN
- PSPC collaborative project SINFONI
- French Research Ministry
- Region Bretagne
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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.
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