The Natural Growth of CaCO3 Crystals on Hemp Yarns: A Morphology Analysis and the Mechanical Effects on Composites

Autor: Quentin Drouhet, Romain Barbière, Fabienne Touchard, Laurence Chocinski-Arnault, David Mellier
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Fibers, Vol 11, Iss 10, p 88 (2023)
Druh dokumentu: article
ISSN: 2079-6439
DOI: 10.3390/fib11100088
Popis: Plant fibres are promising candidates to replace synthetic fibres in polymer matrix composites. However, there is still an important issue to overcome: the poor quality of adhesion at the fibre/matrix interface. Many surface treatments of plant fibres have been developed, most of them based on non-environmentally friendly processes. In this paper, a 100% natural treatment is proposed. Hemp yarns are immersed in tap water until the natural growth of limestone beads attached to their surface occurs. The morphology analysis reveals that these calcium carbonate crystals have a nanoneedle architecture, with hemp fibres acting as nucleators for these highly ordered coral-like structures. Tensile tests on ±45° woven hemp/epoxy composites show that the presence of CaCO3 beads improves the adhesion quality of the fibre/matrix interface and, therefore, increases Young’s modulus value.
Databáze: Directory of Open Access Journals