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Natural Fibre Composites Manufacture using Wrapped Hemp Roving with PA11

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Abstract

Hybrid yarn of reinforcement and thermo-plastic fibres gives the composite manufacturing process the advantage to dispense resin transferring task. The objective of this study is to make a hybrid yarn based on hemp and polyamide 11 (PA11) fibre for composite application. The weaveability of the manufactured hybrid yarn will be checked, and the tensile and flexural properties of the manufactured composite will be evaluated. The hybrid yarn is produced using the wrapping technique where a multifilament of polyamide 11 is wrapped around a low-twisted hemp roving. This wrapped yarn is woven; then, a composite plate is produced by the thermo-compression process. Textile and mechanical properties are characterised at each production scale: yarn, fabric and composite. Results from textiles and mechanical characterisation depend on several related parameters according to each scale, to the wrapping process and weaving process as well as to the manufacturing process of composite. At composite scale, the hemp content of these composites in volume is around 45%. The tensile strength of the produced composite from Hemp/PA11 reached 64 MPa, which is 18% higher than that of hemp/PA12 composite produced in the previous study (Corbin et al. 2020b).

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Data availability

The datasets generated and/or analysed during the current study are not publicly available due to privacy concerns but are available from the corresponding author on reasonable request.

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Acknowledgements

The authors gratefully acknowledge the Italian company Linificio and Canapificio Nazionale (LCN) for providing the hemp rovings used in this study.

Funding

This project has received funding from the Bio-based Industries Joint Undertaking (JU) under the European Union’s Horizon 2020 research and innovation programme under grant agreement No 744349 and Hauts de France Region. The JU receives support from the European Union’s Horizon 2020 research and innovation programme and the Bio-based Industries Consortium.

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CL wrote the main part of the article and performed data analysis. MF, DS and ARL involved in writing, review and data validation. All authors read and approved the final manuscript.

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Correspondence to Chaimae Laqraa.

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This article is part of the Topical Collection on Natural Fibers: Materials of the Future

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Laqraa, C., Ferreira, M., Soulat, D. et al. Natural Fibre Composites Manufacture using Wrapped Hemp Roving with PA11. Mater Circ Econ 4, 17 (2022). https://doi.org/10.1007/s42824-022-00057-3

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  • DOI: https://doi.org/10.1007/s42824-022-00057-3

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