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Experimental Study on Mechanical Properties of Hemp Fibers Influenced by Various Parameters

Author

Listed:
  • João Ribeiro

    (Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal
    CIMO—Mountain Research Center, Campus Santa Apolónia, 5300-253 Bragança, Portugal)

  • Guilherme Bueno

    (Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal)

  • Manuel Rodríguez Martín

    (Department of Mechanical Engineering, Universidad de Salamanca, Av. Requejo 33, 49029 Zamora, Spain)

  • João Rocha

    (Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha (SusTEC), Instituto Politécnico de Bragança, Campus Santa Apolónia, 5300-253 Bragança, Portugal)

Abstract

Hemp fibers produced by different extraction techniques that were cultivated in the Portuguese districts of Bragança and Mirandela under various nitrogen fertilization and planting density conditions are examined and mechanically described in this paper. The objective of this study is to evaluate the influence of sowing density, nitrogen fertilization, sample location, and extraction method in order to improve the mechanical properties of hemp fibers. To achieve this, we determined the modulus of elasticity, the tensile strength, and the density. The mean value for the modulus of elasticity was 92.44 ± 7.44 GPa, the mean of tensile strength was 564.98 ± 167.03 MPa, and the mean of the density was 1.64 ± 0.24 g cm −3 . We performed a statistical analysis of all parameters using ANOVA and found that the retting method had the greatest influence among all parameters. The associated effects of nitrogen fertilization and sowing density revealed an important influence on tensile strength and specific tensile strength, respectively.

Suggested Citation

  • João Ribeiro & Guilherme Bueno & Manuel Rodríguez Martín & João Rocha, 2023. "Experimental Study on Mechanical Properties of Hemp Fibers Influenced by Various Parameters," Sustainability, MDPI, vol. 15(12), pages 1-12, June.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:12:p:9610-:d:1171621
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    References listed on IDEAS

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    1. Ivana Bajić & Borivoj Pejić & Vladimir Sikora & Mirjana Kostić & Aleksandra Ivanovska & Biljana Pejić & Bojan Vojnov, 2022. "The Effects of Irrigation, Topping, and Interrow Spacing on the Yield and Quality of Hemp ( Cannabis sativa L.) Fibers in Temperate Climatic Conditions," Agriculture, MDPI, vol. 12(11), pages 1-17, November.
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