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Thermomechanical and Structural Analysis of Biocomposites and Gamma Irradiation and Photoaging on Mechanical and Viscoelastic Properties

Received: 26 February 2022     Accepted: 25 April 2022     Published: 26 July 2022
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Abstract

The replacement of petrochemical fibres with natural fibres for reinforcing polyvinyl chloride matrix biomaterials is currently being researched and applied in the technical and technological fields. Natural fibres offer environmental advantages combined with economic advantages related to comparatively lower cost and lower energy consumption. it is in this context that typha stem fibres extracted from the typha plant found in south-saharan Africa are used in this study for the manufacture of biocomposites. The objective is to evaluate the thermogravimetric (TG/DTG) and viscoelastic behaviour of polyolefin matrix biocomposites reinforced with relatively high volume fractions, 25, 35 and 45%, of typha stem powder. The incorporation of typha stem powder slightly reduces the thermal stability of the biomaterials by decreasing the thermal degradation onset temperature and the DTG peak temperature compared to pure matrices. The limit for the practical application of these composites could be set at 270°C, before the onset of major weight loss. Monitoring of the different materials by rheological measurements during photoaging allowed to understand the mechanisms of photodegradation. The shear thinnig behaviour observed on the complex viscosity points to possible small changes at the molecular level. Photochemical degradation over the photo-aging cycles resulted in cut-off and recombination phenomena. Dynamic storage moduli (G') and loss moduli (G'') tend to increase with the proportion of typha powder. The dynamic storage modulus (G') and loss modulus (G'') tend to increase with the proportion of typha powder. We observed a rheofluidic behaviour by shearing of the melt. The dynamic storage (G') and loss (G'') moduli tend to increase with the proportion of typha powder. From a thermal and rheological point of view, HDPE-based biocomposites show interesting properties for use in applications. The influence of gamma irradiation leads to a competition between two mechanisms (chain breaks and recombination) of photooxidation that take place together within the material. Mechanical properties such as tensile and flexural strength are improved with increasing gamma radiation dose up to 75 kGy.

Published in Advances in Materials (Volume 11, Issue 3)
DOI 10.11648/j.am.20221103.11
Page(s) 50-59
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

Thermogravimetric Analysis (TGA), Thermal Stability, Photoaging, Mechanical and Viscoelastic Properties

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Cite This Article
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    Babacar Niang, Abdoulaye Bouya Diop, Abdou Karim Farota, Nicola Schiavone, Haroutioun Askanian, et al. (2022). Thermomechanical and Structural Analysis of Biocomposites and Gamma Irradiation and Photoaging on Mechanical and Viscoelastic Properties. Advances in Materials, 11(3), 50-59. https://doi.org/10.11648/j.am.20221103.11

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    ACS Style

    Babacar Niang; Abdoulaye Bouya Diop; Abdou Karim Farota; Nicola Schiavone; Haroutioun Askanian, et al. Thermomechanical and Structural Analysis of Biocomposites and Gamma Irradiation and Photoaging on Mechanical and Viscoelastic Properties. Adv. Mater. 2022, 11(3), 50-59. doi: 10.11648/j.am.20221103.11

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    AMA Style

    Babacar Niang, Abdoulaye Bouya Diop, Abdou Karim Farota, Nicola Schiavone, Haroutioun Askanian, et al. Thermomechanical and Structural Analysis of Biocomposites and Gamma Irradiation and Photoaging on Mechanical and Viscoelastic Properties. Adv Mater. 2022;11(3):50-59. doi: 10.11648/j.am.20221103.11

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  • @article{10.11648/j.am.20221103.11,
      author = {Babacar Niang and Abdoulaye Bouya Diop and Abdou Karim Farota and Nicola Schiavone and Haroutioun Askanian and Vincent Verney and Abdoul Karim Mbodji and Malick Wade and Diène Ndiaye and Bouya Diop},
      title = {Thermomechanical and Structural Analysis of Biocomposites and Gamma Irradiation and Photoaging on Mechanical and Viscoelastic Properties},
      journal = {Advances in Materials},
      volume = {11},
      number = {3},
      pages = {50-59},
      doi = {10.11648/j.am.20221103.11},
      url = {https://doi.org/10.11648/j.am.20221103.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20221103.11},
      abstract = {The replacement of petrochemical fibres with natural fibres for reinforcing polyvinyl chloride matrix biomaterials is currently being researched and applied in the technical and technological fields. Natural fibres offer environmental advantages combined with economic advantages related to comparatively lower cost and lower energy consumption. it is in this context that typha stem fibres extracted from the typha plant found in south-saharan Africa are used in this study for the manufacture of biocomposites. The objective is to evaluate the thermogravimetric (TG/DTG) and viscoelastic behaviour of polyolefin matrix biocomposites reinforced with relatively high volume fractions, 25, 35 and 45%, of typha stem powder. The incorporation of typha stem powder slightly reduces the thermal stability of the biomaterials by decreasing the thermal degradation onset temperature and the DTG peak temperature compared to pure matrices. The limit for the practical application of these composites could be set at 270°C, before the onset of major weight loss. Monitoring of the different materials by rheological measurements during photoaging allowed to understand the mechanisms of photodegradation. The shear thinnig behaviour observed on the complex viscosity points to possible small changes at the molecular level. Photochemical degradation over the photo-aging cycles resulted in cut-off and recombination phenomena. Dynamic storage moduli (G') and loss moduli (G'') tend to increase with the proportion of typha powder. The dynamic storage modulus (G') and loss modulus (G'') tend to increase with the proportion of typha powder. We observed a rheofluidic behaviour by shearing of the melt. The dynamic storage (G') and loss (G'') moduli tend to increase with the proportion of typha powder. From a thermal and rheological point of view, HDPE-based biocomposites show interesting properties for use in applications. The influence of gamma irradiation leads to a competition between two mechanisms (chain breaks and recombination) of photooxidation that take place together within the material. Mechanical properties such as tensile and flexural strength are improved with increasing gamma radiation dose up to 75 kGy.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - Thermomechanical and Structural Analysis of Biocomposites and Gamma Irradiation and Photoaging on Mechanical and Viscoelastic Properties
    AU  - Babacar Niang
    AU  - Abdoulaye Bouya Diop
    AU  - Abdou Karim Farota
    AU  - Nicola Schiavone
    AU  - Haroutioun Askanian
    AU  - Vincent Verney
    AU  - Abdoul Karim Mbodji
    AU  - Malick Wade
    AU  - Diène Ndiaye
    AU  - Bouya Diop
    Y1  - 2022/07/26
    PY  - 2022
    N1  - https://doi.org/10.11648/j.am.20221103.11
    DO  - 10.11648/j.am.20221103.11
    T2  - Advances in Materials
    JF  - Advances in Materials
    JO  - Advances in Materials
    SP  - 50
    EP  - 59
    PB  - Science Publishing Group
    SN  - 2327-252X
    UR  - https://doi.org/10.11648/j.am.20221103.11
    AB  - The replacement of petrochemical fibres with natural fibres for reinforcing polyvinyl chloride matrix biomaterials is currently being researched and applied in the technical and technological fields. Natural fibres offer environmental advantages combined with economic advantages related to comparatively lower cost and lower energy consumption. it is in this context that typha stem fibres extracted from the typha plant found in south-saharan Africa are used in this study for the manufacture of biocomposites. The objective is to evaluate the thermogravimetric (TG/DTG) and viscoelastic behaviour of polyolefin matrix biocomposites reinforced with relatively high volume fractions, 25, 35 and 45%, of typha stem powder. The incorporation of typha stem powder slightly reduces the thermal stability of the biomaterials by decreasing the thermal degradation onset temperature and the DTG peak temperature compared to pure matrices. The limit for the practical application of these composites could be set at 270°C, before the onset of major weight loss. Monitoring of the different materials by rheological measurements during photoaging allowed to understand the mechanisms of photodegradation. The shear thinnig behaviour observed on the complex viscosity points to possible small changes at the molecular level. Photochemical degradation over the photo-aging cycles resulted in cut-off and recombination phenomena. Dynamic storage moduli (G') and loss moduli (G'') tend to increase with the proportion of typha powder. The dynamic storage modulus (G') and loss modulus (G'') tend to increase with the proportion of typha powder. We observed a rheofluidic behaviour by shearing of the melt. The dynamic storage (G') and loss (G'') moduli tend to increase with the proportion of typha powder. From a thermal and rheological point of view, HDPE-based biocomposites show interesting properties for use in applications. The influence of gamma irradiation leads to a competition between two mechanisms (chain breaks and recombination) of photooxidation that take place together within the material. Mechanical properties such as tensile and flexural strength are improved with increasing gamma radiation dose up to 75 kGy.
    VL  - 11
    IS  - 3
    ER  - 

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Author Information
  • Laboratory of Atmospheric and Ocean-Material Sciences, Energy, Device, Training and Research Unit of Applied Sciences and Technologies, Gaston Berger University, Saint-Louis, Senegal

  • Laboratory of Atmospheric and Ocean-Material Sciences, Energy, Device, Training and Research Unit of Applied Sciences and Technologies, Gaston Berger University, Saint-Louis, Senegal

  • Laboratory of Atmospheric and Ocean-Material Sciences, Energy, Device, Training and Research Unit of Applied Sciences and Technologies, Gaston Berger University, Saint-Louis, Senegal

  • Clermont Ferrand Institute of Chemistry, Clermont Auvergne University, National Centre for Scientific Research, SIGMA Clermont, Clermont-Ferrand, France

  • Clermont Ferrand Institute of Chemistry, Clermont Auvergne University, National Centre for Scientific Research, SIGMA Clermont, Clermont-Ferrand, France

  • Clermont Ferrand Institute of Chemistry, Clermont Auvergne University, National Centre for Scientific Research, SIGMA Clermont, Clermont-Ferrand, France

  • Laboratory of Atmospheric and Ocean-Material Sciences, Energy, Device, Training and Research Unit of Applied Sciences and Technologies, Gaston Berger University, Saint-Louis, Senegal

  • Laboratory of Atmospheric and Ocean-Material Sciences, Energy, Device, Training and Research Unit of Applied Sciences and Technologies, Gaston Berger University, Saint-Louis, Senegal

  • Laboratory of Atmospheric and Ocean-Material Sciences, Energy, Device, Training and Research Unit of Applied Sciences and Technologies, Gaston Berger University, Saint-Louis, Senegal

  • Laboratory of Atmospheric and Ocean-Material Sciences, Energy, Device, Training and Research Unit of Applied Sciences and Technologies, Gaston Berger University, Saint-Louis, Senegal

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