Research Article

EFFECT OF NANOCLAY (HALLOYSITE) ON THE DYNAMIC MECHANICAL PROPERTIES OF RECYCLED POLYPROPYLENE FILLED NaOH TREATED MAIZE COB POWDER COMPOSITES

Muhammad A.1*, Abdullahi, D2, Musa M. B.3, Nuhu L.4, Hamza A.5
1 Department of Polymer and Textile Technology, Kaduna Polytechnic, Kaduna
2 Department of Polymer and Textile Engineering, Ahmadu Bello University (ABU), Zaria, Nigeria
3 Department of Polymer and Textile Engineering, Ahmadu Bello University, Zaria, Nigeria
4 Department of Polymer and Textile Engineering, Ahmadu Bello University, Zaria
5 Department of Chemistry, Ahmadu Bello University, Zaria
* Corresponding author: adamubappa1@gmail.com
Published: Aug, 2025
DOI: 10.67637/njt.2025.altnbesp
Pages: 38-43
Views: 73
Downloads: 92

Abstract

This study investigates the effects of nanoclay (halloysite) on the dynamic mechanical behaviour of recycled polypropylene (rPP) composites reinforced with maize cob powder (MCP). The influence of filler loading (10–40 wt%), particle size (100–500 µm), 2 % NaOH surface treatment, and nanoclay content (2–8 wt%) on storage modulus (E′), loss modulus (E″), damping factor (tan δ), and glass transition temperature (Tg) were analyzed using a Netzsch DMA 242 dynamic mechanical analyzer. Results revealed that increasing MCP loading and decreasing particle size enhanced the stiffness and thermal stability of the composites. The addition of nanoclay further improved modulus and Tg by restricting polymer chain mobility. NaOH treatment enhanced interfacial bonding, leading to improved stiffness and damping behaviour. The highest Tg (122.6 °C) was recorded for 100 µm fillers at 40 % loading and 8 % nanoclay, demonstrating the synergistic reinforcement effect of MCP and nanoclay in rPP matrices. The improved viscoelastic properties suggest the suitability of rPP/MCP/nanoclay composites for applications requiring enhanced stiffness, thermal resistance, and vibration damping.

Keywords

Recycled Polypropylene (rPP) Maize Cob Powder (MCP) Halloysite Nanoclay (NC) Sodium Hydroxide (NaOH) Treatment Dynamic Mechanical Properties

References

  1. Alhassan, M., et al. (2021). Polypropylene composites reinforced with agricultural waste: mechanical and thermal behavior. Journal of Polymer Research, 28(5), 1–12.
  2. Ayrilmis, N., et al. (2013). Dynamic mechanical properties of wood-polypropylene composites. Composites Part B: Engineering, 45, 1451–1456.
  3. Bachtiar, D., et al. (2012). Dynamic mechanical analysis of natural fiber composites. Composites Science and Technology, 72(13), 1637–1643.
  4. Biswal, M., et al. (2017). Nanoclay-reinforced PP/PLF composites: Thermal and mechanical characterization. Composites Part A: Applied Science and Manufacturing, 101, 154–162.
  5. Bismarck, A., et al. (2018). Natural fiber-reinforced polymer composites. Woodhead Publishing
  6. Chemical cloud.com (2025). Retrieved on 24/12/2025. Available at http//chemicalcloud.com
  7. Gajender, S. and Narula, A. K. (2010). Effect of Particle Size and Alkali Treatment of Sugarcane Bagasse on Thermal, Mechanical and Morphological Properties of PVC-Bagase Compoites. Journal of Reinforced Plastics and Composites, Vol. 29. No. 5
  8. George, J., et al. (2005). Dynamic mechanical behavior of natural fiber composites. Composite Interfaces, 12(6), 509–522.
  9. Karmarkar, A., et al. (2007). Mechanical and thermal properties of polypropylene composites reinforced with natural fibers. Composites Part A, 38(2), 367–374.
  10. Kumar, S., and Singh, R. (2020). Effect of nanoclay on polymer nanocomposite thermal stability. Polymer Testing, 86, 106479.
  11. Klyosov, A. (2007). Wood-Plastic Composites. John Wiley and Sons.
  12. Maiti, S., and Bhowmick, A. K. (2006). Dynamic mechanical properties of filled rubber composites. Journal of Applied Polymer Science, 102(1), 318–326.
  13. Nair, S., et al. (2020). Role of surface modification in polymer-clay nanocomposites. Materials Today: Proceedings, 33, 1263–1269.
  14. Ogunwusi, A. A. (2014). Agricultural residues as fillers in polymer composites. Nigerian Journal of Natural Products and Medicine, 18, 46–54.
  15. Rajendran, R., et al. (2021). Dynamic mechanical behavior of nanoclay-reinforced bio-composites. Materials Research Express, 8(1), 015301.
  16. Williams, J. G. (2017). Viscoelastic properties of polymer composites. Journal of Materials Science, 52(9), 5331–5343.
  17. Zhang, J., Chen, Y., and Li, F. (2020). Influence of filler size on thermal stability of PP composites. Polymer Degradation and Stability, 179, 109269.
  18. Zhang, X., and Wang, H. (2019). Thermal and mechanical properties of PP/nanoclay composites. Composites Science and Technology, 181, 107693.
How to Cite

A., M., D, A., B., M. M., L., N., & A., H. (2025). EFFECT OF NANOCLAY (HALLOYSITE) ON THE DYNAMIC MECHANICAL PROPERTIES OF RECYCLED POLYPROPYLENE FILLED NaOH TREATED MAIZE COB POWDER COMPOSITES. Nigerian Journal of Textiles, 11(1), 38-43. https://doi.org/10.67637/njt.2025.altnbesp

M. A., A. D, M. M. B., N. L., and H. A., "EFFECT OF NANOCLAY (HALLOYSITE) ON THE DYNAMIC MECHANICAL PROPERTIES OF RECYCLED POLYPROPYLENE FILLED NaOH TREATED MAIZE COB POWDER COMPOSITES," Nigerian Journal of Textiles, vol. 11, no. 1, pp. 38-43, August 2025. doi: 10.67637/njt.2025.altnbesp

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