Effect of Kenaf Alkalization Treatment on Morphological and Mechanical Properties of Epoxy/Silica/Kenaf Composite

  • Authors

    • Che Nor Aiza Jaafar
    • Muhammad Asyraf Muhammad Rizal
    • Ismail Zainol
    2018-11-30
    https://doi.org/10.14419/ijet.v7i4.35.22743
  • Impact Test, Flexural Test, Kenaf, Natural fiber, Scanning Electron Microscopy

  • The mechanical performance of silica modified epoxy at various concentration of sodium hydroxide for surface treatment of multi-axial kenaf has been analyzed. Epoxy resin with amine hardener was modified with silica powder at 20 phr and toughened by treated kenaf fiber that immerses in various concentrations of sodium hydroxide (NaOH) ranging from 0% to 9% of weight. The composite was analyzed through differential scanning calorimetry (DSC) to ensure complete curing process. The mechanical properties of the composites were analyzed through flexural test, Charpy impact test and DSC to ensure the complete curing process. DSC analysis results show epoxy sample was completely cured at above 73°C that verifies the curing temperature for preparation for the composite. Hence, 3% NaOH treated composite exhibits the best mechanical properties, with 10.6 kJ/m2 of impact strength, 54.1 MPa of flexural strength and 3.5 GPa of flexural modulus. It is due to the improvement of fiber-matrix compatibility. Analysis by SEM also revealed that a cleaner surface of kenaf fiber treated at 3% NaOH shown cleaner surface, thus, in turn, improve surface interaction between fiber and matrix of the composite. The composites produced in this work has high potential to be used in automotive and domestics appliances.

  • References

    1. [1] World Commission on Environment and Development (WCED), Our common future: the Brundtland report on environment and development, Oxford University Press, (1987), 1-10.

      [2] Sanjay MR & Yogesha B (2017). Studies on natural/glass fiber reinforced polymer hybrid composite: an evolution. Ma-ter. Tod. Proc. 2, 2739-2747.

      [3] Vijiya, Ramnath, B, Manickavasagam VM, Elanchezhian C, Vinodh KC. & Karthik S (2014) Determination of mechanical properties of intra-layer abaca-jute-glass fibre composite. Mater. Des 60, 643-652.

      [4] Yan, L., Chouw, N. and Jayaraman, K. (2014). Flax fibre and its composites – a review. Compos Part B. 56, 296-317.

      [5] Panayiotis G, Aggelos C, Stefanos K & Evagelia K (2016). The ef-fect of surface treatment on performance of flax/biogradible compo-sites. Composites Part B, 106, 88-98.

      [6] Fiore V, Bella G & Valenza A (2015). The effect of alkaline treatment on mechanical properties of kenaf fibers and their epoxy composites. Composites: Part B, 14-21.

      [7] Bajuri, F., Mazlan, N. and Ishak, M. R. (2016). Flexural Properties of Hybrid Hydrophilic Silica Nanoparticles/Kenaf Reinforced Epoxy Composites. ARPN Journal of Engineering and Applied Sciences, pages: 12343-12346.

      [8] Vilay V, Mariatti M, Mat Taib R & Todo M (2008). Effect of fibre surface and fibre loading on the properties of bagasse fiber- reinforced unsaturated polyester composites. Compose SciTechnol 2008. 68, 631-638.

      [9] Marjetka, C. (2013). Nanosilica-Reinforced Polymer Composites. Materials and technology. Pregledniclanek. 47(3), pages: 285-293.

      [10] Salit MS (2014). Tropical Natural Fibre Composites, Engineering Materials. Springer Press, (2014) 6-7, 24-26

      [11] Kalia S, Kaith B. S. and Kaur (2009). Pre-treatments of natural fibers and their application as reinforcing material in polymer composites – a review. Polym Eng Sci 2009. 49, 1253-1272.

      [12] Kasiviswanathan S, Santhanam K & Kumaravel A (2015). Evalua-tion of mechanical properties of natural hybrid fibers, reinforced polyster composite material. Carbon – Sci Tech 2015. 7(4), 43-49.

      [13] Manikandan Nair KC, Thomas S & Groeninckx G (2001). Thermal and dynamic mechanical analysis of short sisal fibre reinforced pol-ystyrene composites. Compos Sci Technol. 61(16), 2519-2529.

      [14] Xue L, Tabil LG & Panigrahi S (2007). Chemical Treatments of Natural Fiber for Use in Natural Fiber-Reinforced Composites: A Review. J Polym Environ., 25-33.

      [15] Kok, YH (2016). ‘Development of High Impact Composite Using Modified Epoxy for Potential Automotive Application’. Bachelor Thesis, Universiti Putra Malaysia, Serdang, Malaysia, 41-44.

      [16] Ramesh M (2016). Kenaf (Hibiscus cannabinus L.) fibre based bio-materials: A review on processing and properties. Progress in Material Science, 78-79, 1-92

      [17] Yousif BF, Shalwan A, Chin CW & Ming KC (2012). Flexural properties of treated and untreated kenaf/epoxy composites. Materials & Design, 40, 378–385.

      [18] Liang YL & Pearson RA (2009). Toughening mechanisms in epoxy-silica nanocomposites (ESNs). Polymer, 50, 4895-4905.

      [19] Liu, S., Fan, X. and He, C. (2016). Improving the fracture toughness of epoxy with nanosilica-rubber core-shell nanoparticles. Composites Science and Technology, 123, 132-140.

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    Jaafar, C. N. A., Rizal, M. A. M., & Zainol, I. (2018). Effect of Kenaf Alkalization Treatment on Morphological and Mechanical Properties of Epoxy/Silica/Kenaf Composite. International Journal of Engineering & Technology, 7(4.35), 258-263. https://doi.org/10.14419/ijet.v7i4.35.22743