Effect of impregnation on hybrid mesoporous silica / kenaf reinforced epoxy composites in term of flexural, compressive and water absorption properties

F. Bajuri; N. Mazlan; M. R. Ishak; M. K. A. Uyup

doi:10.15282/jmes.14.4.2020.19.0593

Authors

F. Bajuri Aerospace Engineering Department, Faculty of Engineering, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia. Phone: +60397696403
N. Mazlan Aerospace Engineering Department, Faculty of Engineering, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia. Phone: +60397696403
M. R. Ishak Aerospace Engineering Department, Faculty of Engineering, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia. Phone: +60397696403
M. K. A. Uyup Forest Products Division, Forest Research Institute Malaysia (FRIM), 52109, Kepong, Kuala Lumpur, Selangor, Malaysia

DOI:

https://doi.org/10.15282/jmes.14.4.2020.19.0593

Keywords:

kenaf, mesoporous silica, hybrid composites, natural fibre reinforced composites

Abstract

In this work, mesoporous silica with designated amount was added in kenaf/epoxy composites to improve the mechanical properties of the composite and reduce the water uptake of fabricated composites. The composites were fabricated using hot press method (HP) and impregnation method (IMP). For HP specimens, silica was dispersed into epoxy resin using homogenizer before being applied to the kenaf mat and subsequently hot pressed. While for IMP specimens, the kenaf mat was placed inside the silica/epoxy solution under 600 mm Hg impregnation pressure before being hot pressed. The results for flexural properties revealed that IMP specimen with 40 vol% of kenaf fibre and 5 vol% of silica have the highest strength and modulus at 78.6 MPa and 5.11 GPa respectively. Same trend can be seen for compressive properties as the same specimen had the highest compressive strength and modulus at 69.3 MPa and 1.81 GPa respectively. Finally for water absorption properties, IMP specimens had a reduction in water uptake compared to its HP specimen counterparts with the same kenaf and silica content. IMP specimen with 60 vol% kenaf and 5 vol% silica had the lowest water uptake after 90 days of immersion in distilled water at 13.5% increase in weight.

References

S. Ochi, “Mechanical properties of kenaf fibers and kenaf/PLA composites,” Mechanics of Materials, vol. 40, no. 4–5, pp. 446–452, 2008, doi: 10.1016/j.mechmat.2007.10.006.

Y. Xue, Y. Du, S. Elder, K. Wang, and J. Zhang, “Temperature and loading rate effects on tensile properties of kenaf bast fiber bundles and composites,” Composites Part B: Engineering, vol. 40, no. 3, pp. 189–196, 2009, doi: 10.1016/j.compositesb.2008.11.009.

M. de F. V. Marques, R. P. Melo, R. da S. Araujo, J. do N. Lunz, and V. de O. Aguiar, “Improvement of mechanical properties of natural fiber-polypropylene composites using successive alkaline treatments,” Journal of Applied Polymer Science, vol. 132, no. 12, pp. 1–12, 2015, doi: 10.1002/app.41710.

S. J. Kim, J. B. Moon, G. H. Kim, and C. S. Ha, “Mechanical properties of polypropylene/natural fiber composites: Comparison of wood fiber and cotton fiber,” Polymer Testing, vol. 27, no. 7, pp. 801–806, 2008, doi: 10.1016/j.polymertesting.2008.06.002.

B. H. Lee, H. S. Kim, S. Lee, H. J. Kim, and J. R. Dorgan, “Bio-composites of kenaf fibers in polylactide: Role of improved interfacial adhesion in the carding process,” Composites Science and Technology, vol. 69, no. 15–16, pp. 2573–2579, 2009, doi: 10.1016/j.compscitech.2009.07.015.

O. M. L. Asumani, R. G. Reid, and R. Paskaramoorthy, “The effects of alkali-silane treatment on the tensile and flexural properties of short fibre non-woven kenaf reinforced polypropylene composites,” Composites Part A: Applied Science and Manufacturing, vol. 43, no. 9, pp. 1431–1440, 2012, doi: 10.1016/j.compositesa.2012.04.007.

A. Chafidz, M. Rizal, R. M. Faisal, M. Kaavessina, D. Hartanto, and S. M. AlZahrani, “Processing and properties of high density polyethylene/date palm fiber composites prepared by a laboratory mixing extruder,” Journal of Mechanical Engineering and Sciences, vol. 12, no. 3, pp. 3771–3785, 2018, doi: 10.15282/jmes.12.3.2018.2.0333.

S. Serizawa, K. Inoue, and M. Iji, “Kenaf-fiber-reinforced poly(lactic acid) used for electronic products,” Journal of Applied Polymer Science, vol. 100, no. 1, pp. 618–624, 2006, doi: 10.1002/app.23377.

T. Nishino, K. Hirao, M. Kotera, K. Nakamae, and H. Inagaki, “Kenaf reinforced biodegradable composite,” Composites Science and Technology, vol. 63, no. 9, pp. 1281–1286, 2003, doi: 10.1016/S0266-3538(03)00099-X.

J. Summerscales, A. Virk, and W. Hall, “A review of bast fibres and their composites: Part 3 - Modelling,” Composites Part A: Applied Science and Manufacturing, vol. 44, no. 1, pp. 132–139, 2013, doi: 10.1016/j.compositesa.2012.08.018.

N. Sallih, P. Lescher, and D. Bhattacharyya, “Factorial study of material and process parameters on the mechanical properties of extruded kenaf fibre/polypropylene composite sheets,” Composites Part A: Applied Science and Manufacturing, vol. 61, pp. 91–107, 2014, doi: 10.1016/j.compositesa.2014.02.014.

H. M. Akil, M. F. Omar, A. A. M. Mazuki, S. Safiee, Z. A. M. Ishak, and A. Abu Bakar, “Kenaf fiber reinforced composites: A review,” Materials & Design, vol. 32, no. 8–9, pp. 4107–4121, 2011, doi: 10.1016/j.matdes.2011.04.008.

K. L. Pickering, M. G. A. Efendy, and T. M. Le, “A review of recent developments in natural fibre composites and their mechanical performance,” Composites Part A: Applied Science and Manufacturing, vol. 83, pp. 98–112, 2016, doi: 10.1016/j.compositesa.2015.08.038.

N. Saba, M. T. Paridah, and M. Jawaid, “Mechanical properties of kenaf fibre reinforced polymer composite: A review,” Construction and Building Materials, vol. 76, pp. 87–96, 2015, doi: 10.1016/j.conbuildmat.2014.11.043.

M. N. A. Nordin et al., “Tensile and impact properties of pulverized oil palm fiber reinforced polypropylene composites: A comparison study with wood fiber reinforced polypropylene composites,” Journal of Mechanical Engineering and Sciences, vol. 12, no. 4, pp. 4191–4202, 2018, doi: 10.15282/jmes.12.4.2018.15.0361.

M. S. M. Basri, N. Mazlan, and F. Mustapha, “Effects of stirring speed and time on water absorption performance of silica aerogel / epoxy nanosomposite,” vol. 10, no. 21, pp. 9982–9991, 2015.

M. S. Meon, M. F. Othman, H. Husain, M. F. Remeli, and M. S. M. Syawal, “Improving tensile properties of kenaf fibers treated with sodium hydroxide,” Procedia Engineering, vol. 41, no. Iris, pp. 1587–1592, 2012, doi: 10.1016/j.proeng.2012.07.354.

P. J. Herrera-Franco and A. Valadez-Gonzalez, “A study of the mechanical properties of short natural-fiber reinforced composites,” Composites Part B: Engineering, vol. 36, no. 8, pp. 597–608, 2005, doi: 10.1016/j.compositesb.2005.04.001.

M. H. Kothmann, R. Zeiler, A. Rios De Anda, A. Brückner, and V. Altstädt, “Fatigue crack propagation behaviour of epoxy resins modified with silica-nanoparticles,” Polymer (Guildf)., vol. 60, pp. 157–163, 2015, doi: 10.1016/j.polymer.2015.01.036.

M. R. Ishak, Z. Leman, M. S. Salit, M. Z. A. Rahman, M. K. Anwar Uyup, and R. Akhtar, “IFSS, TG, FT-IR spectra of impregnated sugar palm (Arenga pinnata) fibres and mechanical properties of their composites,” Journal of Thermal Analysis and Calorimetry, vol. 111, no. 2, pp. 1375–1383, 2013, doi: 10.1007/s10973-012-2457-5.

ASTM D790-03, “Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulation Materials,” ASTM Stand., pp. 1–11, 2003.

ASTM D695-02a, “Standard Test Method for Compressive Properties of Rigid Plastics,” ASTM Stand., pp. 1–8, 2003.

ASTM D570-98, “Standard Test Method for Water Absorption of Plastics,” ASTM Stand., pp. 1–4, 1998.

V. Fiore, G. Di Bella, and A. Valenza, “The effect of alkaline treatment on mechanical properties of kenaf fibers and their epoxy composites,” Composites Part B: Engineering, vol. 68, pp. 14–21, 2015, doi: 10.1016/j.compositesb.2014.08.025.

G. N. Farahani, I. Ahmad, and Z. Mosadeghzad, “Effect of Fiber Content, Fiber Length and Alkali Treatment on Properties of Kenaf Fiber/UPR Composites Based on Recycled PET Wastes,” Polymer-Plastics Technology and Engineering, vol. 51, no. 6, pp. 634–639, 2012, doi: 10.1080/03602559.2012.659314.