• N.A. Sani
  • M.E.A. Manaf
  • Q. Ahsan
  • E. Osman
  • V.A. Doan Faculty of Materials Science, Phenikaa University
Keywords: Indium-Doped Zinc Oxide, Kenaf Fiber, Sol Gel Coating


Research on conductive coating on natural or plant fibers has gained attention due to arising drive for green technology in electronic and electrical industry. This study aims to investigate the effects of alkaline treatment (2%, 4%, 6% and 8%) and indium doping concentration (In/Zn: 5%, 7%, 9% and 11%) on the surface resistivity and characteristics of indium doped zinc oxide (IZO) coated kenaf fiber. The process starts with chemical treatment of kenaf fiber by sodium hydroxide (NaOH). Then, the treated fibers are immersed in indium doped zinc oxide sol gel and annealed in a furnace. The final samples are characterized using FTIR and SEM-EDX, while the surface resistivity is measured by using Monroe portable resistivity meter. The results show that the alkaline treatment promotes good interfacial bonding between kenaf and IZO coating as demonstrated by smooth coating and low surface resistivity with the best result was obtained using 8% of NaOH concentration. This finding can be attributed mainly to the elimination of impurities, wax, lignin and hemicellulose, of which could act as interface barrier. The doping of indium on ZnO contributes to a significant decrease of surface resistivity of IZO coated kenaf. The resistivity is decreased to the lowest at 9% of indium doping but increases at further addition which is probably due to doping solubility limit.


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Author Biography

V.A. Doan, Faculty of Materials Science, Phenikaa University

2Faculty of Materials Science, Phenikaa University,

Yen Nghia Ward, Ha Dong District,

Hanoi, Vietnam.


[1] S.E. Yamny and M.A. Rafea, “Preparation and characterization of ZnO: In transparent conductor by low cost dip coating technique”, Journal of Modern Physics, vol. 3, no. 9, pp. 1060–1069, 2012.

[2] P. Lekpittaya, N. Yanumet, B.P. Grady and E.A. O’Rear, “Resistivity of conductive polymer-coated fabric”, Journal of Applied Polymer Science, vol. 92, no. 4, pp. 2629–2636, 2004.

[3] S. Vihodceva and S. Kukle, “Cotton textile surface investigation before and after deposition of the ZnO coating by sol-gel method”, Journal of Nano- and Electronic Physics, vol. 5, no. 1, pp. 1–5, 2013.

[4] E. Osman, T. Moriga, K. Murai and A.R.M. Warikh, “Study of morphology and electrical properties of indium zinc oxide-modified kenaf fiber”, Industrial Crops and Products, vol. 100, pp. 171–175, 2017.

[5] R. Bel-Hadj-Tahar and A.B. Mohamed, “Sol-gel processed indium-doped zinc oxide thin films and their electrical and optical properties”, New Journal of Glass and Ceramics, vol. 4, no. 4, pp. 55–65, 2014.

[6] R. Baranyai, Á. Detrich, E. Volentiru and Z. Hórvölgyi, “Peparation and characterization of ZnO and TiO2 sol-gel thin films deposited by dip coating”, Hungarian Journal of Industrial Chemistry, vol. 37, no. 2, pp. 131–137, 2009.

[7] E.B.C. Santos, C.G. Moreno, J.J.P. Barros, D.A.D. Moura, F.D.C. Fim, A. Ries, R.M.R. Wellen and L.B.D Silva, “Effect of alkaline and hot water treatments on the structure and morphology of piassava fibers”, Materials Research, vol. 21, no. 2, pp. 1–11, 2018.

[8] Y. Liu, X. Lv, J. Bao, J. Xie, X. Tang, J. Che, Y. Ma and J. Tong, “Characterization of silane treated and untreated natural cellulosic fibre from corn stalk waste as potential reinforcement in polymer composites”, Carbohydrate Polymers, vol. 218, pp. 179–187, 2019.

[9] M.N. Akhtar, A.B. Sulong, M.F. Radzi, N.F. Ismail, M.R. Raza, N. Muhamad and M.A. Khan, “Influence of alkaline treatment and fiber loading on the physical and mechanical properties of kenaf/polypropylene composites for variety of applications”, Progress in Natural Science: Materials International, vol. 26, no. 6, pp. 657–664, 2016.

[10] D. Ariawan, Z.A.M. Ishak, M.S. Salim, R. M. Taib and M.Z. Ahmad Thirmizir, “Wettability and interfacial characterization of alkaline treated kenaf fiber-unsaturated polyester composites fabricated by resin transfer molding”, Polymer Composites, vol. 38, no. 3, pp. 507–515, 2017.

[11] O. Edynoor, A.R.M. Warikh, T. Moriga, K. Murai, E. Mohammad and M.R. Salleh, “Effect of annealing time on resistivity of kenaf fiber modified indium zinc oxide prepared via dip coating process”, Journal of Advanced Manufacturing Technology, vol. 11, no. 1, pp. 139–150, 2017.

[12] H.M. Akil, M.F. Omar, A.A.M. Mazuki, S. Safiee, Z.A.M. Ishak and A.A. Bakar, “Kenaf fiber reinforced composites: A review”, Materials and Design, vol. 32, no. 8–9, pp. 4107–4121, 2011.

[13] Y.A.E. Shekeil, S.M. Sapuan, A. Khalina, E.S. Zainudin and O.M. Al- Shuja’a, “Effect of alkali treatment on mechanical and thermal properties of kenaf fiber-reinforced thermoplastic polyurethane composite”, Journal of Thermal Analysis and Calorimetry, vol. 109, no. 3, pp. 1435–1443, 2012.

[14] D. Ju, H. Xu, J. Zhang, J. Guo and B. Cao, “Direct hydrothermal growth of ZnO nanosheets on electrode for ethanol sensing”, Sensors and Actuators, B: Chemical, vol. 201, pp. 444–451, 2014.

[15] H. Sosiati, A. Nahyudin, D. A. Wijayanti and K. Triyana, “Effect of alkali treatment and MAPP addition on tensile strength of sisal/polypropylene composites”, Journal of Advanced Manufacturing Technology, vol. 12, no. 2, pp. 65–78, 2018.

[16] N.A. Ibrahim, K. A. Hadithon and K. Abdan, “Effect of fiber treatment on mechanical properties of kenaf fiber-ecoflex composites”, Journal of Reinforced Plastics and Composites, vol. 29, no. 14, pp. 2192–2198, 2010.

[17] S. Ebrahimiasl, A. Zakaria, A. Kassim and S.N. Basri, “Novel conductive polypyrrole/zinc oxide/chitosan bionanocomposite: synthesis, characterization, antioxidant, and antibacterial activities”, International Journal of Nanomedicine, vol. 10, no. 1, pp. 217–227, 2014.

[18] S. Edinger, N. Bansal, M. Bauch, R.A. Wibowo, G. Ujvari, R. Hamid, G. Trimmel and T. Dimopoulos, “Highly transparent and conductive indium-doped zinc oxide films deposited at low substrate temperature by spray pyrolysis from water-based solutions”, Journal of Materials Science, vol. 52, no. 14, pp. 8591–8602, 2017.

[19] N.A. Dahoudi, A. Alkahlout, S. Heusing, P.H. Engel, R. Karos and P. Oliveira, “Indium doped zinc oxide nanopowders for transparent conducting coatings on glass substrates”, Journal of Sol-Gel Science and Technology, vol. 67, no. 3, pp. 556–564, 2013.

[20] S.S. Shinde, P.S. Shinde, C.H. Bhosale and K.Y. Rajpure, “Optoelectronic properties of sprayed transparent and conducting indium doped zinc oxide thin films”, Journal of Physics D: Applied Physics, vol. 41, no. 10, pp. 1-6, 2008.
How to Cite
Sani, N., Manaf, M., Ahsan, Q., Osman, E., & Doan, V. (2020). ELECTRICAL RESISTIVITY AND CHARACTERIZATION OF INDIUM DOPED ZINC OXIDE COATED KENAF FIBER. Journal of Advanced Manufacturing Technology (JAMT), 14(1). Retrieved from https://jamt.utem.edu.my/jamt/article/view/5861