Structural Characterization and Tensile Properties of Untreated and Alkali Treated Water Hyacinth Fibre

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Published Feb 27, 2026
https://doi.org/10.55043/jfpc.v5i1.549
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Vol. 5 No. 1 (2026): ARTICLES IN PRESS

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Augustine Uchechukwu Elinwa
Abubakar Tafawa Balewa University
Awari Amma Ishaya
University of Jos

Abstract

Water hyacinth (Eichhornia crassipes) is an abundant aquatic biomass whose utilisation as a reinforcement fibre is limited by high contents of hemicellulose, lignin, waxes, and inorganic deposits. This study evaluates the effect of 10 % NaOH treatment on the structural, chemical, thermal, and mechanical properties of water hyacinth fibres (WHF). Scanning electron microscopy with energy-dispersive spectroscopy (SEM/EDS), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray fluorescence (XRF), thermogravimetric analysis (TGA/DTG), and single-fibre tensile testing were employed. Alkali treatment induced extensive defibrillation of compact fibre bundles into individual microfibrils (≈2–7 µm), transformation of cellulose I to cellulose II, and a marked increase in crystallinity from approximately 25 % to 71 %. Potassium and chloride contents were reduced by more than 99 %, and the maximum thermal degradation temperature increased from about 337 °C to 367 °C. Tensile strength and Young’s modulus increased from 18.4 ± 3.1 MPa to 58.1 ± 2.9 MPa and from 1.42 ± 0.18 GPa to 4.83 ± 0.23 GPa, respectively. These results demonstrate that NaOH treatment effectively purifies and structurally optimises WHF, significantly enhancing its thermal resistance and mechanical performance for sustainable composite reinforcement applications.

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Author Biographies

Augustine Uchechukwu Elinwa, Abubakar Tafawa Balewa University

Civil Engineering Department

Awari Amma Ishaya, University of Jos

Building Department

How to Cite
Elinwa, A. U., & Ishaya, A. A. (2026). Structural Characterization and Tensile Properties of Untreated and Alkali Treated Water Hyacinth Fibre. Journal of Fibers and Polymer Composites, 5(1), 31–42. https://doi.org/10.55043/jfpc.v5i1.549

References

  1. Gopal B. Water hyacinth. Aquatic Plant Studies 1. Amsterdam: Elsevier; 1987. p. xii–47.
  2. Villamagna AM, Murphy BR. Ecological and socio-economic impacts of invasive water hyacinth (Eichhornia crassipes): a review. Freshw Biol 2010;55:282–298. https://doi.org/10.1111/j.1365-2427.2009.02294.x.
  3. Mahardika M, Abral H, Kasim A, Arief S, Asrofi M. Production of nanocellulose from pineapple leaf fibers via high-shear homogenization and ultrasonication. Fibers 2018;6:28. https://doi.org/10.3390/fib6020028.
  4. Tanpichai S, Biswas SK, Witayakran S, Yano H. Optically transparent tough nanocomposites with a hierarchical structure of cellulose nanofiber networks prepared by the Pickering emulsion method. Compos Part A Appl Sci Manuf 2020;132:105811. https://doi.org/10.1016/j.compositesa.2020.105811.
  5. Li X, Tabil LG, Panigrahi S. Chemical treatments of natural fiber for use in natural fiber-reinforced composites: a review. J Polym Environ 2007;15:25–33. https://doi.org/10.1007/s10924-006-0042-3.
  6. Faruk O, Bledzki AK, Fink HP, Sain M. Biocomposites reinforced with natural fibres: 2000–2010. Prog Polym Sci. 2012;37:1552–1596. https://doi.org/10.1016/j.progpolymsci.2012.04.003.
  7. Bledzki AK, Gassan J. Composites reinforced with cellulose based fibres. Prog Polym Sci 1999;24:221–274. https://doi.org/10.1016/S0079-6700(98)00018-5.
  8. Kabir E, Ray S, Kim KH, Yoon HO, Jeon EC, Kim YS, et al. Current status of trace metal pollution in soils affected by industrial activities. Sci World J 2012;2012:916705. https://doi.org/10.1100/2012/916705.
  9. Reddy KO, Guduri BR, Rajulu AV. Structural characterization and tensile properties of Borassus fruit fibers. J Appl Polym Sci 2009;114:603–611. https://doi.org/10.1002/app.30584.
  10. Ray D, Sarkar BK, Rana AK, Bose NR. Effect of alkali treated jute fibres on composite properties. Bull Mater Sci 2001;24:129–135. https://doi.org/10.1007/BF02710089.
  11. Chandrasekar M, Ishak MR, Sapuan SM, Leman Z, Jawaid M. A review on the characterisation of natural fibres and their composites after alkali treatment and water absorption. Plast Rubber Compos 2017;46:119–136. https://doi.org/10.1080/14658011.2017.1298550.
  12. Pickering KL, Efendy MGA, Le TM. A review of recent developments in natural fibre composites and their mechanical performance. Compos Part A Appl Sci Manuf 2016;83:98–112. https://doi.org/10.1016/j.compositesa.2015.08.038.
  13. ASTM International. ASTM D3822/D3822M-14: Standard test method for tensile properties of single textile fibers. West Conshohocken (PA): ASTM International; 2014.
  14. Segal L, Creely JJ, Martin AE Jr, Conrad CM. An empirical method for estimating the degree of crystallinity of native cellulose using the X-ray diffractometer. Text Res J 1959;29:786–794. https://doi.org/10.1177/004051755902901003.
  15. French AD. Idealized powder diffraction patterns for cellulose polymorphs. Cellulose 2014;21:885–896. https://doi.org/10.1007/s10570-013-0030-4.
  16. Rezania S, Alizadeh H, Cho J, Darajeh N, Park J, Hashemi B, et al. Changes in composition and structure of water hyacinth based on various pretreatment methods. BioResources. 2019;14:6088–6099. https://bioresources.cnr.ncsu.edu/resources/changes-in-composition-and-structure-of-water-hyacinth-based-on-various-pretreatment-methods/
  17. Instron. Bluehill® 3 testing software: user’s guide and operator manual. Norwood (MA): Instron Corporation; 2010.
  18. Ajithram A, Jappes JTW, Siva I. Water hyacinth (Eichhornia crassipes) natural fiber composite properties: a review. Mater Today Proc. 2021. https://doi.org/10.1016/j.matpr.2020.08.472.
  19. Syafri E, Jamaluddin, Wahono S, A I, Asrofi M, Sari NH, Fudholi A. Characterization and properties of cellulose microfibers from water hyacinth filled sago starch biocomposites. Int J Biol Macromol 2019;137: 119–125. https://doi.org/10.1016/j.ijbiomac.2019.06.174.