Optimization of Mechanical Properties of a Banana/Recycled PET Fibre Composite

International Journal of Mechanical Engineering

© 2025 by SSRG - IJME Journal

Volume 12 Issue 5

Year of Publication : 2025

Authors : N Z Nkomo, A A Alugongo, A J Mbatha

10.14445/23488360/IJME-V12I5P109

How to Cite?

N Z Nkomo, A A Alugongo, A J Mbatha, "Optimization of Mechanical Properties of a Banana/Recycled PET Fibre Composite," SSRG International Journal of Mechanical Engineering, vol. 12,  no. 5, pp. 81-86, 2025. Crossref, https://doi.org/10.14445/23488360/IJME-V12I5P109

Abstract:

Sustainability and environmental awareness have resulted in natural fibres gaining significant traction in the past few years in composite manufacture. Natural fibres are relatively inexpensive and biodegradable, which makes their disposal easier. There has been high pollution of single-use polyethylene terephthalate plastic bottles. The study’s main objective is to optimize the mechanical properties of recycled polyethylene terephthalate and banana fibre hybrid composite. Banana fibres were extracted using a combination of water retting and mechanical decortication. Thereafter, the extracted banana fibres were treated with sodium hydroxide solution and then characterized. During characterization, it was found that banana fibres had a moisture content of 10%, a fibre diameter of 166 μm and an average tensile strength of 58 MPa. Using hand layup, a hybrid composite with the banana fibres and the recycled polyethylene terephthalate fibres was used fabricated the hybrid composite with polyester as the resin. The mass fraction of the banana fibre was increased from 0-10%, and that of recycled polyethylene terephthalate was increased from 0-15%. The hybrid composite was fabricated using the hand layup method. The density of the composite ranged from 480 to 1025 kgm-3, and the tensile strength ranged between 9.01 to 20 MPa, compression strength from 41.7 MPa to 152.8 MPa and flexural strength from 5.6 MPa to 48 MPa. Numerical modelling of the composite properties was done using Minitab software to obtain the optimum mechanical strength properties. Additional tests like flammability and hardness tests can be carried out as a recommendation for further study. Furthermore, characterization using artificial neural networks can be done to improve the prediction of the mechanical properties of the composite.

Keywords:

Banana fibre, Composite, Numerical modelling, Polyethylene terephthalate.

References:

[1] Nicolas Neitzel et al., “Alternative Materials from Agro-Industry for Wood Panel Manufacturing-A Review,” Materials, vol. 15, no. 13, pp. 1-27, 2022.
[CrossRef] [Google Scholar] [Publisher Link]
[2] Paulo Peças et al., “Natural Fibre Composites and Their Applications: A Review,” Journal of Composites Science, vol. 2, no. 4, pp. 1-20, 2018.  
[CrossRef] [Google Scholar] [Publisher Link]
[3] Mariana Doina Banea, “Natural Fibre Composites and Their Mechanical Behaviour,” Polymers, vol. 15, no. 5, pp. 1-3, 2023.  
[CrossRef] [Google Scholar] [Publisher Link]
[4] Alexandre L. Pereira et al., “Mechanical and Thermal Characterization of Natural Intralaminar Hybrid Composites Based on Sisal,” Polymers, vol. 12, no. 4, pp. 1-16, 2020.
[CrossRef] [Google Scholar] [Publisher Link]
[5] Chensong Dong, “Review of Natural Fibre-Reinforced Hybrid Composites,” Journal of Reinforced Plastics and Composites, vol. 37, no. 5, pp. 331-348, 2018.
[CrossRef] [Google Scholar] [Publisher Link]
[6] Parul Sahu, and MK Gupta, “Sisal (Agave sisalana) Fibre and its Polymer-Based Composites: A Review on Current Developments,” Journal of Reinforced Plastics and Composites, vol. 36, no. 24, pp. 1759-1780, 2017.
[CrossRef] [Google Scholar] [Publisher Link]
[7] Yentl Swolfs, Larissa Gorbatikh, and Ignaas Verpoest, “Fibre Hybridisation in Polymer Composites: A Review,” Composites Part A: Applied Science and Manufacturing, vol. 67, pp. 181-200, 2014.
[CrossRef] [Google Scholar] [Publisher Link]
[8] T. Gurunathan, Smita Mohanty, and Sanjay K. Nayak, “A Review of the Recent Developments in Biocomposites Based on Natural Fibres and their Application Perspectives,” Composites Part A: Applied Science and Manufacturing, vol. 77, pp. 1-25, 2015.
[CrossRef] [Google Scholar] [Publisher Link]
[9] C.I. Madueke, O.M. Ekechukwu, and F.O. Kolawole, “A Review on Coir Fibre, Coir Fibre Reinforced Polymer Composites and their Current Applications,” Journal of Renewable Materials, vol. 12, no. 12, pp. 2017-2047, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[10] Al Ichlas Imran et al., “Advancements in Sustainable Material Development: A Comprehensive Review of Coir Fiber and its Composites,” Mechanical Engineering for Society and Industry, vol. 4, no. 3, pp. 415-454, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[11] Kyle Pender, and Liu Yang, “Glass Fibre Composites Recycling Using the Fluidised Bed: A Comparative Study into the Carbon Footprint in the UK,” Sustainability, vol. 16, no. 3, pp. 1-23, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[12] Ashwani Kumar Singh, Raman Bedi, and Akhil Khajuria, “A Review of Composite Materials Based on Rice Straw and Future Trends for Sustainable Composites,” Journal of Cleaner Production, vol. 457, pp. 1-18, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[13] Mohammed Y. Abdellah et al., “Mechanical, Thermal, and Acoustic Properties of Natural Fibre-Reinforced Polyester,” Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, vol. 238, no. 3, pp. 1436-1448, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[14] Tomy Muringayil Joseph et al., “Polyethylene Terephthalate (PET) Recycling: A Review,” Case Studies in Chemical and Environmental Engineering, vol. 9, pp. 1-16, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[15] Tianxiang Ren et al., “Recycling and High-Value Utilization of Polyethylene Terephthalate Wastes: A Review,” Environmental Research, vol. 249, 2024.
[CrossRef] [Google Scholar] [Publisher Link]
[16] Geoffrey Lonca et al., “Assessing Scaling Effects of Circular Economy Strategies: A Case Study on Plastic Bottle Closed-Loop Recycling in the USA PET Market,” Resources, Conservation and Recycling, vol. 162, 2020.
[CrossRef] [Google Scholar] [Publisher Link]
[17] Antonio F. Ávila, and Marcos V. Duarte, “A Mechanical Analysis on Recycled PET/HDPE Composites,” Polymer Degradation and Stability, vol. 80, no. 2, pp. 373-382, 2003.
[CrossRef] [Google Scholar] [Publisher Link]
[18] ArunRamnath Ramachandran et al., “Modification of Fibers and Matrices in Natural Fiber Reinforced Polymer Composites: A Comprehensive Review,” Macromolecular Rapid Communications, vol. 43, no. 17, pp. 1-38, 2022.
[CrossRef] [Google Scholar] [Publisher Link]
[19] Venkata Ramana Mula, ArunRamnath Ramachandran, and Thyla Pudukarai Ramasamy, “A Review on Epoxy Granite Reinforced Polymer Composites in Machine Tool Structures – Static, Dynamic and Thermal Characteristics,” Polymer Composites, vol. 44, no. 4, pp. 2022-2070, 2023.
[CrossRef] [Google Scholar] [Publisher Link]
[20] S. Gokulkumar et al., “Acoustical Analysis and Drilling Process Optimization of Camellia Sinensis/Ananas Comosus/GFRP/Epoxy Composites by TOPSIS for Indoor Applications,” Journal of Natural Fibers, vol. 18, no. 12, pp. 2284-2301, 2021.
[CrossRef] [Google Scholar] [Publisher Link]
[21] S. Omprakasam, and R. Raghu, “Mechanical Behavior of Banana Fiber,” Journal of Mechanical Science and Technology, vol. 38, pp. 2943-2949, 2024.
[CrossRef] [Google Scholar] [Publisher Link]