Fabrication and Characterization of Sugarcane Bagasse/Coconut Shell Particle-Reinforced Hybrid Polymer Biocomposites for Compostable Packaging

Abstract

Reinforcement of polymers with natural fillers has gained significant attention due to growing environmental concerns, the need for sustainability, and the limited viability of synthetic materials. This study addressed these challenges by developing and characterizing epoxy-based hybrid biocomposites reinforced with sugarcane bagasse and coconut shell particles. The biocomposites were fabricated using the stir casting method, and their microstructural, mechanical, and biodegradability properties were systematically evaluated. Experimental results revealed that the biocomposite containing 12 wt. % hybrid fillers exhibited optimal performance, with a 32.2 % increase in hardness (24.87 HV), a 12.3 % improvement in compressive strength (67.99 MPa), and a 4.1 % enhancement in impact energy (6.16 J) compared to the control sample. Scanning Electron Microscopy (SEM) analysis confirmed uniform filler dispersion and strong matrix–particle interfacial bonding. Biodegradability tests showed the highest weight loss of 18.5 % after seven months, indicating effective compostability. The synergistic reinforcement from sugarcane bagasse and coconut shell significantly enhanced both mechanical and environmental performance, demonstrating the composite’s potential for sustainable packaging applications.

Keywords

• Sugarcane bagasse
• Coconut shell
• Hybrid polymer biocomposites
• Mechanical properties
• Biodegradability

Fabrication and Characterization of Sugarcane Bagasse/Coconut Shell Particle-Reinforced Hybrid Polymer Biocomposites for Compostable Packaging

Abstract

Reinforcement of polymers with natural fillers has gained significant attention due to growing environmental concerns, the need for sustainability, and the limited viability of synthetic materials. This study addressed these challenges by developing and characterizing epoxy-based hybrid biocomposites reinforced with sugarcane bagasse and coconut shell particles. The biocomposites were fabricated using the stir casting method, and their microstructural, physical, mechanical, and biodegradability properties were systematically evaluated. Experimental results revealed that the biocomposite containing 12 wt. % hybrid fillers exhibited optimal performance, with a 32.2 % increase in hardness (24.87 HV), a 12.3 % improvement in compressive strength (67.99 MPa), and a 4.1 % enhancement in impact energy (6.16 J) compared to the control sample. Scanning Electron Microscopy (SEM) analysis confirmed uniform filler dispersion and strong matrix–particle interfacial bonding. Biodegradability tests showed the highest weight loss of 18.5 % after seven months, indicating effective compostability. The synergistic reinforcement from sugarcane bagasse and coconut shell significantly enhanced both mechanical and environmental performance, demonstrating the composite’s potential for sustainable packaging applications.

Keywords

• Sugarcane bagasse
• Coconut shell
• Hybrid polymer biocomposites
• Mechanical properties
• Biodegradability

References

1. Abdollahiparsa, H., Shahmirzaloo, A., Teuffel, P., & Blok, R. (2023). A review of recent developments in structural applications of natural fiber-reinforced composites (NFRCs). Composites and Advanced Materials, 32, 1-18. https://doi.org/10.1177/26349833221147540
2. Abdul-Khalil, H. P. S., Davoudpour, Y., Islam, M. N., Mustapha, A., Sudesh, K., Dungani, R., & Jawaid, M. (2014). Production and modification of nanofibrillated cellulose using various mechanical processes: A review. Carbohydrate Polymers, 99, 649-665. https://doi.org/10.1016/j.carbpol.2013.08.069
3. Akorede, A. O., Dauda, B., & Adeyemi, M. M. (2019). The influence of chemical treatment on mechanical properties and biodegradability of sugarcane fibre filler epoxy resin. American Journal of Engineering Research, 8(1), 233-242.
4. Asim, M., Abdan, K., Jawaid, M., Nasir, M., Dashtizadeh, Z., Ishak, M. R., & Hoque, M. E. (2015). A review on pineapple leaves and its composites. International Journal of Polymer Science, 2015, Article 950567. https://doi.org/10.1155/2015/950567
5. ASTM International. (2018a). Standard test methods for determining the Izod pendulum impact strength of plastics (ASTM D256-10). https://doi.org/10.1520/D0256-10R18
6. ASTM International. (2018b). Standard test method for determining aerobic biodegradation of plastic materials in soil (ASTM D5988-18). https://doi.org/10.1520/D5988-18
7. ASTM International. (2024). Standard test method for compressive properties of polymer matrix composite materials with unsupported gage section by shear loading (ASTM D3410/D3410M-16). https://doi.org/10.1520/D3410_D3410M-16R24
8. ASTM International. (2022). Standard test method for micro indentation hardness of materials (ASTM E384-22). https://doi.org/10.1520/E0384-22

9. Babu, R. D., Kumar, S., & Raju, J. S. (2021). Review on mechanical investigation on sugarcane and glass fibre composite material. Journal of Critical Reviews, 8(1), 385-389. https://jcreview.com/archives/volume-8/issue-1/6535
10. Balaji, A., Karthikeyan, B., & Swaminathan, J. (2019). Comparative mechanical, thermal, and morphological study of untreated and NaOH-treated bagasse fiber-reinforced cardanol green composites. Advanced Composites and Hybrid Materials, 2, 125-132. https://doi.org/10.1007/s42114-019-00079-7
11. Bam, S. A., Gundu, D. T., & Onu, F. A. (2019). The effect of chemical treatments on the mechanical and physical properties of bagasse filler reinforced low-density polyethylene composite. American Journal of Engineering Research, 8(4), 95-98.
12. Bolasodun, B., Durowaye, S., & Akano, T. (2022). Synthesis and characterization of sugarcane bagasse and pineapple leaf particulate reinforced polyester resin matrix composites. Gazi University Journal of Science, 35(3), 1091-1100. https://doi.org/10.35378/gujs.787964
13. Cerqueira, E. F., Baptista, C. A. R. P., & Mulinari, D. R. (2011). Mechanical behaviour of polypropylene reinforced sugarcane bagasse fibers composites. Procedia Engineering, 10, 2046-2051. https://doi.org/10.1016/j.proeng.2011.04.339
14. Dehury, J., Mohanty, J. R., Biswas, S., & Bhagat, V. (2017). Physical, mechanical and water absorption behavior of bi-directional jute/glass fiber reinforced epoxy composites. International Journal of Engineering Research, 6(1), 1-6.
15. Durowaye, S., Kanu, D., Awotunde, O., & Alao, S. (2022). Effect of particulate of mild steel and aluminium dross on the physical and mechanical properties of epoxy-resin matrix composites. Scientific Journal of Mehmet Akif Ersoy University, Techno-Science, 5(1), 1-8.
16. Fadare, O. B., Adewuyi, B. O., Oladele, I. O., & Ukoba, K. (2021). A review on waste-wood reinforced polymer matrix composites for sustainable development. IOP Conference Series: Materials Science and Engineering, 1107, Article 012057. https://doi.org/10.1088/1757-899x/1107/1/012057
17. Fekiač, J. J., Krbata, M., Kohutiar, M., Janík, R., Kakošová, L., Breznická, A., Eckert, M., & Mikuš, P. (2025). Comprehensive review: Optimization of epoxy composites, mechanical properties, & technological trends. Polymers, 17(3), Article 271. https://doi.org/10.3390/polym17030271
18. Fong, A. L., Khandoker, N. A. N., & Debnath, S. (2018). Development and characterization of sugarcane bagasse fiber and nano-silica reinforced epoxy hybrid composites. IOP Conference Series: Materials Science and Engineering, 344, Article 012029. https://doi.org/10.1088/1757-899X/344/1/012029
19. Furgier, V., Root, A., Heinmaa, I., Zamani, A., & Åkesson, D. (2024). Development and characterisation of composites prepared from PHBV compounded with organic waste reinforcements, and their soil biodegradation. Materials, 17(3), Article 768. https://doi.org/10.3390/ma17030768
20. Future Market Insights, Inc. (2026). Global sustainable packaging market to reach USD 421.6 billion by 2036 [Market forecast]. AccessNewswire. https://www.accessnewswire.com/newsroom/en/business-and-professional-services/global-sustainable-packaging-market-to-reach-usd-421.6-billion-b-1135489
21. Haque, S., Karim, F. E., Islam, M. R., & Siddique, A. B. (2023). Mechanical characterization of luffa-bagasse fiber reinforced polymer-based hybrid composite. Textile & Leather Review, 6(1), 252-270. https://doi.org/10.31881/tlr.2022.111
22. Husseinsyah, S., & Mostapha, M. (2011). The effect of filler content on properties of coconut shell filled polyester composites. Malaysian Polymer Journal, 6(1), 87-97.
23. Jaramillo, A. F., Medina, C., Flores, P., Canales, C., Maldonado, C., Castaño Rivera, P., Rojas, D., & Meléndrez, M. F. (2020). Improvement of thermomechanical properties of composite based on hydroxyapatite functionalized with alkylsilanes in epoxy matrix. Ceramic International, 46(6), 8368-8378. https://doi.org/10.1016/j.ceramint.2019.12.069
24. Jawaid, M., & Khalil, H. P. S. A. (2011). Cellulosic/synthetic fibre reinforced polymer hybrid composites: A review. Carbohydrate Polymers, 86(1), 1-18. https://doi.org/10.1016/j.carbpol.2011.04.043
25. Kaewpirom, S., & Worrarat, C. (2014). Preparation and properties of pineapple leaf fiber reinforced poly(lactic acid) green composites. Fibers and Polymers, 15(7), 1469-1477. https://doi.org/10.1007/s12221-014-1469-0
26. Kalia, S., Dufresne, A., Cherian, B. M., Kaith, B. S., Avérous, L., Njuguna, J., & Nassiopoulos, E. (2011). Cellulose-based bio-and nanocomposites: A review. International Journal of Polymer Science, 2011, Article 837875. https://doi.org/10.1155/2011/837875
27. Kamaruddin, S. H., Rayung, M., Abu, F., Ahmad, S., Fadil, F., Karim, A. A., Norizan, M. N., Sarifuddin, N., Mat-Desa, M. S. Z., Mohd-Basri, M. S., Samsudin, H., & Abdullah, L. C. (2022). A review on antimicrobial packaging from biodegradable polymer composites. Polymers, 14(1), Article 174. https://doi.org/10.3390/polym14010174
28. Kuciel, S., Rusin-Żurek, K., & Kurańska, M. (2024). The influence of filler particle size on the strength properties and mechanical energy dissipation capacity of biopoly (ethylene terephthalate) BioPET/eggshell biocomposites. Recycling, 9(5), Article 88. https://doi.org/10.3390/recycling9050088
29. Kuforiji, C., Durowaye, S., Odunitan, O., Kassim, K., & Lawal, G. (2023). Influence of sawdust particles reinforcement on physical and mechanical properties of high-density polyethylene (HDPE) matrix composites. Kathmandu University Journal of Science, Engineering and Technology, 17(1), 1-7. https://doi.org/10.3126/kuset.v17i1.62382
30. Makinde-Isola, B. A., Taiwo, A. S., Oladele, I. O., Akinwekomi, A. D., Adelani, S. O., & Onuh, L. N. (2023). Development of sustainable and biodegradable materials: A review on banana and sisal fibre based polymer composites. Journal of Thermoplastic Composite Materials, 37(4), 1-21. https://doi.org/10.1177/08927057231186324
31. Mustapha, K., Sogoye, M., Ottan, A. S., Danyuo, Y., Azeko, S. T., & Annan, E. (2021). Strength and fracture resistance of cellulose fiber reinforced cement composite. Technoscience Journal for Community Development in Africa, 2(1), 29-37.
32. Nguyen, D. D., Vadivel, M., Shobana, S., Arvindnarayan, S., Dharmaraja, J., Priya, R. K., Nguyen-Tri, P., Kumar, G., & Chang, S. W. (2020). Fabrication and modeling of prototype bike silencer using hybrid glass and chicken feather fiber/hydroxyapatite reinforced epoxy composites. Progress in Organic Coatings, 148, Article 105871. https://doi.org/10.1016/j.porgcoat.2020.105871
33. Ni, Z., Shi, J., Li, M., Lei, W., & Yu, W. (2023). FDM 3D printing and soil-burial-degradation behaviors of residue of Astragalus particles/thermoplastic starch/poly(lactic acid) biocomposites. Polymers, 15(10), Article 2382. https://doi.org/10.3390/polym15102382
34. Nourbakhsh, A., & Ashori, A. (2010). Wood plastic composites from agro-waste materials: Analysis of mechanical properties. Bioresource Technology, 101(7), 2525-2528. https://doi.org/10.1016/j.biortech.2009.11.040
35. Oladele, I. O., Akinwekomi, A. D., Akinseye, J. G., Falana, S. O., & Oke, S. R. (2024). Evolution of bamboo derivative fiber-mollusk shell based calcite particulate hybrid reinforced epoxy bio-composites for sustainable applications. Journal of Composite Materials, 58(24), 2597-2622. https://doi.org/10.1177/00219983241270966
36. Oladele, I. O., Falana, S. O., Ilesanmi, Akinbamiyorin, M., Onuh, L. N., Taiwo, A. S., Adelani, S. O., & Olajesu, O. F. (2025). Cyclic thermal treatment parameters of bagasse particle reinforced epoxy bio-composites for sustainable applications. Discover Polymers, 2, Article 5. https://doi.org/10.1007/s44347-025-00016-6
37. Panicker, A. M., Maria, R., Rajesh, K. A., & Varghese, T. O. (2020). Bit coir fiber and sugarcane bagasse fiber reinforced eco-friendly polypropylene composites: Development and property evaluation thereof. Journal of Thermoplastic Composite Materials, 33(9), 1175-1195. https://doi.org/10.1177/0892705718820403
38. Prabhakaran, S., Krishnaraj, V., Golla, H., & Senthilkumar, M. (2022). Biodegradation behaviour of green composite sandwich made of flax and agglomerated cork. Polymers and Polymer Composites, 30, 1-8. https://doi.org/10.1177/09673911221103602
39. Ramleea, N. A., Jawaid, M., Zainudinb, E. S., & Yamani, S. A. K. (2019). Tensile, physical and morphological properties of oil palm empty fruit bunch/sugarcane bagasse fibre reinforced phenolic hybrid composites. Journal of Materials Research and Technology, 8(4), 3466-3474. https://doi.org/10.1016/j.jmrt.2019.06.016
40. Satheeskumar, S. (2018). Evaluation of tensile, flexural, hardness and impact characteristics of polymer composites. International Journal of Mechanical Engineering and Technology, 9(8), 575-581.
41. Satyanarayana, K. G., Arizaga, G. G. C., & Wypych, F. (2009). Biodegradable composites based on lignocellulosic fibers—An overview. Progress in Polymer Science, 34(9), 982-1021. https://doi.org/10.1016/j.progpolymsci.2008.12.002
42. Seisa, K., Chinnasamy, V., & Ude, A. U. (2022). Surface treatments of natural fibres in fibre-reinforced composites: A review. Fibres and Textiles in Eastern Europe, 30(2), 82-89. https://doi.org/10.2478/ftee-2022-0011
43. Seshappa, A., Kumar, G. K. K., & Sankar, C. B. (2018). Analysis of mechanical characteristics of silicon carbide reinforced with aluminum metal matrix composites. International Journal of Scientific Development and Research, 3(11), 125-131.
44. Shinde, S., Mane, K., & Jakukore, V. (2021). Review of sugarcane bagasse and luffa fiber composites. In Proceedings of National Conference on Relevance of Engineering and Science for Environment and Society (pp. 75–84).https://doi.org/10.21467/proceedings.118.11
45. Raja, T., Devarajan, Y., Prakash, J. U., Upadhye, V. J., Singh, L., & Kannan, S. (2024). Sustainable innovations: Mechanical and thermal stability in palm fiber-reinforced boron carbide epoxy composites. Results in Engineering, 24, Article 103214. https://doi.org/10.1016/j.rineng.2024.103214
46. Yeshanew, D. A., & Wolela, A. D. (2019). Development and characterization of chipboard from sugarcane bagasse and jute fiber. Advance Research in Textile Engineering, 4(2), Article 1041.
47. Yetiş, F., Liu, X., Sampson, W. W., & Gong, R. H. (2023). Biodegradation of composites of polylactic acid and microfibrillated lignocellulose. Journal of Polymers and the Environment, 31, 698-708. https://doi.org/10.1007/s10924-022-02583-2
48. Zhang, M., Biesold, G. M., Choi, W., Yu, J., Deng, Y., Silvestre, C., & Lin, Z. (2022). Recent advances in polymers and polymer composites for food packaging. Materials Today, 53, 134-161. https://doi.org/10.1016/j.mattod.2022.01.022