{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T13:23:00Z","timestamp":1787923380315,"version":"build-2784847793"},"reference-count":46,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T00:00:00Z","timestamp":1787788800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>In this study, composites reinforced with jute fiber, false banana fiber, and hybrid jute\/false banana fibers were fabricated using unsaturated polyester resin (UPR) as the matrix material via the vacuum infusion method. To examine the effects of fiber type and hybridization on density, water absorption, tensile behavior, and microstructural features, all composite samples were prepared with a fixed total fiber content of 30 wt.% and a UPR matrix content of 70 wt.%. Among the fabricated composites, the false banana fiber-reinforced polymer composite (FBFRPC) exhibited the lowest density, with a value of 1.16 g\/cm3, whereas the jute fiber-reinforced polymer composite (JFRPC) showed the highest density of 1.22 g\/cm3. Water absorption increased gradually with immersion time in all composite groups. After 72 h of immersion, the lowest water absorption was recorded for the JFRPC, at 5.30%, while the highest value was obtained for the FBFRPC at 6.20%. Scanning electron microscopy (SEM) analysis revealed that fiber type caused noticeable differences in fiber dispersion, resin impregnation, fiber pull-out behavior, and fiber\u2013matrix interfacial bonding. The JFRPC demonstrated the highest tensile performance, reaching a maximum tensile stress of 51.20 MPa and a Young\u2019s modulus of 885.60 MPa. In contrast, the FBFRPC showed the lowest tensile strength but achieved the highest strain value of 7.40%, indicating greater deformation capability before fracture. Compared with the individual jute and false banana fiber composites, the hybrid jute\/false banana fiber-reinforced polymer composite (JFBFRPC) provided a balanced combination of density, water absorption, microstructural characteristics, and tensile properties. Overall, the findings indicate that hybridization is an effective approach for developing lightweight unsaturated polyester composites reinforced with renewable lignocellulosic fibers for potential non-load-bearing and semi-structural applications.<\/jats:p>","DOI":"10.3390\/polym18172080","type":"journal-article","created":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T10:58:21Z","timestamp":1787828301000},"page":"2080","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Physical, Tensile, and Microstructural Properties of Jute\/False Banana Fiber-Reinforced Unsaturated Polyester Resin Composites"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4605-607X","authenticated-orcid":false,"given":"Mert","family":"Yildirim","sequence":"first","affiliation":[{"name":"Department of Industrial Engineering, Istanbul Gelisim University, Istanbul 34310, T\u00fcrkiye"},{"name":"New Generation Entrepreneurship and Innovation Application and Research Center, Istanbul Gelisim University, Istanbul 34310, T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"4","DOI":"10.1007\/s44245-023-00011-w","article-title":"A Review on the Machining of Polymer Composites Reinforced with Carbon (CFRP), Glass (GFRP), and Natural Fibers (NFRP)","volume":"2","author":"Slamani","year":"2023","journal-title":"Discov. Mech. Eng."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"682","DOI":"10.1016\/j.matpr.2021.10.379","article-title":"A Mini Review on Fibre Reinforced Polymer Composites","volume":"54","author":"Waghmare","year":"2022","journal-title":"Mater. Today Proc."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"102199","DOI":"10.1016\/j.rechem.2025.102199","article-title":"Recent Advances of Fiber-Reinforced Polymer Composites for Defense Innovations","volume":"15","author":"Alzahrani","year":"2025","journal-title":"Results Chem."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"655","DOI":"10.1016\/j.compositesb.2009.04.014","article-title":"Natural Fibre-Reinforced Composites for Bioengineering and Environmental Engineering Applications","volume":"40","author":"Cheung","year":"2009","journal-title":"Compos. Part B Eng."},{"key":"ref_5","first-page":"26349833221147540","article-title":"A Review of Recent Developments in Structural Applications of Natural Fiber-Reinforced Composites (NFRCs)","volume":"32","author":"Abdollahiparsa","year":"2023","journal-title":"Compos. Adv. Mater."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"102666","DOI":"10.1016\/j.apmt.2025.102666","article-title":"A Comprehensive Review of Natural Fiber Reinforced Polymer Composites as Emerging Materials for Sustainable Applications","volume":"43","author":"Ajayi","year":"2025","journal-title":"Appl. Mater. Today"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Thimmegowda, D.Y., Hindi, J., Markunti, G.B., and Kakunje, M. (2025). Enhancement of Mechanical Properties of Natural Fiber Reinforced Polymer Composites Using Different Approaches\u2014A Review. J. Compos. Sci., 9.","DOI":"10.3390\/jcs9050220"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"10495","DOI":"10.1039\/D5RA09029F","article-title":"Natural fibers in sustainable materials: Extraction technologies, fiber modification, and performance\u2013sustainability relationships","volume":"16","author":"Sayam","year":"2026","journal-title":"RSC Adv."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"114525","DOI":"10.1016\/j.compstruct.2021.114525","article-title":"Effect of stacking sequence on the performance of hybrid natural\/synthetic fiber reinforced polymer composite laminates","volume":"276","author":"Das","year":"2021","journal-title":"Compos. Struct."},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Dharani Kumar, S., Arora, G., Rangappa, S.M., and Siengchin, S. (2026). A critical review of mechanical performance, non-destructive damage monitoring, and AI-driven prediction for sustainable hybrid polymer composites. Def. Technol., in press.","DOI":"10.1016\/j.dt.2026.04.014"},{"key":"ref_11","first-page":"101220","article-title":"Recent Advances in Sustainable Natural Fiber Composites: Environmental Benefits, Applications, and Future Prospects","volume":"32","author":"Ahmed","year":"2025","journal-title":"Mater. Today Sustain."},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"P\u0119\u015bko, M., and Masek, A. (2025). Plant-Based Biofillers for Polymer Composites: Characterization, Surface Modification, and Application Potential. Polymers, 17.","DOI":"10.3390\/polym17172286"},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Candan, Z., Tozluoglu, A., Gonultas, O., Yildirim, M., Fidan, H., Alma, M.H., and Salan, T. (2022). Nanocellulose: Sustainable biomaterial for developing novel adhesives and composites. Industrial Applications of Nanocellulose and Its Nanocomposites, Woodhead Publishing.","DOI":"10.1016\/B978-0-323-89909-3.00015-8"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"100311","DOI":"10.1016\/j.scenv.2025.100311","article-title":"A brief review of the structure and extraction methods of lignin","volume":"13","author":"Yildirim","year":"2026","journal-title":"Sustain. Chem. Environ."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1016\/j.matdes.2012.07.014","article-title":"In state of art: Mechanical and tribological behaviour of polymeric composites based on natural fibres","volume":"48","author":"Shalwan","year":"2013","journal-title":"Mater. Des."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"182","DOI":"10.1680\/jgrma.20.00044","article-title":"Development and Characterization of Hybrid Composites from Sustainable Green Materials","volume":"9","author":"Yildirim","year":"2021","journal-title":"Green Mater."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"457","DOI":"10.32604\/jrm.2024.045814","article-title":"Overview of Jute Fibre as Thermoplastic Matrix Polymer Reinforcement","volume":"12","author":"Cionita","year":"2024","journal-title":"J. Renew. Mater."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"2079","DOI":"10.1016\/j.matpr.2020.02.449","article-title":"A Review of Jute Fiber Reinforced Polymer Composites","volume":"26","author":"Chandekar","year":"2020","journal-title":"Mater. Today Proc."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"143","DOI":"10.18034\/abr.v10i3.480","article-title":"Jute and Jute Products of Bangladesh: Contributions and Challenges","volume":"10","author":"Akter","year":"2020","journal-title":"Asian Bus. Rev."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"e6268","DOI":"10.1002\/pat.6268","article-title":"Mechanical Properties, Surface Treatments, and Applications of Jute Fiber Reinforced Composites\u2014A Review","volume":"35","author":"Shakir","year":"2024","journal-title":"Polym. Adv. Technol."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1552","DOI":"10.1016\/j.jmrt.2025.06.118","article-title":"Mechanical Characterization of Jute Fiber-Reinforced Composites Manufactured via Digital Light Processing (DLP)","volume":"37","author":"Pereira","year":"2025","journal-title":"J. Mater. Res. Technol."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Iqbal, R.M., Ahammad, R., Arifuzzaman, M., Islam, M.S., and Islam, M.M. (2025). Manufacturing and Properties of Jute Fiber-Reinforced Polymer Composites\u2014A Comprehensive Review. Materials, 18.","DOI":"10.3390\/ma18051016"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"2311303","DOI":"10.1080\/15440478.2024.2311303","article-title":"False Banana (Enset ventricosum) Fibers: An Emerging Natural Fiber with Distinct Properties, Promising Potentials, Challenges and Future Prospects\u2014A Critical Review","volume":"21","author":"Dejene","year":"2024","journal-title":"J. Nat. Fibers"},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Teriya, T.T., Lemu, H.G., and Gutema, E.M. (2026). Review on the Current Status of Enset Fiber-Reinforced Polymer Composite: Mechanical Properties, Fabrication, and Applications. Fibers, 14.","DOI":"10.3390\/fib14040039"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"589","DOI":"10.1016\/j.compstruct.2018.09.043","article-title":"Mechanical, Morphological, Structural and Dynamic Mechanical Properties of Alkali Treated Ensete Stem Fibers Reinforced Unsaturated Polyester Composites","volume":"207","author":"Negawo","year":"2019","journal-title":"Compos. Struct."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"113221","DOI":"10.1016\/j.compstruct.2020.113221","article-title":"Mechanical and Dynamic Mechanical Thermal Properties of Ensete Fiber\/Woven Glass Fiber Fabric Hybrid Composites","volume":"259","author":"Negawo","year":"2021","journal-title":"Compos. Struct."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"120189","DOI":"10.1016\/j.indcrop.2024.120189","article-title":"Extraction of Ensete Fibers and Its Woven Fabric Green Composite Development for Ceiling Board Applications","volume":"223","author":"Ramaiah","year":"2025","journal-title":"Ind. Crops Prod."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"13483","DOI":"10.1038\/s41598-026-42862-9","article-title":"Development and Performance Evaluation of Sustainable False Banana Fiber Reinforced Composite Fan Blades","volume":"16","author":"Gebremaryam","year":"2026","journal-title":"Sci. Rep."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"109934","DOI":"10.1016\/j.compositesa.2026.109934","article-title":"Hybrid fiber reinforced polymer composites: Recent advances in manufacturing methods, hybridization strategies and service performance","volume":"209","author":"Ding","year":"2026","journal-title":"Compos. Part A Appl. Sci. Manuf."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Pavlovic, A., Valzania, L., and Minak, G. (2025). Effects of Moisture Absorption on the Mechanical and Fatigue Properties of Natural Fiber Composites: A Review. Polymers, 17.","DOI":"10.3390\/polym17141996"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"1857","DOI":"10.1016\/S0266-3538(02)00098-2","article-title":"A Comparison of the Mechanical Properties of Phenol Formaldehyde Composites Reinforced with Banana Fibres and Glass Fibres","volume":"62","author":"Joseph","year":"2002","journal-title":"Compos. Sci. Technol."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1632","DOI":"10.1016\/j.compositesa.2008.07.007","article-title":"Characterization of Natural Fiber Surfaces and Natural Fiber Composites","volume":"39","author":"Sgriccia","year":"2008","journal-title":"Compos. Part A Appl. Sci. Manuf."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"98","DOI":"10.1016\/j.compositesa.2015.08.038","article-title":"A Review of Recent Developments in Natural Fibre Composites and Their Mechanical Performance","volume":"83","author":"Pickering","year":"2016","journal-title":"Compos. Part A Appl. Sci. Manuf."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"7721","DOI":"10.15376\/biores.11.3.7721-7736","article-title":"Fabrication of Epoxy Nanocomposites from Oil Palm Nano Filler: Mechanical and Morphological Properties","volume":"11","author":"Saba","year":"2016","journal-title":"BioResources"},{"key":"ref_35","unstructured":"(2020). Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement (Standard No. ASTM D792-20)."},{"key":"ref_36","unstructured":"(2006). Standard Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel Materials (Standard No. ASTM D1037-06)."},{"key":"ref_37","unstructured":"(2017). Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials (Standard No. ASTM D3039\/D3039M-17)."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"401","DOI":"10.1007\/s42452-025-06981-8","article-title":"Eco-Friendly Composites: Exploring the Potential of Natural Fiber Reinforcement","volume":"7","author":"Puttegowda","year":"2025","journal-title":"Discov. Appl. Sci."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"101271","DOI":"10.1016\/j.rineng.2023.101271","article-title":"A Comprehensive Review of Natural Fibers and Their Composites: An Eco-Friendly Alternative to Conventional Materials","volume":"19","author":"Elfaleh","year":"2023","journal-title":"Results Eng."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"108083","DOI":"10.1016\/j.polymertesting.2023.108083","article-title":"Challenges and Advancement in Water Absorption of Natural Fiber-Reinforced Polymer Composites","volume":"124","author":"Mohammed","year":"2023","journal-title":"Polym. Test."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"227","DOI":"10.1007\/s43939-025-00419-z","article-title":"A Comprehensive Review on Natural Fiber Reinforced Hybrid Composites Processing Techniques, Material Properties and Emerging Applications","volume":"5","author":"Kaufmann","year":"2025","journal-title":"Discov. Mater."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"4629","DOI":"10.1016\/j.matdes.2011.04.029","article-title":"Influence of alkali treatment and fibre length on mechanical properties of short Agave fibre reinforced epoxy composites","volume":"32","author":"Mylsamy","year":"2011","journal-title":"Mater. Des."},{"key":"ref_43","doi-asserted-by":"crossref","unstructured":"Mohammed, A.D.A.A., Ronghui, W., and Huseien, G.F. (2024). Mechanical Properties of Natural Jute Fiber-Reinforced Geopolymer Concrete: Effects of Various Lengths and Volume Fractions. J. Compos. Sci., 8.","DOI":"10.3390\/jcs8110450"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"112986","DOI":"10.1016\/j.compositesb.2025.112986","article-title":"Hybridization in natural fiber composites: Enhanced performance and sustainability","volume":"308","author":"Saha","year":"2026","journal-title":"Compos. Part B Eng."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"1231","DOI":"10.1007\/s13726-024-01319-4","article-title":"Hybridization of woven kenaf and unidirectional glass fibre roving for unsaturated polyester composite","volume":"33","author":"Balakrishnan","year":"2024","journal-title":"Iran. Polym. J."},{"key":"ref_46","doi-asserted-by":"crossref","unstructured":"Zhang, Y., Hu, Y., Chen, K., Jin, Z., Lei, Q., Li, Y., Cong, C., Zhou, Q., and Wang, Y. (2025). Continuous aramid fiber\/unsaturated polyester resin composites with excellent interfacial and mechanical properties. Front. Mater. Sci., 19.","DOI":"10.1007\/s11706-025-0728-x"}],"container-title":["Polymers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-4360\/18\/17\/2080\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T12:35:10Z","timestamp":1787920510000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-4360\/18\/17\/2080"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8,27]]},"references-count":46,"journal-issue":{"issue":"17","published-online":{"date-parts":[[2026,9]]}},"alternative-id":["polym18172080"],"URL":"https:\/\/doi.org\/10.3390\/polym18172080","relation":{},"ISSN":["2073-4360"],"issn-type":[{"value":"2073-4360","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,8,27]]}}}