{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T19:15:41Z","timestamp":1785352541415,"version":"3.55.0"},"reference-count":34,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2025,12,12]],"date-time":"2025-12-12T00:00:00Z","timestamp":1765497600000},"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>This article provides a multifaceted analysis of the feasibility, purposefulness, and legitimacy of the alternative use of industrial hemp (HF) fibres processed into fabrics and mats as multilayer reinforcement in polymer structural composites, potentially replacing glass fibres (GF) in various industries, including the production of recreational vessels (yachts and motorboats) and other floating products (buoys\/floats\/pontoons, etc.). Based on the results of physical, mechanical, and morphological tests of new polymer structural composites HFRP vs. GFRP and a comparative analysis of their properties, a structural correlation coefficient for HFRP was determined with respect to GFRP [WK = 1.66 (6), provided that the grammage of reinforcement of the skin\/shell of the selected floating object\/structure is comparable]. This article presents the possibility of meeting stringent environmental protection requirements for the future safe recycling and\/or disposal of products and their post-production waste manufactured from HFRP at the end of their service life. Fire tests of these new materials have shown that it is possible to use them completely (almost 100%) in the near future, mainly through energy recovery.<\/jats:p>","DOI":"10.3390\/polym17243295","type":"journal-article","created":{"date-parts":[[2025,12,12]],"date-time":"2025-12-12T11:13:33Z","timestamp":1765538013000},"page":"3295","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Structural Correlation Coefficient for Polymer Structural Composites\u2014Reinforcement with Hemp and Glass Fibre"],"prefix":"10.3390","volume":"17","author":[{"given":"Mieczyslaw","family":"Scheibe","sequence":"first","affiliation":[{"name":"Faculty of Marine Engineering, Maritime University of Szczecin, 70-500 Szczecin, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0701-6908","authenticated-orcid":false,"given":"Magdalena","family":"Urbaniak","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3579-7534","authenticated-orcid":false,"given":"Andrzej","family":"Bledzki","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering and Mechatronics, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,12,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"788","DOI":"10.14314\/polimery.2019.11.7","article-title":"Problems connected with utilization of polymer composite products and waste materials Part II. \u201cScrapping\u201d of composite recreational vessels in the world in the perspective of 2030","volume":"64","author":"Scheibe","year":"2019","journal-title":"Polimery"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2150","DOI":"10.1002\/app.20712","article-title":"Unidirectional Hemp and flax EP- and PP-compisites: Influence of defined fiber treatments","volume":"93","author":"Bledzki","year":"2004","journal-title":"J. Appl. Polym. Sci."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"895","DOI":"10.1016\/j.compscitech.2005.07.040","article-title":"Resin transfer molding of hemp fiber composites: Optimization of the process and mechanical properties of the materials","volume":"66","author":"Rouison","year":"2006","journal-title":"Compos. Sci. Technol."},{"key":"ref_4","unstructured":"Thygesen, A. (2006). Properties of Hemp Fibre Polymer Composites\u2014An Optimisation of Fibre Properties Using Novel Defibration Methods and Fibre Characterisation. [Ph.D. Thesis, The Royal Agricultural and Veterinary University of Denmark]."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1552","DOI":"10.1016\/j.progpolymsci.2012.04.003","article-title":"Biocomposites reinforced with natural fibers: 2000\u20132010","volume":"37","author":"Faruk","year":"2012","journal-title":"Prog. Polym. Sci."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"3300","DOI":"10.1016\/j.compscitech.2007.03.039","article-title":"Impact and fatigue behaviour of hemp fibre composites","volume":"67","author":"Yuanjian","year":"2007","journal-title":"Compos. Sci. Technol."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"973","DOI":"10.1177\/0021998311413623","article-title":"Hemp fiber and its composites: A review","volume":"46","author":"Shahzad","year":"2012","journal-title":"J. Compos. Mater."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"519","DOI":"10.1016\/j.compositesa.2011.11.021","article-title":"Flexural properties of hemp fibre reinforced polylactide and unsaturated polyester composites","volume":"43","author":"Moyeenuddin","year":"2012","journal-title":"Compos. Part A Appl. Sci. Manuf."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1513","DOI":"10.1177\/0021998312449028","article-title":"Analysis of mechanical properties of hemp fibre reinforced unsaturated polyester composites","volume":"47","author":"Sawpan","year":"2012","journal-title":"J. Compos. Mater."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"9647","DOI":"10.1007\/s00289-025-05902-4","article-title":"A review study on the mechanical behaviour of natural fibre-reinforced epoxy composite","volume":"82","author":"Dinkar","year":"2025","journal-title":"Polym. Bull."},{"key":"ref_11","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_12","doi-asserted-by":"crossref","first-page":"1209","DOI":"10.1016\/j.compscitech.2012.04.005","article-title":"Micromechanics of hemp strands in polypropylene composites","volume":"72","author":"Vallejos","year":"2012","journal-title":"Compos. Sci. Technol."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"325085","DOI":"10.1155\/2013\/325085","article-title":"A study in physical and mechanical properties of hemp fibres","volume":"2013","author":"Shahzad","year":"2013","journal-title":"Adv. Mater. Sci. Eng."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"317","DOI":"10.1016\/j.indcrop.2013.09.026","article-title":"Analysis of the hemp fiber mechanical properties and their scattering (Fedora 17)","volume":"51","author":"Marrot","year":"2013","journal-title":"Ind. Crop. Prod."},{"key":"ref_15","unstructured":"Spychalski, G., Ma\u0144kowski, J., Kubacki, A., Ko\u0142odziej, J., Pniewska, I., Baraniecki, P., and Grabowska, L. (2013). Industrial Hemp Cultivation and Processing Technology, Institute of Natural Fibres & Medicinal Plants IWNiRZ."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"428","DOI":"10.1016\/j.compositesa.2018.03.013","article-title":"Investigating the impact behaviour of short hemp fibres reinforced polypropylene biocomposites through high speed imaging and finite element modelling","volume":"109","author":"Puech","year":"2018","journal-title":"Compos. Part A Appl. Sci. Manuf."},{"key":"ref_17","first-page":"1517","article-title":"Effect of hemp fibre length on the properties of polypropylene composites","volume":"17","author":"Alao","year":"2019","journal-title":"Agron. Res."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"221","DOI":"10.1016\/j.jmrt.2021.02.064","article-title":"Mechanical, thermal and ballistic performance of epoxy composites reinforced with Cannabis sativa hemp fabric","volume":"12","author":"Ribeiro","year":"2021","journal-title":"J. Mater. Res. Technol."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Alao, P.F., Marrot, L., Kallakas, H., Just, A., Poltim\u00e4e, T., and Kers, J. (2021). Effect of hemp fiber surface treatment on the moisture\/water resistance and reaction to fire of reinforced PLA composites. Materials, 14.","DOI":"10.3390\/ma14154332"},{"key":"ref_20","unstructured":"(2025, October 15). Advancing and Representing a Sustainable Boating and Nautical Tourism Industry. Available online: https:\/\/www.europeanboatingindustry.eu."},{"key":"ref_21","unstructured":"(2025, October 17). NASBLA. Available online: https:\/\/www.nasbla.org."},{"key":"ref_22","unstructured":"(2025, October 21). Market Research Report \u201cRecreational Boat Market by Boat Type (Motorboats, Sailboats, Yachts, Inflatable Boats), by Power Source, by Activity\/Application, by Material, by Power Range, by Ownership, by Sales Channel-Global Industry Outlook, Key Companies (Brunswick Corporation, Groupe Beneteau, Yamaha Motor Co. Ltd., and others), Trends and Forecast 2025\u20132034\u201d, Report RC-1774, Published on August 2025. Available online: https:\/\/www.dimensionmarketresearch.com\/report\/recreational-boat-market\/."},{"key":"ref_23","unstructured":"Scheibe, M. (2022). Analysis of the Applicability of Natural Fiber Reinforced Polymer Composites for the Construction of Selected Types of Vessels. [Ph.D. Thesis, Maritime University of Szczecin]. (In Polish)."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"2251682","DOI":"10.1080\/15440478.2023.2251682","article-title":"Application of Natural (Plant) Fibers Particularly Hemp Fiber as Reinforcement in Hybrid Polymer Composites\u2014Part I. Origin of Hemp and Its Coming into Prominence, Cultivation Statistics, and Legal Regulations","volume":"20","author":"Scheibe","year":"2023","journal-title":"J. Nat. Fibers"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"268","DOI":"10.12913\/22998624\/161449","article-title":"Comparative Evaluation of the Selected Mechanical Properties of Polymer Composites Reinforced with Glass and Hemp Fabrics","volume":"17","author":"Scheibe","year":"2023","journal-title":"Adv. Sci. Technol. Res. J."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"2276715","DOI":"10.1080\/15440478.2023.2276715","article-title":"Application of Natural (Plant) Fibers Particularly Hemp Fiber as Reinforcement in Hybrid Polymer Composites\u2014Part II. Volume of Hemp Cultivation, Its Application and Sales Marked","volume":"20","author":"Scheibe","year":"2023","journal-title":"J. Nat. Fibers"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"2414194","DOI":"10.1080\/15440478.2024.2414194","article-title":"Application of Natural (Plant) Fibers Particularly Hemp Fiber as Reinforcement in Hybrid Polymer Composites\u2014Part III. Investigations of Physical and Mechanical Properties of Composites Reinforced with Hemp Fibers","volume":"21","author":"Scheibe","year":"2024","journal-title":"J. Nat. Fibers"},{"key":"ref_28","unstructured":"Polish Register of Shipping (1998). Rules for the Classification and Construction of Sea-Going Yachts. Part II\u2014Hull, Polish Register of Shipping. (In Polish)."},{"key":"ref_29","unstructured":"(2012). Plastics\u2014Determination of Tensile Properties. Part 2: Test Conditions for Moulding and Extrusion Plastics (Standard No. EN ISO 527-2: 2012)."},{"key":"ref_30","unstructured":"(2019). Plastics\u2014Determination of Flexural Properties (Standard No. EN ISO 178: 2019)."},{"key":"ref_31","unstructured":"(2020). Plastics\u2014Determination of Charpy Impact Properties. Part 2: Instrumented Impact Test (Standard No. EN ISO 179-2: 2020)."},{"key":"ref_32","unstructured":"(2018). Plastics\u2014Methods for Marine Exposure (Standard No. ISO 15314:2018)."},{"key":"ref_33","doi-asserted-by":"crossref","unstructured":"Scheibe, M., Dobrzynska, R., Urbaniak, M., and Bledzki, A. (2025). Polymer Structural Composites Reinforced with Hemp Fibres\u2014Impact Tests of Composites After Long-Term Storage in Representative Aqueous Environments and Fire Tests in the Context of Their Disposal by Energy Recycling Methods. Polymers, 17.","DOI":"10.3390\/polym17030276"},{"key":"ref_34","unstructured":"(2015). Reaction-to-Fire Tests\u2014Heat Release, Smoke Production and Mass Loss Rate. Part 1: Heat Release Rate (Cone Calorimeter Method) and Smoke Production Rate (Dynamic Measurement) (Standard No. ISO 5660-1:2015)."}],"container-title":["Polymers"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-4360\/17\/24\/3295\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,12]],"date-time":"2025-12-12T11:22:09Z","timestamp":1765538529000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-4360\/17\/24\/3295"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,12,12]]},"references-count":34,"journal-issue":{"issue":"24","published-online":{"date-parts":[[2025,12]]}},"alternative-id":["polym17243295"],"URL":"https:\/\/doi.org\/10.3390\/polym17243295","relation":{},"ISSN":["2073-4360"],"issn-type":[{"value":"2073-4360","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,12,12]]}}}