Stiffness and Strength-Related Sustainability Assessment of Natural Fibers for Injection Molded Composites

The growing demand for sustainable materials has led to an increased interest in bio-based composites reinforced with natural fibers such as flax, hemp, kenaf, and sisal. This study presents a comparative sustainability assessment of these fibers, highlighting significant differences based on proces...

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Main Authors: Jan-Marten Sprenger, Katharina Albrecht, Nikolay Minkov, Matthias Finkbeiner, Lea Schönfeld, Katharina V. Meyer, Jörg Müssig
Format: Article
Language:English
Published: Taylor & Francis Group 2025-12-01
Series:Journal of Natural Fibers
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Online Access:https://www.tandfonline.com/doi/10.1080/15440478.2025.2531372
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author Jan-Marten Sprenger
Katharina Albrecht
Nikolay Minkov
Matthias Finkbeiner
Lea Schönfeld
Katharina V. Meyer
Jörg Müssig
author_facet Jan-Marten Sprenger
Katharina Albrecht
Nikolay Minkov
Matthias Finkbeiner
Lea Schönfeld
Katharina V. Meyer
Jörg Müssig
author_sort Jan-Marten Sprenger
collection DOAJ
description The growing demand for sustainable materials has led to an increased interest in bio-based composites reinforced with natural fibers such as flax, hemp, kenaf, and sisal. This study presents a comparative sustainability assessment of these fibers, highlighting significant differences based on processing methods and fiber characteristics. Life cycle assessment (LCA) results show that flax tow, a by-product of textile flax production, has the lowest environmental impact under economic allocation. In contrast, the impact of sisal fiber varies greatly depending on the processing method: wet separation in Tanzania significantly increases water consumption and methane emissions, while dry extraction methods in Brazil reduce these impacts. An integrated tool has been developed to incorporate material performance metrics into sustainability assessments to improve sustainable material selection, addressing the “LCA paradox.” This property-specific assessment framework enables multidisciplinary collaboration and supports the development of environmentally optimized natural fiber composites for injection molding and other applications.
format Article
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institution Kabale University
issn 1544-0478
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language English
publishDate 2025-12-01
publisher Taylor & Francis Group
record_format Article
series Journal of Natural Fibers
spelling doaj-art-ec078367ba384dcfa9ec8796305312f02025-08-20T03:51:19ZengTaylor & Francis GroupJournal of Natural Fibers1544-04781544-046X2025-12-0122110.1080/15440478.2025.2531372Stiffness and Strength-Related Sustainability Assessment of Natural Fibers for Injection Molded CompositesJan-Marten Sprenger0Katharina Albrecht1Nikolay Minkov2Matthias Finkbeiner3Lea Schönfeld4Katharina V. Meyer5Jörg Müssig6The Biological Materials Group, Biomimetics, HSB – Hochschule Bremen, City University of Applied Sciences Bremen, Bremen, GermanyThe Biological Materials Group, Biomimetics, HSB – Hochschule Bremen, City University of Applied Sciences Bremen, Bremen, GermanySustainable Engineering, Technische Universität Berlin, Institute for Environmental Engineering, Berlin, GermanySustainable Engineering, Technische Universität Berlin, Institute for Environmental Engineering, Berlin, GermanyThe Biological Materials Group, Biomimetics, HSB – Hochschule Bremen, City University of Applied Sciences Bremen, Bremen, GermanyThe Biological Materials Group, Biomimetics, HSB – Hochschule Bremen, City University of Applied Sciences Bremen, Bremen, GermanyThe Biological Materials Group, Biomimetics, HSB – Hochschule Bremen, City University of Applied Sciences Bremen, Bremen, GermanyThe growing demand for sustainable materials has led to an increased interest in bio-based composites reinforced with natural fibers such as flax, hemp, kenaf, and sisal. This study presents a comparative sustainability assessment of these fibers, highlighting significant differences based on processing methods and fiber characteristics. Life cycle assessment (LCA) results show that flax tow, a by-product of textile flax production, has the lowest environmental impact under economic allocation. In contrast, the impact of sisal fiber varies greatly depending on the processing method: wet separation in Tanzania significantly increases water consumption and methane emissions, while dry extraction methods in Brazil reduce these impacts. An integrated tool has been developed to incorporate material performance metrics into sustainability assessments to improve sustainable material selection, addressing the “LCA paradox.” This property-specific assessment framework enables multidisciplinary collaboration and supports the development of environmentally optimized natural fiber composites for injection molding and other applications.https://www.tandfonline.com/doi/10.1080/15440478.2025.2531372Natural fiber compositesLife Cycle AssessmentIntegrated approachSustainable developmentEco-designProperty-related LCA
spellingShingle Jan-Marten Sprenger
Katharina Albrecht
Nikolay Minkov
Matthias Finkbeiner
Lea Schönfeld
Katharina V. Meyer
Jörg Müssig
Stiffness and Strength-Related Sustainability Assessment of Natural Fibers for Injection Molded Composites
Journal of Natural Fibers
Natural fiber composites
Life Cycle Assessment
Integrated approach
Sustainable development
Eco-design
Property-related LCA
title Stiffness and Strength-Related Sustainability Assessment of Natural Fibers for Injection Molded Composites
title_full Stiffness and Strength-Related Sustainability Assessment of Natural Fibers for Injection Molded Composites
title_fullStr Stiffness and Strength-Related Sustainability Assessment of Natural Fibers for Injection Molded Composites
title_full_unstemmed Stiffness and Strength-Related Sustainability Assessment of Natural Fibers for Injection Molded Composites
title_short Stiffness and Strength-Related Sustainability Assessment of Natural Fibers for Injection Molded Composites
title_sort stiffness and strength related sustainability assessment of natural fibers for injection molded composites
topic Natural fiber composites
Life Cycle Assessment
Integrated approach
Sustainable development
Eco-design
Property-related LCA
url https://www.tandfonline.com/doi/10.1080/15440478.2025.2531372
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