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Open research questions in Natural Fiber Reinforced Composites

164 unresolved questions extracted from the limitations and future-work sections of 836 Natural Fiber Reinforced Composites papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The technical challenge posed by the higher density of some wood species, such as Tatajuba. The need to optimize the compaction ratio to achieve favorable mechanical performance. The challenge of ensuring adequate bonding and moisture resistance in OSB production.

    Development of OSB Panels with Wood Residues from the Northern Region of Brazil · 2026 · DOI

  • The study only evaluated five Brazilian tropical species, - The sample size was limited to seven formulations, - The study did not investigate the long-term durability of the panels

    Development of OSB Panels with Wood Residues from the Northern Region of Brazil · 2026 · DOI

  • Further research is needed to address the limitations of using recycled wood bers in MDF production, such as the presence of contaminants and low aspect ratio. Investigating innovative processes and technologies to convert lignocellulosic agricultural waste into biofuels, biochemicals, and biocomposites. Developing advanced separation techniques for contaminant removal and optimized crushing methods to increase the particles' aspect ratio.

    Life cycle assessment of MDF production: implementing bio-based production strategies · 2026 · DOI

  • The lack of a comprehensive analysis of the environmental impacts of MDF production. The need for a systematic approach to identifying and evaluating the input and output flows within the production process.

    Life cycle assessment of MDF production: implementing bio-based production strategies · 2026 · DOI

  • The analysis reveals that many reported performance discrepancies arise from poorly defined structure–property relationships and the absence of standardized characterization, grading, and durability testing protocols for recycled fibers.

    Recycled Cellulosic Natural Fibers and Their Reinforced Polymer Composites: Processing Methods, Applications, Challenges and Future Directions · 2026 · DOI

  • Further research is needed to develop direct pull-out testing methods, explore the thermal/fire behaviour of composite phases encompassing the polymeric coating, and create a sustainability framework that considers ecological impacts, recyclability, and waste management for natural fibre reinforced cementitious composites.

    Intensive exploration: The application potential of flax fibre/textiles as reinforcement in cementitious composites · 2025 · DOI

  • In previous research investigations, the comparative mechanical characteristic analysis of hybrid composites filled with two or more fillers has not been studied, which motivated us to take up the research on incorporation of the above listed industrial wastes as fillers.

    Experimental Investigation on Mechanical Characterization of Epoxy-E-Glass Fiber-Particulate Reinforced Hybrid Composites · 2024 · DOI

  • The study identifies a research gap in the development of sustainable composites based on natural renewable resources. The research aims to address the environmental impacts of composite production and develop new materials with improved mechanical and tribological properties.

    Mechanical, tribological, and physical performance of sisal fiber reinforced epoxy composites filled with Aningeria, Cordia Africana, and Cedar Sawdust · 2026 · DOI

  • Further evaluation of post immersion mechanical characterization is important for durability assessment. The study of the effect of different surface treatments on the mechanical properties of CLS and MCL composites. Investigation of the use of coconut leaf sheath and midrib of coconut leaf as reinforcement in other types of composites.

    Investigation on the mechanical behavior of coconut leaf sheath and midrib of coconut leaf reinforced epoxy composites · 2026 · DOI

  • Limited work has been done on coconut fiber–based composites. There is a need to evaluate the mechanical characteristics of composites incorporated with CLS and MCL. The effect of MCL content on the mechanical properties of CLS-based composites is not well understood.

    Investigation on the mechanical behavior of coconut leaf sheath and midrib of coconut leaf reinforced epoxy composites · 2026 · DOI

  • There is a need for sustainable materials from renewable resources. The use of agricultural waste as a precursor for biochar synthesis is a relatively unexplored area.

    Agriculture waste derived biochar based polyvinyl alcohol composites for structural applications · 2026 · DOI

  • While the paper reports decreased elongation at break and ductility with increased WBFB content, it does not investigate mitigation strategies or surface modification techniques to maintain composite ductility.

    Agriculture waste derived biochar based polyvinyl alcohol composites for structural applications · 2026 · DOI

  • The need for sustainable, light, environmentally friendly materials has led to a gap in the development of natural fiber reinforced polymer composites. The lack of understanding of the influence of pineapple leaf fiber reinforcement on the mechanical, tribological, and morphological behavior of epoxy composites.

    Experimental evaluation of mechanical, tribological, and morphological characteristics of alkali-treated pineapple leaf fiber reinforced epoxy composites for structural and biomedical applications · 2026 · DOI

  • The study suggests using synthetic data generated by the constitutive model to train surrogate machine-learning models. The study provides a perspective for accelerating long-term simulations and parametric studies in forming applications.

    A Compact Micromechanical Model for the Elastic-Viscoplastic Deformability of PLA-Hemp Biocomposites · 2026 · DOI

  • The study identifies a gap in the predictive modeling of elastic-viscoplastic deformation of biopolymers. The study highlights the limitations of traditional experimental characterization methods.

    A Compact Micromechanical Model for the Elastic-Viscoplastic Deformability of PLA-Hemp Biocomposites · 2026 · DOI

  • Future research can focus on optimizing the properties of composite glass fibre specimens using the Taguchi approach. Future research can investigate the use of other techniques, such as machine learning, to analyze the data. Future research can explore the application of the study's findings to other materials and engineering applications.

    Development and testing of composite glass fibre specimen’s mechanical properties in three different orientation & different percentage of nylon infill using taguchi approach · 2026 · DOI

  • The study identifies a gap in the understanding of the mechanical properties of composite glass fibre specimens. The study identifies a need for a systematic approach to testing and analyzing the effects of variables on the mechanical properties of the specimens.

    Development and testing of composite glass fibre specimen’s mechanical properties in three different orientation & different percentage of nylon infill using taguchi approach · 2026 · DOI

  • The lack of understanding of the mechanical properties of natural fiber hybrid composites. The need for sustainable and eco-friendly alternatives to synthetic materials.

    Experimental Investigation on Mechanical Properties of Hemp and Sisal Hybrid Composite Material · 2026 · DOI

  • The vulnerability of non-engineered structures to seismic events. The carbon-intensive process of producing conventional construction materials. The lack of research on natural fibers like banana, jute, and bamboo.

    Enhancing the Mechanical Properties of Concrete Using Natural Fiber Reinforcement: A Comparative Study of Bamboo, Banana, and Jute Fibers · 2026 · DOI

  • There is a critical research gap in the comparative performance and statistical consistency of diverse natural fibers. Previous studies have explored synthetic fibers, but there is a lack of research on natural fibers like banana, jute, and bamboo.

    Enhancing the Mechanical Properties of Concrete Using Natural Fiber Reinforcement: A Comparative Study of Bamboo, Banana, and Jute Fibers · 2026 · DOI

  • The lack of understanding of the effect of silica filler on mechanical performance and moisture durability of unidirectional jute fabric epoxy composites. The need to identify the optimal SiO2 filler content for enhanced mechanical performance.

    Effect of silica filler on mechanical performance and moisture durability of unidirectional jute fabric epoxy composites · 2026 · DOI

  • Ongoing research aims to address the challenges of fire resistance, long-term durability, and cost. Expanding the use of FRPs in infrastructure projects.

    Advanced Fibre-Reinforced Polymer Composites: Properties, Processing Techniques, and Engineering Applications · 2026 · DOI

  • Traditional materials such as steel or aluminum have limitations, including corrosion and high weight. The need for materials with tailored properties that meet specific application requirements.

    Advanced Fibre-Reinforced Polymer Composites: Properties, Processing Techniques, and Engineering Applications · 2026 · DOI

  • The lack of prior studies on hybrid PBS composites incorporating both TSW and BC fillers.

    Sustainable Biocomposites from Oyster Shell and Bamboo Charcoal Reinforced Polybutylene Succinate (PBS) for Agricultural Applications · 2026 · DOI

  • The development of sustainable and biodegradable composites with improved mechanical properties is a significant research gap. The use of natural fibers in composite development is an area that needs further research.

    Enhanced polylactic acid composites reinforced with pineapple leaf and hemp fibers · 2026 · DOI

Most-cited papers in Natural Fiber Reinforced Composites

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164 open questions have been extracted from the limitations and future-work passages of 836 Natural Fiber Reinforced Composites papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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