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AGRO–WASTE FIBRE COMPOSITES MANUFACTURING: COMPARATIVE KEY METHODS AND CHALLENGES IN THEIR PROCESSING.

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Title: AGRO–WASTE FIBRE COMPOSITES MANUFACTURING: COMPARATIVE KEY METHODS AND CHALLENGES IN THEIR PROCESSING.
Authors: KISS, Imre1, VLĂDUȚ, Valentin2
Source: Annals of the Faculty of Engineering Hunedoara - International Journal of Engineering. Feb2026, Vol. 24 Issue 1, p53-62. 10p.
Subjects: Fibrous composites, Production methods, Circular economy, Cellulose fibers, Polymeric composites, Surface preparation, Mechanical behavior of materials
Abstract: Lignocellulosic fibres derived from agricultural residues (e.g., wheat straw, rice husks, bagasse, corn cobs) are rapidly emerging as viable, low— cost, sustainable reinforcements in polymer composites, offering an environmentally responsible alternative to synthetic glass or carbon fibres. This report synthesizes current knowledge on their composition, properties, processing methods, performance metrics, and industrial adoption. Key findings indicate that treated lignocellulosic fibres can achievetensile strengths of 20–40 MPa in polymer matrices, with density reductions of 30–50% compared to glass—fibre composites. However, challenges persist in interfacial adhesion, moisture sensitivity, and feedstock variability. With optimized surface treatments (alkali, silane, coupling agents) and advanced processing (compression moulding, extrusion, injection), these bio—composites are gaining traction in automotive, construction, and packaging sectors. Romania shows limited commercial—scale manufacturing of agro—waste composites, with activity centred on research and pilot projects rather than widespread industry. Romanian research on agro—waste composites is primarily academic, led by universities and institutes focusing on lignocellulosic wastes like wheat straw and sunflower husks for sustainable materials. These efforts emphasize prototypes for construction panels and bioplastics, aligning with national circular economy goals, developing prototypes using local lignocellulosic wastes (e.g., wheat straw, sunflower husks) with recycled polypropylene, achieving viable mechanical properties via treatments. The paper concludes with strategic recommendations for scaling production, standardizing feedstocks, and integrating circular economy principles to accelerate market penetration, using right processing method for agro—waste composites. [ABSTRACT FROM AUTHOR]
Copyright of Annals of the Faculty of Engineering Hunedoara - International Journal of Engineering is the property of University Politehnica Timisoara, Faculty of Engineering Hunedoara and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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  Data: AGRO–WASTE FIBRE COMPOSITES MANUFACTURING: COMPARATIVE KEY METHODS AND CHALLENGES IN THEIR PROCESSING.
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  Data: <searchLink fieldCode="DE" term="%22Fibrous+composites%22">Fibrous composites</searchLink><br /><searchLink fieldCode="DE" term="%22Production+methods%22">Production methods</searchLink><br /><searchLink fieldCode="DE" term="%22Circular+economy%22">Circular economy</searchLink><br /><searchLink fieldCode="DE" term="%22Cellulose+fibers%22">Cellulose fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Polymeric+composites%22">Polymeric composites</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+preparation%22">Surface preparation</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink>
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  Label: Abstract
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  Data: Lignocellulosic fibres derived from agricultural residues (e.g., wheat straw, rice husks, bagasse, corn cobs) are rapidly emerging as viable, low— cost, sustainable reinforcements in polymer composites, offering an environmentally responsible alternative to synthetic glass or carbon fibres. This report synthesizes current knowledge on their composition, properties, processing methods, performance metrics, and industrial adoption. Key findings indicate that treated lignocellulosic fibres can achievetensile strengths of 20–40 MPa in polymer matrices, with density reductions of 30–50% compared to glass—fibre composites. However, challenges persist in interfacial adhesion, moisture sensitivity, and feedstock variability. With optimized surface treatments (alkali, silane, coupling agents) and advanced processing (compression moulding, extrusion, injection), these bio—composites are gaining traction in automotive, construction, and packaging sectors. Romania shows limited commercial—scale manufacturing of agro—waste composites, with activity centred on research and pilot projects rather than widespread industry. Romanian research on agro—waste composites is primarily academic, led by universities and institutes focusing on lignocellulosic wastes like wheat straw and sunflower husks for sustainable materials. These efforts emphasize prototypes for construction panels and bioplastics, aligning with national circular economy goals, developing prototypes using local lignocellulosic wastes (e.g., wheat straw, sunflower husks) with recycled polypropylene, achieving viable mechanical properties via treatments. The paper concludes with strategic recommendations for scaling production, standardizing feedstocks, and integrating circular economy principles to accelerate market penetration, using right processing method for agro—waste composites. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Annals of the Faculty of Engineering Hunedoara - International Journal of Engineering is the property of University Politehnica Timisoara, Faculty of Engineering Hunedoara and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Code: eng
        Text: English
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        PageCount: 10
        StartPage: 53
    Subjects:
      – SubjectFull: Fibrous composites
        Type: general
      – SubjectFull: Production methods
        Type: general
      – SubjectFull: Circular economy
        Type: general
      – SubjectFull: Cellulose fibers
        Type: general
      – SubjectFull: Polymeric composites
        Type: general
      – SubjectFull: Surface preparation
        Type: general
      – SubjectFull: Mechanical behavior of materials
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      – TitleFull: AGRO–WASTE FIBRE COMPOSITES MANUFACTURING: COMPARATIVE KEY METHODS AND CHALLENGES IN THEIR PROCESSING.
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            NameFull: KISS, Imre
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            NameFull: VLĂDUȚ, Valentin
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              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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