Enhancing Composite Performance: Hydrothermally Treated Wood Reinforcement in Recycled Polypropylene

1
Andressa dos Santos
Andressa dos Santos
2
Raphael Leonardo Bulla
Raphael Leonardo Bulla
3
Laís Weber Aguiar
Laís Weber Aguiar
4
Murilo Pereira Moises
Murilo Pereira Moises
5
Eduardo Radovanovic
Eduardo Radovanovic
6
Silvia Luciana Favaro
Silvia Luciana Favaro

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The low thermal stability of cellulose presents unique technological challenges to the formulation of wood and plastic composites that are compatible and processable. For this, hydrothermal modification is a well-established technology for improving dimensional stability and durability of wood’s components, in addition to providing better interaction with the polymer. This study produced polymer composites in which hydrothermally treated wood waste fibers (WT) reinforce a recycled polypropylene (RPP) matrix. Wood waste fibers were selected by grain size and distribution, treated hydrothermally, and characterized by SEM, ATR-FTIR, and water sorption. Composites were produced varying the reaction time of treatment hydrothermal (from 30 to 180 minutes), granulometric size (from 425 to 1400 μm) and percentage of WT (from 10 to 20%), following a 2³ full-factorial experimental design, by extrusion with internal recirculation and the mechanical test specimens were modulated by injection. Tensile, flexion, IZOD impact and water sorption tests were statistically analyzed. Reaction time was the most statistically significant factor.

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No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

Andressa dos Santos. 2026. \u201cEnhancing Composite Performance: Hydrothermally Treated Wood Reinforcement in Recycled Polypropylene\u201d. Global Journal of Research in Engineering - A : Mechanical & Mechanics GJRE-A Volume 24 (GJRE Volume 24 Issue A2): .

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Hydrothermally reinforced wood.
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Crossref Journal DOI 10.17406/gjre

Print ISSN 0975-5861

e-ISSN 2249-4596

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v1.2

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January 6, 2025

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English

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The low thermal stability of cellulose presents unique technological challenges to the formulation of wood and plastic composites that are compatible and processable. For this, hydrothermal modification is a well-established technology for improving dimensional stability and durability of wood’s components, in addition to providing better interaction with the polymer. This study produced polymer composites in which hydrothermally treated wood waste fibers (WT) reinforce a recycled polypropylene (RPP) matrix. Wood waste fibers were selected by grain size and distribution, treated hydrothermally, and characterized by SEM, ATR-FTIR, and water sorption. Composites were produced varying the reaction time of treatment hydrothermal (from 30 to 180 minutes), granulometric size (from 425 to 1400 μm) and percentage of WT (from 10 to 20%), following a 2³ full-factorial experimental design, by extrusion with internal recirculation and the mechanical test specimens were modulated by injection. Tensile, flexion, IZOD impact and water sorption tests were statistically analyzed. Reaction time was the most statistically significant factor.

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Enhancing Composite Performance: Hydrothermally Treated Wood Reinforcement in Recycled Polypropylene

Andressa dos Santos
Andressa dos Santos
Raphael Leonardo Bulla
Raphael Leonardo Bulla
Laís Weber Aguiar
Laís Weber Aguiar
Murilo Pereira Moises
Murilo Pereira Moises
Eduardo Radovanovic
Eduardo Radovanovic
Silvia Luciana Favaro
Silvia Luciana Favaro

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