Manufacturing technology and dynamic mechanical investigation of moisture‐resistant <scp><i>Luffa cylindrica</i></scp>‐reinforced epoxy composites

Papanicolaou, George; Zaoutsos, Stefanos; Anastasiou, Dimitrios E.

doi:10.1002/app.51697

Cited by 2 publications

(2 citation statements)

References 45 publications

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“…Luffa cylindrica chopped fibers were treated with 1% acetic acid in acetone, as we have previously described because we found that this treatment achieves the best performance. (Acetone serves as the solvent because this way fibers are not exposed to water which would dramatically increase their volume and lead to decreased properties) 50,51 …”

Section: Methodsmentioning

confidence: 99%

“…(Acetone serves as the solvent because this way fibers are not exposed to water which would dramatically increase their volume and lead to decreased properties). 50,51 Cotton flocks were partially acetylated (5% wt/wt acetyl groups) by thermal treatment with acetic acid and subsequent addition of acetic anhydride in the presence of perchloric acid (catalyst).…”

Section: Chemical Treatmentmentioning

confidence: 99%

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The exponential model versus a modified Chamis model and applications to sustainable particulate composites

Anastasiou

2023

J of Applied Polymer Sci

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The Exponential model is introduced to predict the modulus of particulate or short‐fiber reinforced composites. The model allows the prediction of Young's modulus, bending modulus, shear modulus, and bulk modulus in a series of composites from a single experimental point. Subsequently, a modification of the widely used Chamis model is introduced, also allowing the prediction of particulate composite moduli from a single experimental point. The predictions of each model are compared with original experimental data derived from tension tests on sustainable and bio‐based composites, covering common cases of thermosets and thermoplastics, as well as different chemical treatments and sizes of the reinforcing materials, and are plotted against the predictions of the rule of mixtures, the inverse rule of mixtures and the Chamis model. Two different matrices (PLA and Ecopoxy) and six different reinforcements (chemically treated and untreated Luffa cylindrica short fibers, acetylated and untreated cotton flocks, and olive pits of 1–5 μm or 50–150 μm diameter) are used. The comparisons show that both the proposed models are capable of achieving much higher prediction accuracy (2.28–59.51 times less root mean square error) than the three models already in use, and easily adapting to the matrix and/or reinforcement changes.

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Section: Methodsmentioning

confidence: 99%

Section: Chemical Treatmentmentioning

confidence: 99%

The exponential model versus a modified Chamis model and applications to sustainable particulate composites

Anastasiou

2023

J of Applied Polymer Sci

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Life cycle assessment of Luffa‐reinforced epoxy composites: Untreated versus chemically treated fibers

Anastasiou

2024

J of Applied Polymer Sci

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This research conducts a comprehensive cradle‐to‐gate life cycle assessment, comparing four distinct epoxy composites with each other and with the pure matrix. The composites investigated include epoxy resin reinforced with 25% and 50% untreated Luffa cylindrica fiber mats and 25% and 50% chemically treated Luffa cylindrica mats. The study defines the functional unit concerning the load at the fracture point and explores a real‐world scenario related to a potential industrial installation in southeastern Europe. The assessment utilizes 22 ReCiPe 2016 endpoint indicators to quantify impacts on human health, ecosystems, and resource availability. The findings indicate that the 50% chemically treated Luffa cylindrica‐reinforced epoxy has the least environmental impact, closely followed by the 50% untreated Luffa cylindrica. All four composites exhibit lower impacts than the pure epoxy resin. Notably, the 50% Luffa‐reinforced composites stand out as significantly environmentally favorable due to the substitution of fossil‐derived resin with natural fibers. This study underscores the potential of Luffa cylindrica as a promising and eco‐friendly reinforcement for epoxy composites.

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Manufacturing technology and dynamic mechanical investigation of moisture‐resistant Luffa cylindrica‐reinforced epoxy composites

Cited by 2 publications

References 45 publications

The exponential model versus a modified Chamis model and applications to sustainable particulate composites

The exponential model versus a modified Chamis model and applications to sustainable particulate composites

Life cycle assessment of Luffa‐reinforced epoxy composites: Untreated versus chemically treated fibers

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