Modified fique tow fibers as a reinforcing agent in the manufacture of biocomposite materials: Extraction and characterization

Modified fique tow fibers as a reinforcing agent in the manufacture of biocomposite materials: Extraction and characterization

This study evaluates the effects of successive treatments on fique tow fibers (NF) for their application in biocomposites materials. The fibers underwent autoclaving (AF), delignification with 5 % NaOH (DF), and bleaching with 5 % NaClO for 30 (BF30), 60 (BF60), and 90 (BF90) minutes. Chemical compo...

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Bibliographic Details
Main Authors: Elsa Susana Cajiao-Buitrón, Jhon Jairo Palechor-Trochez, Heidi Andrea Fonseca-Florido, Diana Paola Navia-Porras, Héctor Samuel Villada-Castillo, José Fernando Solanilla-Duque
Format: Article
Language:English
Published: Elsevier 2025-09-01
Series:Results in Engineering
Subjects:
Lignocellulosic fibers
Surface modification
Fique tow
Hydrophobicity
Online Access:http://www.sciencedirect.com/science/article/pii/S2590123025027847
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Summary:This study evaluates the effects of successive treatments on fique tow fibers (NF) for their application in biocomposites materials. The fibers underwent autoclaving (AF), delignification with 5 % NaOH (DF), and bleaching with 5 % NaClO for 30 (BF30), 60 (BF60), and 90 (BF90) minutes. Chemical composition, crystalline structure, thermal stability, and surface morphology were significantly altered by these treatments. FTIR confirmed the removal of hemicellulose and lignin, with BF90 exhibiting 85.71 % crystallinity due to increased cellulose content. Alkaline treatment created surface grooves, while bleaching caused fibrillation, enhancing fiber-matrix adhesion. Thermal analyses demonstrated improved stability, particularly in BF60 and BF90. Biocomposites with cassava bran showed that BF60 improved the flexural modulus by 20 % and reached a contact angle of 113.67°, indicating hydrophobicity. SEM analysis of the biocomposites revealed improved adhesion between cassava brain and bleached fibers. A strong Pearson correlation (0.99) was found between the fibers’ color coordinates and mechanical properties, emphasizing the influence of surface modification. The increase in thermal stability was evidenced in biocomposites made with BF60. The study highlights the combined use of NaOH and NaClO as an effective method for enhancing the properties of fique fibers for biopolymer reinforcement, offering a sustainable alternative to synthetic composites.
ISSN:2590-1230

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