Study of the Flexural Strength of Recycled Dyed Cotton Fiber Reinforced Polypropylene Composites and the Effect of the Use of Maleic Anhydride as Coupling Agent

Autor: Albert Serra, Marc Delgado-Aguilar, Ramon Ripoll, Miquel Llorens, Francesc X. Espinach, Quim Tarrés
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Journal of Natural Fibers, Vol 19, Iss 14, Pp 7627-7639 (2022)
Druh dokumentu: article
ISSN: 1544-0478
1544-046X
15440478
DOI: 10.1080/15440478.2021.1952142
Popis: The flexural strengths of composite materials composed of polypropylene reinforced with cotton fibers recycled from textile waste are presented. Materials with and without coupling agents were prepared. The analysis of the flexural strength of the specimens showed promising properties, both, in the case of the coupled and uncoupled materials, showing their ability to substitute glass fiber reinforced composites. The presence of dyes in the recycled fibers had a noticeable impact on the properties of the composite. A micromechanics analysis showed that the interphase between the matrix and the reinforcements was stronger than expected for uncoupled materials and weaker than expected for coupled ones. The presence of dyes in the fiber surface had a positive effect by decreasing the hydrophilicity of the fibers, and at the same time inhibited the full exploitation of the coupling agents.
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