Preparation and Characterization of Novel Poly(Lactic Acid) Composites Reinforced with "Latxa" Sheep Wool Fibers: The Effect of Peroxide Surface Treatments and Fiber Content

"Latxa" sheep wool is rough, and it is not used in the textile industry because the fiber diameter is high compared with other wool fibers. Nowadays, this wool is considered as disposal and, with the aim to give it value, new uses must be explored. In the current work, the "Latxa"...

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Bibliographic Details
Published in:Materials 2024-10, Vol.17 (19), p.4912
Main Authors: Arbelaiz, Aitor, Yurramendi, Telmo, Larruscain, Ander, Arrizabalaga, Ane, Eceiza, Arantxa, Peña-Rodriguez, Cristina
Format: Article
Language:English
Subjects:
Adhesive strength
Amino acids
Composite materials
Contact angle
Fiber-matrix adhesion
Flame retardants
Flammability
Fourier transforms
Glycerol
Injection molding
Lactic acid
Mechanical properties
Nitrogen
Oxidation
Polylactic acid
Polymers
Sheep
Spectrum analysis
Surface treatment
Textile fibers
Thermogravimetric analysis
Vegetable fibers
Wool
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Summary:"Latxa" sheep wool is rough, and it is not used in the textile industry because the fiber diameter is high compared with other wool fibers. Nowadays, this wool is considered as disposal and, with the aim to give it value, new uses must be explored. In the current work, the "Latxa" sheep wool fiber was evaluated as poly(lactic acid) (PLA) polymer reinforcement. With the objective to optimize fiber/matrix adhesion, fibers were surface modified with peroxide. Oxidation treatment with peroxide led to chemical modifications of the wool fibers that improved the fiber/PLA adhesion, but the strength values achieved for the composites were lower compared to the neat PLA ones. The mechanical properties obtained in the current work were compared with the literature data of the PLA composites reinforced with vegetable fibers. The wool fibers showed inferior mechanical properties compared to the vegetable fiber counterparts. However, the preliminary results indicated that the incorporation of wool fibers to PLA reduced the flammability of composites.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma17194912