Silane-Functionalized Sheep Wool Fibers from Dairy Industry Waste for the Development of Plasticized PLA Composites with Maleinized Linseed Oil for Injection-Molded Parts

Franciszek Pawlak; Miguel Aldas; Francisco Parres; Juan López-Martínez; Marina Patricia Arrieta

doi:10.3390/polym12112523

journal article Open Access Oct 29, 2020

Silane-Functionalized Sheep Wool Fibers from Dairy Industry Waste for the Development of Plasticized PLA Composites with Maleinized Linseed Oil for Injection-Molded Parts

Franciszek Pawlak

Miguel Aldas

Francisco Parres

Juan López-Martínez

Marina Patricia Arrieta

Polymers Vol. 12 No. 11 pp. 2523 · MDPI AG

View at Publisher Save 10.3390/polym12112523

Abstract

Poly(lactic acid) (PLA) was plasticized with maleinized linseed oil (MLO) and further reinforced with sheep wool fibers recovered from the dairy industry. The wool fibers were firstly functionalized with 1 and 2.5 phr of tris(2-methoxyethoxy)(vinyl) (TVS) silane coupling agent and were further used in 1, 5, and 10 phr to reinforce the PLA/MLO matrix. Then, the composite materials were processed by extrusion, followed by injection-molding processes. The mechanical, thermal, microstructural, and surface properties were assessed. While the addition of untreated wool fibers to the plasticized PLA/MLO matrix caused a general decrease in the mechanical properties, the TVS treatment was able to slightly compensate for such mechanical losses. Additionally, a shift in cold crystallization and a decrease in the degree of crystallization were observed due to the fiber silane modification. The microstructural analysis confirmed enhanced interaction between silane-modified fibers and the polymeric matrix. The inclusion of the fiber into the PLA/MLO matrix made the obtained material more hydrophobic, while the yellowish color of the material increased with the fiber content.

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References

Details

Published: Oct 29, 2020
Vol/Issue: 12(11)
Pages: 2523
License: View

Authors

F

Franciszek Pawlak

Faculty of Technology and Chemical Engineering, University of Science and Technology in Bydgoszcz, Seminaryjna 3, PL-85326 Bydgoszcz, Poland; Instituto de Tecnología de Materiales, Universitat Politècnica de València, Plaza Ferrándiz y Carbonelle, 03801 Alcoy-Alicante, Spain

M

Miguel Aldas

Instituto de Tecnología de Materiales, Universitat Politècnica de València, Plaza Ferrándiz y Carbonelle, 03801 Alcoy-Alicante, Spain; Departamento de Ciencia de Alimentos y Biotecnología, Facultad de Ingeniería Química y Agroindustria, Escuela Politécnica Nacional, Ladrón de Guevera E11-253, Quito 170517, Ecuador

F

Francisco Parres

Instituto de Tecnología de Materiales, Universitat Politècnica de València, Plaza Ferrándiz y Carbonelle, 03801 Alcoy-Alicante, Spain

J

Juan López-Martínez

Instituto de Tecnología de Materiales, Universitat Politècnica de València, Plaza Ferrándiz y Carbonelle, 03801 Alcoy-Alicante, Spain

M

Marina Patricia Arrieta

Departamento de Ingeniería Química y del Medio Ambiente, Escuela Politécnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid (ETSII-UPM), Calle José Gutiérrez Abascal 2, 28006 Madrid, Spain; Grupo de Investigación—Polímeros, Caracterización y Aplicaciones (POLCA), 28006 Madrid, Spain

Funding

Ministerio de Economía y Competitividad Award: MAT2017-84909-C2-2-R

Secretaría de Educación Superior, Ciencia, Tecnología e Innovación Award: MA

Escuela Politécnica Nacional Award: MA

Cite This Article

Franciszek Pawlak, Miguel Aldas, Francisco Parres, et al. (2020). Silane-Functionalized Sheep Wool Fibers from Dairy Industry Waste for the Development of Plasticized PLA Composites with Maleinized Linseed Oil for Injection-Molded Parts. Polymers, 12(11), 2523. https://doi.org/10.3390/polym12112523

Silane-Functionalized Sheep Wool Fibers from Dairy Industry Waste for the Development of Plasticized PLA Composites with Maleinized Linseed Oil for Injection-Molded Parts

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