Silane-Functionalized Sheep Wool Fibers from Dairy Industry Waste for the Development of Plasticized PLA Composites with Maleinized Linseed Oil for Injection-Molded Parts
| Autor: | F. Parres, Miguel Aldas, Marina P. Arrieta, Juan López-Martínez, Franciszek Pawlak |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
food.ingredient
Materials science Polymers and Plastics injection molding 02 engineering and technology Article law.invention lcsh:QD241-441 Matrix (chemical analysis) chemistry.chemical_compound food sheep wool fiber lcsh:Organic chemistry Linseed oil law Fiber Crystallization Composite material maleinized linseed oil 020502 materials General Chemistry 021001 nanoscience & nanotechnology Silane Lactic acid silane coupling agents 0205 materials engineering chemistry Wool PLA Extrusion 0210 nano-technology |
| Zdroj: | Polymers Volume 12 Issue 11 Polymers, Vol 12, Iss 2523, p 2523 (2020) |
| ISSN: | 2073-4360 |
| DOI: | 10.3390/polym12112523 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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