Valorization of agricultural waste lignocellulosic fibers for poly(3-hydroxybutyrate-co-valerate)-based composites in short shelf-life applications
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Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7034
comunitat-uji-handle3:10234/8619
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Títol
Valorization of agricultural waste lignocellulosic fibers for poly(3-hydroxybutyrate-co-valerate)-based composites in short shelf-life applicationsAutoria
Data de publicació
2023-11-23Editor
MDPIISSN
2073-4360Cita bibliogràfica
Samaniego-Aguilar, Kerly, Estefanía Sánchez-Safont, Andreina Rodríguez, Anna Marín, María V. Candal, Luis Cabedo, and Jose Gamez-Perez. (2023). "Valorization of Agricultural Waste Lignocellulosic Fibers for Poly(3-Hydroxybutyrate-Co-Valerate)-Based Composites in Short Shelf-Life Applications" Polymers 15, no. 23: 4507.Tipus de document
info:eu-repo/semantics/articleVersió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
Biocircularity could play a key role in the circular economy, particularly in applications where organic recycling (composting) has the potential to become a preferred waste management option, such as food packaging. ... [+]
Biocircularity could play a key role in the circular economy, particularly in applications where organic recycling (composting) has the potential to become a preferred waste management option, such as food packaging. The development of fully biobased and biodegradable composites could help reduce plastic waste and valorize agro-based residues. In this study, extruded films made of composites of polyhydroxybutyrate-co-valerate (PHBV) and lignocellulosic fibers, namely almond shell (AS) and Oryzite® (OR), a polymer hybrid composite precursor, have been investigated. Scanning electron microscopy (SEM) analysis revealed a weak fiber–matrix interfacial interaction, although OR composites present a better distribution of the fiber and a virtually lower presence of “pull-out”. Thermogravimetric analysis showed that the presence of fibers reduced the onset and maximum degradation temperatures of PHBV, with a greater reduction observed with higher fiber content. The addition of fibers also affected the melting behavior and crystallinity of PHBV, particularly with OR addition, showing a decrease in crystallinity, melting, and crystallization temperatures as fiber content increased. The mechanical behavior of composites varied with fiber type and concentration. While the incorporation of AS results in a reduction in all mechanical parameters, the addition of OR leads to a slight improvement in elongation at break. The addition of fibers improved the thermoformability of PHBV. In the case of AS, the improvement in the processing window was achieved at lower fiber contents, while in the case of OR, the improvement was observed at a fiber content of 20%. Biodisintegration tests showed that the presence of fibers promoted the degradation of the composites, with higher fiber concentrations leading to faster degradation. Indeed, the time of complete biodisintegration was reduced by approximately 30% in the composites with 20% and 30% AS. [-]
Publicat a
Polymers Vol. 15 Issue 23 (2023)Entitat finançadora
Ministerio de Ciencia e Innovación, Agencia Estatal de Investigación (AEI) | FEDER | Generalitat Valenciana | Universitat Jaume I
Codi del projecte o subvenció
MCIN/AEI/10.13039/501100011033 | RTI2018-097249-B-C21 | AICO/2021/045 | UJI-B2019-44
Títol del projecte o subvenció
Una manera de hacer Europa
Drets d'accés
info:eu-repo/semantics/openAccess
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