Título
Thermal and mechanical properties of PLA-based multiscale cellulosic biocomposites
Autor
MIGUEL ANGEL RUZ CRUZ
Pedro Jesús Herrera Franco
Emmanuel Alejandro Flores Johnson
MARIA VERONICA MORENO CHULIM
LUCIANO MIGUEL GALERA MANZANO
Alex Valadez González
Nivel de Acceso
Acceso Abierto
Referencia de datos
datasetDOI/https://doi.org/10.1016/j.jmrt.2022.02.072
Materias
MULTISCALE BIOCOMPOSITES - (AUTORES) CELLULOSE MICROFIBER - (AUTORES) CELLULOSE NANOCRYSTALS - (AUTORES) HIERARCHICAL - (AUTORES) STRUCTURE - (AUTORES) PROPERTIES - (AUTORES) INGENIERÍA Y TECNOLOGÍA - (CTI) CIENCIAS TECNOLÓGICAS - (CTI) TECNOLOGÍA DE MATERIALES - (CTI) PROPIEDADES DE LOS MATERIALES - (CTI) PROPIEDADES DE LOS MATERIALES - (CTI)
Resumen o descripción
In this work polylactic acid (PLA) based multiscale cellulosic biocomposites were prepared with the aim to evaluate the effect of the incorporation of cellulose nanocrystals (CNCs) on the PLA biocomposites reinforced with cellulose microfibers (MFCs). For this, PLA composite materials reinforced with both MFCs and with a combination of MFCs and CNCs were prepared, while keeping the content of cellulosic reinforcements constant. The thermal and mechanical properties of these multiscale PLA biocomposites were characterized by thermogravimetry (TGA), differential scanning calorimetry (DSC), flexural mechanical and, dynamic mechanical (DMA) tests. Likewise, they were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The results show that the replacement of MFCs by CNCs in the 1–5% range appreciably modifies the thermal and mechanical properties of multiscale compounds. For example, they increase the thermal stability of the materials, modify the PLA crystallization process and play the role of adhesion promoters since the mechanical properties in flexure increase in the order of 40% and the storage modulus increases in the order of 35% at room temperature. Also, the addition of CNCs increases the relaxation temperature of the material from 50 to 60 °C, thereby expanding the temperature range for its use. © 2022 The Author(s)
Fecha de publicación
2022
Tipo de publicación
Artículo
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Fuente
Journal of Materials Research and Technology, 18, 485-495, 2022.
Idioma
Inglés
Relación
&
Valadez-González, A. (2022). Thermal and mechanical properties of PLA-based multiscale cellulosic biocomposites. Journal of Materials Research and Technology, 18, 485-495.
Sugerencia de citación
Ruz-Cruz, M. A., Herrera-Franco, P. J., Flores-Johnson, E. A., Moreno-Chulim, M. V., Galera-Manzano, L. M.,
Repositorio Orígen
Repositorio Institucional CICY
Descargas
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