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SYNTHESIS OF NANOCELLULOSE AS MECHANICAL REINFORCEMENT OF THERMOPLASTIC STARCH
SÍNTESIS DE NANOCELULOSA COMO REFUERZO MECÁNICO DE ALMIDÓN TERMOPLÁSTICO
DOI:
https://doi.org/10.15446/mo.n67.103549Keywords:
thermoplastic, nanocellulose, mechanical properties (en)termoplástico, nanocelulosa, propiedades mecánicas (es)
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Nanocellulose was successfully synthetized from microcrystalline cellulose by an acid hydrolysis process. The sample characterization was performed employing X-ray diffraction, zeta potential and confocal Raman microscopy. Nanocellulose-reinforced thermoplastic starch (TPS) composites were prepared by solution casting method, in which a small concentration of nanocellulose improved the elastic modulus of TPS. This property was calculated using the atomic force microscopy nanoindentation method. We conclude that nanocellulose is a good mechanical reinforcement for composites from commercial sources as starch.
Se sintetizó exitosamente nanocelulosa a partir de celulosa microcristalina mediante un proceso de hidrólisis ácida. La caracterización de la muestra se realizó mediante difracción de rayos X, potencial zeta y microscopía Raman confocal. Se prepararon compuestos de almidón termoplástico (TPS, por sus siglas en inglés) reforzados con nanocelulosa mediante el método “casting solution”, en el que una pequeña concentración de nanocelulosa mejoró el módulo de elasticidad del TPS. Esta propiedad se calculó mediante el método de nanoindentación por microscopía de fuerza atómica. Llegamos a la conclusión de que la nanocelulosa es un buen refuerzo mecánico para los compuestos de fuentes comerciales como el almidón.
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