Título

Chitosan–Starch–Keratin composites: Improving thermo-mechanical and degradation properties through chemical modification

Autor

CYNTHIA GRACIELA FLORES HERNANDEZ

ARTURO COLIN CRUZ

CARLOS VELASCO SANTOS

Víctor Manuel Castaño Meneses

IMELDA OLIVAS ARMENDARIZ

Ana Laura Martínez Hernández

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Materias

Chemical modification - ([ISSN: 1566-2543 (Print) 1572-8900 (Online)]) Keratin - ([ISSN: 1566-2543 (Print) 1572-8900 (Online)]) Chicken feather - ([ISSN: 1566-2543 (Print) 1572-8900 (Online)]) Sodium hydroxide - ([ISSN: 1566-2543 (Print) 1572-8900 (Online)]) Biopolymer composite - ([ISSN: 1566-2543 (Print) 1572-8900 (Online)]) BIOLOGÍA Y QUÍMICA - (CTI)

Resumen o descripción

The lysozyme test shows an improved in the degradability rate, the weight loss of the films at 21 days is reduced from 73 % for chitosan-starch matrix up to 16 % for the composites with 5wt% of quill; but all films show a biodegradable character depending on keratin type and chemical modification. The outstanding properties related to the addition of treated keratin materials show that these natural composites are a remarkable alternative to potentiat-ing chitosan–starch films with sustainable features

Chitosan–starch polymers are reinforced with different keratin materials obtained from chicken feather. Keratin materials are treated with sodium hydroxide; the modified surfaces are rougher in comparison with untreated surfaces, observed by Scanning Electron Microscopy. The results obtained by Differential Scanning Calorimetry show an increase in the endothermic peak related to water evaporation of the films from 92 °C (matrix) up to 102–114 °C (reinforced composites). Glass transition temperature increases from 126 °C in the polymer matrix up to 170–200 °C for the composites. Additionally, the storage modulus in the composites is enhanced up to 1614 % for the composites with modified ground quill, 2522 % for composites with modified long fiber and 3206 % for the composites with modified short fiber. The lysozyme test shows an improved in the degradability rate, the weight loss of the films at 21 days is reduced from 73 % for chitosan-starch matrix up to 16 % for the composites with 5wt% of quill; but all films show a biodegradable character depending on keratin type and chemical modification. The outstanding properties related to the addition of treated keratin materials show that these natural composites are a remarkable alternative to potentiat-ing chitosan–starch films with sustainable features

Universidad Autónoma del Estado de México Tecnológico Nacional de México, Instituto Tecnológico de Querétaro Universidad Nacional Autónoma de México Tecnológico Nacional de México, Instituto Tecnológico de Celaya Universidad Autónoma de Cd. Juárez

Editor

Springer Science

Fecha de publicación

4 de abril de 2017

Tipo de publicación

Artículo

Recurso de información

http://hdl.handle.net/20.500.11799/67797

Fuente

ISSN: 1566-2543 (Print) 1572-8900 (Online)

Idioma

Inglés

Relación

DOI 10.1007/s10924-017-1115-1;

Audiencia

Estudiantes

Investigadores

Repositorio Orígen

REPOSITORIO INSTITUCIONAL DE LA UAEM

Descargas

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