Artículo
Simple citric acid-catalyzed surface esterification of cellulose nanocrystals
Avila Ramirez, Jhon Alejandro
; Fortunati, Elena; Kenny, José M.; Torre, Luigi; Foresti, María Laura
Fecha de publicación:
02/2017
Editorial:
Elsevier
Revista:
Carbohydrate Polymers
ISSN:
0144-8617
e-ISSN:
1879-1344
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A simple straightforward route for the surface esterification of cellulose nanocrystals (CNC) is herein proposed. CNC obtained from microcrystalline cellulose were acetylated using as catalyst citric acid, a α-hydroxy acid present in citrus fruits and industrially produced by certain molds in sucrose or glucose-containing medium. No additional solvent was added to the system; instead, the acylant (acetic anhydride) was used in sufficient excess to allow CNC dispersion and proper suspension agitation. By tuning the catalyst load, CNC with two different degree of substitution (i.e. DS = 0.18 and 0.34) were obtained. Acetylated cellulose nanocrystals were characterized in terms of chemical structure, crystallinity, morphology, thermal decomposition and dispersion in a non-polar solvent. Results illustrated for the first time the suitability of the protocol proposed for the simple surface acetylation of cellulose nanocrystals.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(ITPN)
Articulos de INSTITUTO DE TECNOLOGIA EN POLIMEROS Y NANOTECNOLOGIA
Articulos de INSTITUTO DE TECNOLOGIA EN POLIMEROS Y NANOTECNOLOGIA
Citación
Avila Ramirez, Jhon Alejandro; Fortunati, Elena; Kenny, José M.; Torre, Luigi; Foresti, María Laura; Simple citric acid-catalyzed surface esterification of cellulose nanocrystals; Elsevier; Carbohydrate Polymers; 157; 2-2017; 1358-1364
Compartir
Altmétricas