Artículo
Thermoplastic starch films reinforced with talc nanoparticles
Castillo, Luciana Andrea
; Lopez, Olivia Valeria
; López, Cintia; Zaritzky, Noemi Elisabet
; Garcia, Maria Alejandra
; Barbosa, Silvia Elena
; Villar, Marcelo Armando
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Fecha de publicación:
06/2013
Editorial:
Elsevier
Revista:
Carbohydrate Polymers
ISSN:
0144-8617
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Nanocomposite films of thermoplastic corn starch (TPS) with talc particles were obtained by thermo-compression in order to study the effect of filler on structure, optical, and thermal properties. Talc increased the films rigid phase, thus their cross-sections resulted more irregular. Talc preferential orientation within matrix and good compatibility between particles and TPS was observed by SEM. Slight crystalline structure changes in TPS matrix were measured by XRD and DSC, due to talc nucleating effect. Randomly dispersed talc nanoagglomerates and individual platelets were assessed by TEM. Laminar morphology and nano-sized particles allowed that nanocomposite films were optically transparent. TPS-talc films resulted heterogeneous materials, presenting domains rich in glycerol and others rich in starch. Talc incorporation higher than 3%, w/w increased softening resistance of the nanocomposites as stated by DMA. Relaxation temperatures of glycerol-rich phase shifted to higher values since talc reduces the mobility of starch chains.
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Identificadores
Colecciones
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
Castillo, Luciana Andrea; Lopez, Olivia Valeria; López, Cintia; Zaritzky, Noemi Elisabet; Garcia, Maria Alejandra; et al.; Thermoplastic starch films reinforced with talc nanoparticles; Elsevier; Carbohydrate Polymers; 95; 2; 6-2013; 664-674
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