Artículos de revistas
Effect Of Process Conditions On The Production Of Nanocomposite Films Based On Amaranth Flour And Montmorillonite
Registro en:
Effect Of Process Conditions On The Production Of Nanocomposite Films Based On Amaranth Flour And Montmorillonite. Elsevier Science Bv, v. 61, p. 70-79 APR-2015.
0023-6438
WOS:000348953100011
10.1016/j.lwt.2014.11.017
Autor
Villaman Dieguez
Maria Cristina; Pelissari
Franciele Maria; Do Amaral Sobral
Paulo Jose; Menegalli
Florencia Cecilia
Institución
Resumen
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) This study investigated how the nanoclay content (C-MMT) and process temperature (T-p) affected the production of amaranth flour/clay nanocomposite films. The developed methodology involved preparation of a casting suspension at montmorillonite (MMT) concentrations ranging from 0 up to 9.7 g/100 g of flour and used 25 g of glycerol/100 g of flour, which afforded easily manageable films. Statistical analysis of the results was conducted by the response surface methodology and desirability function, and the optimal process conditions for film formation were determined. Both C-MMT and T-p influenced the mechanical properties and solubility of the films. MMT addition to the nanocomposite films formulation improved the mechanical properties and the solubility moderately, but it significantly reduced the water vapor permeability (WVP). This indicates that the nanoclay restructured the starch phase, as verified by differential scanning calorimetry (DSC) measurements. The desirability function employed here allowed for the establishment of the optimal process conditions, which were C-MMT = 9.4 g/100 g of flour and T-P = 83 degrees C, and proved to be an effective tool for this type of study. (C) 2014 Elsevier Ltd. All rights reserved. 61 1
70 79 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) CAPES [2952/2011] CNPq [477482/2011-9]