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Type: Artigo
Title: Effect of process conditions on the production of nanocomposite films based on amaranth flour and montmorillonite
Author: Diéguez, María Cristina Villamán
Pelissari, Franciele Maria
Sobral, Paulo José do Amaral
Menegalli, Florencia Cecilia
Abstract: This study investigated how the nanoclay content (CMMT) and process temperature (TP) 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 CMMT and TP 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 CMMT = 9.4 g/100 g of flour and TP = 83 °C, and proved to be an effective tool for this type of study
Subject: Montmorilonita
Country: Países Baixos
Editor: Elsevier
Rights: Fechado
Identifier DOI: 10.1016/j.lwt.2014.11.017
Date Issue: 2015
Appears in Collections:FEA - Artigos e Outros Documentos

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