Increase of the Elastic Modulus of Cassava Starch Films with Modified Clay through Factorial Planning

Abstract:

In this study, was investigated the optimization of the factors that significantly influenced the mechanical property improvement of cassava starch nanocomposites through complete factorial design 23. The factors to be analyzed were cassava starch (A), glycerol (B) and modified clay (C) contents. The clay had its surface modified by anion exchange in the presence of a quaternary ammonium salt. The factorial analysis suggested a regression model capable of predicting the optimal mechanical property of the cassava starch biofilm from the maximization of the elastic modulus. The reliability of the regression model was tested by the correlation established with the experimental data through the following statistical analyzes: Pareto graph and response surface. The response surface showed the best combination of factor configurations to achieve the best response and SEM analysis in thermoplastic cassava starch biofilms in both the best and the worst elasticity conditions was performed to visualize the standard of the structure of the biopolymeric matrix in both conditions. The sequence of the degree of statistical significance on the elastic modulus in relation to the effects investigated is therefore C> B> A> BC> AC.

• Periodical: Materials Science Forum (Volume 958)
• Pages: 81-86
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.958.81
• Online since: June 2019
• Authors: Mayra Keroly Sales Monteiro*, Victor Rafael Leal Oliveira, Francisco Klebson Gomes dos Santos, Eduardo Lins Barros Neto, Leite Ricardo Henrique de Lima, Edna Maria Mendes Aroucha, Karyn Nathallye de Oliveira Silva
• Keywords: Cassava Starch Nanocomposites, Elastic Modulus, Factorial Analysis, Modified Clay

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