Statistical analysis of the factors that influenced the mechanical properties improvement of cassava starch films

6th International Conference on Manufacturing Engineering and Process

工业技术;物理学

Monteiro, Mayra^1 ; Oliveira, Victor^2 ; Santos, Francisco^2 ; Neto, Eduardo Barros^1 ; Silva, Karyn^1 ; Silva, Rayane^1 ; Henrique, Joao^1 ; Chibério, Abimaelle^3

Universidade Federal Do Rio Grande Do Norte, UFRN, Natal

RN, Brazil^1

Universidade Federal Rural Do Semi-Arido, UFERSA, Mossoró

RN, Brazil^2

Universidade NOVA de Lisboa, Lisboa, Portugal^3

关键词: Cassava starch films;    Factorial analysis;    Factorial experiment;    Modified bentonites;    Packaging production;    Properties improvements;    Statistical significance;    Synthetic polymers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/885/1/012002/pdf
DOI  :  10.1088/1742-6596/885/1/012002

学科分类：工业工程学

来源: IOP

【 摘 要 】

In order to obtain cassava starch films with improved mechanical properties in relation to the synthetic polymer in the packaging production, a complete factorial design 23was carried out in order to investigate which factor significantly influences the tensile strength of the biofilm. The factors to be investigated were cassava starch, glycerol and modified clay contents. Modified bentonite clay was used as a filling material of the biofilm. Glycerol was the plasticizer used to thermoplastify cassava starch. The factorial analysis suggested a regression model capable of predicting the optimal mechanical property of the cassava starch film from the maximization of the tensile strength. The reliability of the regression model was tested by the correlation established with the experimental data through the following statistical analyse: Pareto graph. The modified clay was the factor of greater statistical significance on the observed response variable, being the factor that contributed most to the improvement of the mechanical property of the starch film. The factorial experiments showed that the interaction of glycerol with both modified clay and cassava starch was significant for the reduction of biofilm ductility. Modified clay and cassava starch contributed to the maximization of biofilm ductility, while glycerol contributed to the minimization.