Evaluation of bionanocomposites blends for production of films by extrusion

• Grant number: 14/01100-1
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): August 01, 2014
• Effective date (End): April 30, 2018
• Field of knowledge: Agronomical Sciences - Food Science and Technology - Food Engineering
• Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Carmen Cecilia Tadini
• Grantee: Jaiber Humberto Rodriguez Llanos
• Home Institution: Faculdade de Zootecnia e Engenharia de Alimentos (FZEA). Universidade de São Paulo (USP). Pirassununga , SP, Brazil
• Associated scholarship(s): 16/18157-1 - Nanostructured biopolymer blends obtained by the extrusion method: development, characterization and application, BE.EP.DR

Abstract

The environmental problem caused by packaging from non-renewable, synthetic base and non-biodegradable sources led to a significant increase in research on the use of renewable, biodegradable materials, as is the case of films based on biopolymers. However, such films have limitations in their properties due to their sensitivity to ambient relative humidity. Among the alternatives studied to improve the characteristics of these materials is the use of nanoparticles and nano fibers, besides the bio-polymer blends. Thus, the aim of this project is to develop bio-polymer blends of starch and chitosan structured with nanoparticles of sodium smectite clay (montmorillonite) and cellulosic fibers from bamboo. The purpose is to study the effects of ratios of bio-polymers, nanoparticles and the extrusion process parameters, in addition to the dispersion quality of nanoparticles on the most important physicochemical properties of the films. The films will be prepared following these formulations: proportion of chitosan-starch (0 and 100)%; (25 and 75)%; (50 and 50)%; (75 and 25)%; (0 and 100)%, starch and chitosan will be mixed with nanoparticles in concentrations (0.0, 0.5, 1.0) g/100g of filmogenic solution and 30g glycerol/100g of filmogenic solution. The quality of the nanoparticles dispersion will be studied by scanning electron and atomic force microscopy, as well as the characteristics dimensions and the zeta potential of nanoparticles. Films will be characterized to determine their physicochemical and microstructural properties. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

RODRIGUEZ LLANOS, JAIBER HUMBERTO; TADINI, CARMEN CECILIA; GASTALDI, EMMANUELLE. New strategies to fabricate starch/chitosan-based composites by extrusion. Journal of Food Engineering, v. 290, FEB 2021. Web of Science Citations: 0.

LLANOS, JAIBER H. R.; TADINI, CARMEN C. Preparation and characterization of bio-nanocomposite films based on cassava starch or chitosan, reinforced with montmorillonite or bamboo nanofibers. International Journal of Biological Macromolecules, v. 107, n. A, p. 371-382, FEB 2018. Web of Science Citations: 18.