Montmorillonite dispersion in water affects some physical properties of gelatin based nanocomposites films

Author(s)

Flaker, Christian H. C. ^[1] ; Lourenco, Rodrigo V. ^[1] ; Bittante, Ana Monica Q. B. ^[1] ; Sobral, Paulo J. A. ^[1]

Affiliation

^[1] Univ Sao Paulo, FZEA, Dept Food Engn, Ave Duque Caxias Norte, 225, BR-13635900 Pirassununga, SP - Brazil

• Document type: Journal article
• Source: BIOINTERFACE RESEARCH IN APPLIED CHEMISTRY; v. 6, n. 2, p. 1093-1098, APR 15 2016.
• Web of Science Citations: 2

Abstract

The aim of this work was to study both the effect the montmorillonite (MMT) dispersion method in water and the nanoparticle concentration on some physical properties of gelatin based films produced with those dispersions. MMT was dispersed in water using two devices: Colloidal mill (CM) and ultrasonic processor (US). These dispersions were analyzed for determination of particle size and zeta potential. Films were produced by spreading and characterized for determination of mechanical properties, hydrophobicity, and microstructure, among others. It was obtained stable MMT dispersions with average particle size of 289 and 395 nm, for US and CM dispersions, respectively. In general, the films filled with MMT were up to 50% less glossy and rougher than control film. The tensile strength increased up to 50% in nanocomposites. The dispersion method used had a strong influence on the quality of dispersions affecting the particle size and zeta potential, with evident effect on the properties of nanocomposite films. (AU)

• FAPESP's process: 11/15784-1 - Study of the dispersion of nanoparticles in water and its effect on properties of gelatin-based nanocomposits
• Grantee: Christian Humberto Caicedo Flaker
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 13/07914-8 - FoRC - Food Research Center
• Grantee: Bernadette Dora Gombossy de Melo Franco
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC