Preparation of Biodegradable Film by Starch/TiO2 Bio-Nanocomposite: Physicochemical Characterization

Document Type : Original Article

Authors

1 Teb plastic industrial group, R&D department (Ph.D. Student in Polymer Engineering, Iran Polymer and Petrochemical Institute)

2 Master of food industry engineering, Food industry department, Zanjan university

Abstract

In this study, biodegradable starch-based films were made as biodegradable packaging by solution molding method. The effect of addition of titanium dioxide nanoparticles (at three levels of 1, 3 and 5 wt. %) on the films prepared from starch biopolymer was evaluated. Surface properties, physical properties, water vapor permeability, mechanical properties and microstructure characteristics of the samples were investigated. The results showed that the addition of titanium dioxide nanoparticles reduced the water-dependent properties (water vapor permeability, solubility and water absorption) of the starch film. Titanium dioxide nanoparticles reduce the tensile strength and increase the elongation of the films. Scanning electron microscope observations showed that most of the physical properties of the films were related to their microstructure.

Keywords

References

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History

  • Receive Date: 23 October 2019
  • Revise Date: 21 November 2019
  • Accept Date: 21 January 2020

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