Development of photo-modified starch/kefiran/TiO 2 bio-nanocomposite as an environmentally-friendly food packaging material.

Authors :: Goudarzi V
Shahabi-Ghahfarrokhi I
Source :: International journal of biological macromolecules [Int J Biol Macromol] 2018 Sep; Vol. 116, pp. 1082-1088. Date of Electronic Publication: 2018 May 21.
Publication Year :: 2018
Abstract: This paper reports on an experiment in which starch/kefiran/TiO <subscript>2</subscript> (SKT)-based bio-nanocomposite films were developed and modified by photo-chemical reaction. In so doing, film-forming solutions were exposed to ultraviolet A (UV-A) for different times (1, 6, and 12 h). The obtained results indicated that increasing UV-A exposure time brought about an increase (≈14.9%) in the tensile strength of bio-nanocomposites. However, elongation at break and Young's modulus of irradiated film specimen decreased (≈32%, ≈12%, respectively) by increasing UV-A exposure time, and the moisture-sensitive parameters of specimen decreased using UV-A irradiation. According to the results, the functional properties of irradiated bio-nanocomposite are depended on the ratio of cross-linkages between polymer chains and the potentially produced mono and disaccharide by UV-A.<br /> (Copyright © 2018 Elsevier B.V. All rights reserved.)

Subjects :: Food Packaging
Nanocomposites chemistry
Polysaccharides chemistry
Starch chemistry
Titanium chemistry
Ultraviolet Rays

Full Text Access

Tools