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Investigation of water vapor permeability and antimicrobial property of zinc oxide nanoparticles‐loaded chitosan‐based edible film
Author(s) -
Bajpai S. K.,
Chand Navin,
Chaurasia Varsha
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.30550
Subject(s) - differential scanning calorimetry , chitosan , materials science , chemical engineering , scanning electron microscope , nanoparticle , zinc , plasticizer , permeability (electromagnetism) , water vapor , moisture , biopolymer , polymer chemistry , composite material , chemistry , polymer , nanotechnology , organic chemistry , membrane , thermodynamics , engineering , metallurgy , biochemistry , physics
This study is focused on the investigation of moisture uptake properties of chitosan films. The GAB isotherm model is found to fit well to the experimental moisture uptake data obtained at 10, 25, and 37°C. The water vapor permeability is found to increase with temperature. The use of plasticizer enhances the water vapor permeability. Finally, the films have been loaded with ZnO nanoparticles and characterized by X‐ray diffraction, differential scanning calorimetry, surface plasma resonance, and scanning electron microscopic analyses. The crystal size as determined using Scherrer's equation is found to be around 15 nm. The films have shown excellent antibacterial action against the model bacterium Escherichia coli . © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010