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Maryam Kouchak 1 Article
Evaluation of the Mechanical Properties and Drug Permeability of Chitosan/Eudragit RL Composite Film
Maryam Kouchak, Somayeh Handali, Basireh Naseri Boroujeni
Osong Public Health Res Perspect. 2015;6(1):14-19.   Published online February 28, 2015
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AbstractAbstract PDF
The aim of this study was to design and evaluate a chitosan-based film that has properties required for successful wound dressing, and can control drug penetration and maintenance time in the location.
Several formulations of a film containing chitosan (3%) and different concentrations of Eudragit RL (0.5%, 1%, and 1.5%) were prepared using the casting/solvent evaporating technique. Mechanical properties, water vapor transmission rate (WVTR), oxygen permeability, water uptake, and nitrofurazone permeability through the films were investigated.
The study results showed that by increasing the Eudragit RL content of composite films, their thickness and tensile strength were enhanced, while their elongation was decreased. No significant difference was observed between the oxygen permeability, WVTR, and water uptake results of pure chitosan films and different composite films containing Eudragit RL. Nitrofurazone permeability of chitosan films was increased by the inclusion of Eudragit RL in composite films, while by increasing the concentration of Eudragit RL, the permeation rate of drug was decreased.
In conclusion, addition of Eudragit RL can improve mechanical properties of chitosan films without any undesirable effect on their water uptake, oxygen permeability, and WVTR qualities. The permeation rate of drugs through the composite films can be modified by changing Eudragit RL/chitosan ratio.


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