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Modeling of Silver Migration from Polyethylene Nanocomposite Packaging into a Food Model System Using Response Surface Methodology

Maryam Jokar 1, Katrin Loeschner 1, and Abdorreza Mohammadi Nafchi 2
1. Research Group for Nano-Bio Science, Division of Food Technology, National Food Institute, Technical University of Denmark (DTU), Søborg, Denmark
2. Young Researchers and Elite Club, Damghan Branch, Islamic Azad University, Damghan, Semnan, Iran
Abstract—The objective of this study is to predict the variation in silver migration as a function of silver concentration, temperature and migration duration using polynomial model. Silver nanoparticles were produced via chemical reduction by using short-chain polyethylene glycol. Silver nanocomposites were prepared via two methods, namely, melt-blending and layer-by-layer self-assembling deposition. Surface response methodology was employed to investigate the effects of processing conditions, including processing method (melt blending and layer-by-layer coating) and silver nanoparticles concentration as well as migration conditions, including temperature, duration of contact, and contact media (water, 3% acetic acid, 10% ethanol, and apple juice), on the silver-ion migration of silver nanocomposites. Second-order polynomial regression models expressing silver-ion migrations as functions of the main numerical variables were significantly fitted (p<0.05) with a high coefficient of determination (R2>0.90). Migration time was considered as the most significant variable that affects silver-ion migration from silver nanocomposites.
Index Terms—silver migration, modeling, response surface, polyethylene nanocomposite

Cite: Maryam Jokar, Katrin Loeschner, and Abdorreza Mohammadi Nafchi, "Modeling of Silver Migration from Polyethylene Nanocomposite Packaging into a Food Model System Using Response Surface Methodology," International Journal of Food Engineering, Vol. 2, No. 2, pp. 96-102, December 2016. doi: 10.18178/ijfe.2.2.96-102
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