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Dynamical modeling and experimental analysis on the swelling behavior of the sIPN hydrogels / Saman Sotoudeh in Industrial & engineering chemistry research, Vol. 49 N° 20 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 20 (Octobre 2010) . - pp. 10111–10115 Titre : Dynamical modeling and experimental analysis on the swelling behavior of the sIPN hydrogels Type de document : texte imprimé Auteurs : Saman Sotoudeh, Auteur ; Ghazaleh Pourfallah, Auteur ; Abolfazl Barati, Auteur Année de publication : 2011 Article en page(s) : pp. 10111–10115 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Dynamic  Hydrogels Résumé : In this article, polyethylene glycol-acrylamide (PEG-AAm) hydrogels were experimentally prepared with a matrix structure and their swelling behaviors were tested. Different amounts of polyethylene glycol, acrylic acid, and acrylamide were added, and an optimum case was discovered. Effect of some parameters on the swelling was then investigated. A dynamic model based on the Maxwell−Stefan equation, Nernst−Planck equation, and Donnan theory was developed to consider the swelling behavior of hydrogels. These equations were applied to model the buffer diffusion inside the hydrogels in the swelling process. COMSOL software was also applied to simulate the swelling behavior in the hydrogels. The results showed that the data obtained from the modeling were in good agreement with the experimental data (the deviation value was around 16%). Further, COMSOL was able to simulate water diffusion process in the hydrogels, properly. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101062d [article] Dynamical modeling and experimental analysis on the swelling behavior of the sIPN hydrogels [texte imprimé] / Saman Sotoudeh, Auteur ; Ghazaleh Pourfallah, Auteur ; Abolfazl Barati, Auteur . - 2011 . - pp. 10111–10115. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 20 (Octobre 2010) . - pp. 10111–10115 Mots-clés : Dynamic  Hydrogels Résumé : In this article, polyethylene glycol-acrylamide (PEG-AAm) hydrogels were experimentally prepared with a matrix structure and their swelling behaviors were tested. Different amounts of polyethylene glycol, acrylic acid, and acrylamide were added, and an optimum case was discovered. Effect of some parameters on the swelling was then investigated. A dynamic model based on the Maxwell−Stefan equation, Nernst−Planck equation, and Donnan theory was developed to consider the swelling behavior of hydrogels. These equations were applied to model the buffer diffusion inside the hydrogels in the swelling process. COMSOL software was also applied to simulate the swelling behavior in the hydrogels. The results showed that the data obtained from the modeling were in good agreement with the experimental data (the deviation value was around 16%). Further, COMSOL was able to simulate water diffusion process in the hydrogels, properly. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101062d