Modeling and Investigation of the Swelling Kinetics of Acrylamide-Sodium Acrylate Hydrogel
The acrylamide-sodium acrylate hydrogel was synthesized by free radical polymerization of the method of solution polymerization. Dynamic swelling tests were conducted at 25, 40, and 60°C temperatures, in order to investigate the swelling properties of the synthesized hydrogel. The results have shown...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2014/281063 |
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| author | Azmi Seyhun Kipcak Osman Ismail Ibrahim Doymaz Sabriye Piskin |
| author_facet | Azmi Seyhun Kipcak Osman Ismail Ibrahim Doymaz Sabriye Piskin |
| author_sort | Azmi Seyhun Kipcak |
| collection | DOAJ |
| description | The acrylamide-sodium acrylate hydrogel was synthesized by free radical polymerization of the method of solution polymerization. Dynamic swelling tests were conducted at 25, 40, and 60°C temperatures, in order to investigate the swelling properties of the synthesized hydrogel. The results have shown that swelling content and swelling rate of the hydrogel increase with increasing the swelling water temperature. The diffusivity values changed from 1.81×10-7 to 2.97×10-7 m2 s−1 over the temperature range. The activation energies were found as 3.56, 3.71, and 3.86 kJ mol−1 at 25, 40, and 60°C, respectively. The experimental drying curves obtained were fitted to a three different models, namely, Peleg’s, first-order absorption kinetic, and exponential association equation models. All the models applied provided a good agreement with the experimental data with high values of the coefficient of determination (R2), the least values of the reduced chi-square (χ2), and root mean square error (RMSE). Comparing the determination of coefficient, reduced chi-square, and root mean square error values of three models, it was concluded that the exponential association equation model represents swelling characteristics better than the others. |
| format | Article |
| id | doaj-art-29ccaf122d0d4befb73f2b9bb1464502 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
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| series | Journal of Chemistry |
| spelling | doaj-art-29ccaf122d0d4befb73f2b9bb14645022025-02-03T05:52:59ZengWileyJournal of Chemistry2090-90632090-90712014-01-01201410.1155/2014/281063281063Modeling and Investigation of the Swelling Kinetics of Acrylamide-Sodium Acrylate HydrogelAzmi Seyhun Kipcak0Osman Ismail1Ibrahim Doymaz2Sabriye Piskin3Department of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Davutpasa Campus, Davutpasa Street No. 127, Esenler, 34210 Istanbul, TurkeyDepartment of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Davutpasa Campus, Davutpasa Street No. 127, Esenler, 34210 Istanbul, TurkeyDepartment of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Davutpasa Campus, Davutpasa Street No. 127, Esenler, 34210 Istanbul, TurkeyDepartment of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Yildiz Technical University, Davutpasa Campus, Davutpasa Street No. 127, Esenler, 34210 Istanbul, TurkeyThe acrylamide-sodium acrylate hydrogel was synthesized by free radical polymerization of the method of solution polymerization. Dynamic swelling tests were conducted at 25, 40, and 60°C temperatures, in order to investigate the swelling properties of the synthesized hydrogel. The results have shown that swelling content and swelling rate of the hydrogel increase with increasing the swelling water temperature. The diffusivity values changed from 1.81×10-7 to 2.97×10-7 m2 s−1 over the temperature range. The activation energies were found as 3.56, 3.71, and 3.86 kJ mol−1 at 25, 40, and 60°C, respectively. The experimental drying curves obtained were fitted to a three different models, namely, Peleg’s, first-order absorption kinetic, and exponential association equation models. All the models applied provided a good agreement with the experimental data with high values of the coefficient of determination (R2), the least values of the reduced chi-square (χ2), and root mean square error (RMSE). Comparing the determination of coefficient, reduced chi-square, and root mean square error values of three models, it was concluded that the exponential association equation model represents swelling characteristics better than the others.http://dx.doi.org/10.1155/2014/281063 |
| spellingShingle | Azmi Seyhun Kipcak Osman Ismail Ibrahim Doymaz Sabriye Piskin Modeling and Investigation of the Swelling Kinetics of Acrylamide-Sodium Acrylate Hydrogel Journal of Chemistry |
| title | Modeling and Investigation of the Swelling Kinetics of Acrylamide-Sodium Acrylate Hydrogel |
| title_full | Modeling and Investigation of the Swelling Kinetics of Acrylamide-Sodium Acrylate Hydrogel |
| title_fullStr | Modeling and Investigation of the Swelling Kinetics of Acrylamide-Sodium Acrylate Hydrogel |
| title_full_unstemmed | Modeling and Investigation of the Swelling Kinetics of Acrylamide-Sodium Acrylate Hydrogel |
| title_short | Modeling and Investigation of the Swelling Kinetics of Acrylamide-Sodium Acrylate Hydrogel |
| title_sort | modeling and investigation of the swelling kinetics of acrylamide sodium acrylate hydrogel |
| url | http://dx.doi.org/10.1155/2014/281063 |
| work_keys_str_mv | AT azmiseyhunkipcak modelingandinvestigationoftheswellingkineticsofacrylamidesodiumacrylatehydrogel AT osmanismail modelingandinvestigationoftheswellingkineticsofacrylamidesodiumacrylatehydrogel AT ibrahimdoymaz modelingandinvestigationoftheswellingkineticsofacrylamidesodiumacrylatehydrogel AT sabriyepiskin modelingandinvestigationoftheswellingkineticsofacrylamidesodiumacrylatehydrogel |