Swelling Modelling and Kinetics Investigation of Polymer Hydrogel Composed of Chitosan-g-(AA-AM) | ||||
| Egyptian Journal of Chemistry | ||||
| Article 59, Volume 64, Issue 10, October 2021, Page 5999-6005 PDF (810.12 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2021.88530.4260 | ||||
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| Authors | ||||
Marwa Eid   1; Reham Yehia2; Ashraf amin 3
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| 1Department of Chemical Engineering and pilot plant, Engineering Research Division, National Research centre. | ||||
| 2Chemical ENgineering and pilot plant department, National Research Centre | ||||
| 3Chemical Engineering and Pilot Plant, National Research Centre, Cairo | ||||
| Abstract | ||||
| Swelling is one of the distinct properties and a significant parameter in the characterization of the crosslinked hydrogels. Swelling investigation at different temperatures was conducted for the produced hydrogel of chitosan grafted acrylamide/acrylic acid. Peleg’s model is a two parameters model, which can be used to describe the absorption of water or swelling. The data show that the swelling degree increases with temperature until it reaches 60°C, after which it decreases as the temperature rises higher. At RT, 30, 40, 60, and 80 °C, the swelling degree values of 1.4, 1.5,1.4, 2.3 and 0.7 g water/g dry hydrogel were observed after 8 hours. The applied models provided a good agreement with the experimental data with high values of the coefficient of determination (𝑅2). The observed F values and the standard error indicate the validity of the proposed model to describe the swelling of hydrogel at different temperatures. The swelling rate and swelling degree can be expressed using a 4th degree polynomial. It was concluded that the exponential association equation model represents swelling characteristics better than the others. | ||||
| Keywords | ||||
| Hydrogel; Swelling; Kinetics; Chitosan; Modeling | ||||
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