Abstract
The hydrogel film of chitosan with pore structure can be produced by using glutaraldehyde as reaction crosslinking agent to crosslink polyvinyl alcohol and chitosan, which has higher adsorption efficiency. The structure of film is characterized by infrared image, and its morphology is characterized by SEM. The adsorption of acid red 73 under different conditions is primarily studied. The results show that the hydrogel film has a three-dimensional porous microstructure, and the material kinetics is found to effectively absorb acid red 73, with a maximum adsorption amount of 6.5639 mg/g. It is proven as an ideal adsorption material. After studying the thermodynamics of adsorption of the material, △H < 0 was obtained, ∣△H∣ = −81.59861kJ/mol, which belongs to exothermic reaction, primarily reflected as chemical adsorption.
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Acknowledgements
1. Sheng Tong Sheng technology innovation fund, Gansu Agricultural University (No. GSAU-STS-1721); 2. open school of science, Gansu Agricultural University (No. GAU-XKJS-2018-16); 3. introduction of talents from Gansu Agricultural University (No. GSAU-RCZX201714).
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Jia, W., Wenjun, G., Zhifang, Z. et al. Infrared imaging of modified chitosan hydrogel film morphology study of polyvinyl alcohol adsorption. Multimed Tools Appl 79, 17027–17043 (2020). https://doi.org/10.1007/s11042-019-7555-y
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DOI: https://doi.org/10.1007/s11042-019-7555-y