Obtaining and Characterizing Alginate/k-Carrageenan Hydrogel Cross-Linked with Adipic Dihydrazide
| Autor: | Adrian Dinescu, Mircea Cristian Dudescu, George Liviu Popescu, Gheorghe Borodi, Violeta Popescu, Marioara Moldovan, Violeta Paşcalău |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Article Subject Sodium General Engineering chemistry.chemical_element Adipic Dihydrazide chemistry.chemical_compound Biochemistry chemistry Covalent bond Self-healing hydrogels lcsh:TA401-492 Glycerol lcsh:Materials of engineering and construction. Mechanics of materials General Materials Science Reactivity (chemistry) Fourier transform infrared spectroscopy Derivative (chemistry) Nuclear chemistry |
| Zdroj: | Advances in Materials Science and Engineering, Vol 2013 (2013) |
| ISSN: | 1687-8442 1687-8434 |
| Popis: | The aim of this paper is obtaining and characterizing hydrogels based on different ratios of oxidized alginate (oA) and k-carrageenan (C), chemically cross-linked with adipic dihydrazide (adh). The alginate (A) was first oxidized with sodium metaperiodate in order to transform it into the dialdehyde derivative, a more reactive compound than alginate. A known procedure for oxidation of alginate with sodium metaperiodate in ethanol-water in order to improve alginate reactivity by transforming the hydroxyl end-groups into dialdehyde was used, preceded by a partially cleavage of the alginate chains. In the second stage, the mixture of dialdehydic derivative of oxidized alginate, k-carrageenan and glycerol subjected to reaction with adipic dihydrazide leads to a Semi-Interpenetrated Network covalently cross-linked alginate/k-carrageenan hydrogel (oACadh), based on the dihydrazone compound which is responsible for the chemical cross-linking. Pure alginate, k-carrageenan, oxidized alginate, adipic dihydrazide and the cross-linked hydrogel were characterized by: FTIR, XRD, and SEM. |
| Databáze: | OpenAIRE |
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