obtaining and characterizing alginate/k-carrageenan hydrogel cross-linked with adipic dihydrazide
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ID: 246038
2013
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Abstract
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.
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pacalu2013advancesobtaining
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| Authors | ;Violeta Paşcalău;Violeta Popescu;George L. Popescu;Mircea C. Dudescu;Gheorghe Borodi;Adrian M. Dinescu;Marioara Moldovan |
| Journal | bulletin of the korean chemical society |
| Year | 2013 |
| DOI |
10.1155/2013/380716
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