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- Title
Obtaining and Characterizing Alginate/k-Carrageenan Hydrogel Cross-Linked with Adipic Dihydrazide.
- Authors
Paşcalău, Violeta; Popescu, Violeta; Popescu, George L.; Dudescu, Mircea C.; Borodi, Gheorghe; Dinescu, Adrian M.; Moldovan, Marioara
- 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 endgroups 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 reactionwith 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.
- Subjects
ALGINATES; CARRAGEENANS; HYDROGELS; ADIPIC acid; ALDEHYDE derivatives; CROSSLINKING (Polymerization); REACTIVITY (Chemistry); SODIUM
- Publication
Advances in Materials Science & Engineering, 2013, p1
- ISSN
1687-8434
- Publication type
Article
- DOI
10.1155/2013/380716