| Title: |
Obtaining and Characterizing Alginate/k-Carrageenan Hydrogel Cross-Linked with Adipic Dihydrazide |
| Authors: |
Violeta Paşcalău; Violeta Popescu; George L. Popescu; Mircea C. Dudescu; Gheorghe Borodi; Adrian M. Dinescu; Marioara Moldovan |
| Source: |
Advances in Materials Science and Engineering, Vol 2013 (2013) |
| Publisher Information: |
Wiley |
| Publication Year: |
2013 |
| Collection: |
Directory of Open Access Journals: DOAJ Articles |
| Subject Terms: |
Materials of engineering and construction. Mechanics of materials; TA401-492 |
| Description: |
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. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
http://dx.doi.org/10.1155/2013/380716; https://doaj.org/toc/1687-8434; https://doaj.org/toc/1687-8442; https://doaj.org/article/5f59db6ecde1485b88094d30aabe4201 |
| DOI: |
10.1155/2013/380716 |
| Availability: |
https://doi.org/10.1155/2013/380716; https://doaj.org/article/5f59db6ecde1485b88094d30aabe4201 |
| Accession Number: |
edsbas.709CFE3A |
| Database: |
BASE |