Entrapment and release of sodium polystyrene sulfonate (SPS) from calcium alginate gel beads
| Autor: | I. Rousseau, Luc Picton, Guy Muller, Jean-Francois Argillier, D. Le Cerf |
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| Rok vydání: | 2004 |
| Předmět: |
Molar mass
Materials science Calcium alginate Chromatography Polymers and Plastics education Organic Chemistry Kinetics General Physics and Astronomy Polyelectrolyte Entrapment chemistry.chemical_compound chemistry Chemical engineering Materials Chemistry Mannuronic acid Liberation Sodium Polystyrene Sulfonate |
| Zdroj: | European Polymer Journal. 40:2709-2715 |
| ISSN: | 0014-3057 |
| DOI: | 10.1016/j.eurpolymj.2004.07.022 |
| Popis: | The release of sodium polystyrene sulfonate (SPS) from calcium alginate hydrogel beads has been studied. It has been shown that the structure of the cross-linked calcium alginate network is of primary importance in the retention and/or release of the SPS. This has been evidenced by studying the influence of Ca 2+ concentration, molar masses ( M n ) and the ratio of mannuronic acid/guluronic acid components. A minimum in the SPS release is observed in relation with the organization of the network structure. Conditions inducing the organization of a strong gel (e.g. high Ca 2+ concentration for example) are not always related to a low release. A good control of release is found when a compromise between a well-structured hydrogel and sterical consideration of SPS is reached. |
| Databáze: | OpenAIRE |
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