| Autor: |
Rendevski, Stojan J., Andonovski, Aleksandar N. |
| Zdroj: |
Polymer Bulletin; May 2005, Vol. 54 Issue: 1-2 p93-100, 8p |
| Abstrakt: |
Summary The time dependence of reaggregation of sodium alginate (SA) after following the shear-induced deaggregation of the aggregates (‘egg-box’ like microgel structures) at filtering through neutral 0.20 µm filters has been found. The aggregation of SA in solution prior to filtering was induced by addition 0.1 mM Ca2+ ions. For SA at concentration of 1mg/ml and room temperature, the reaggregation process is finished after four minutes from the end of the filtration of 3.5 cm3 of the solution with rate of filtration of 1 cm3/min. The reaggregation phenomenon is simply explained by diffusional driven processes of calcium ion – SA electrostatic interactions. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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