Summary
During the ageing (renaturation) process of 1–5% aqueous gelatin solutions the dynamic moduli were measured in the temperature range from −1.2 °C to 25.2 °C. The renaturation process appears to be strongly dependent on concentration, temperature and thermal history. The process at 25.2 °C appears to be of 3rd order, whereas the rate determining step appears to be the aggregation of mono helices into triple helices.
Zusammenfassung
Während der Alterung (Gelierung, Renaturierung) von 1–5% Lösungen von Gelatine in Wasser wurden deren Speicher- und Verlustmoduln in einem Temperaturbereich von −1,2 °C bis 25,2 °C gemessen. Der Alterungsprozeß hängt stark ab von der Konzentration, der Temperatur und der thermischen Vorgeschichte. Die Ordnung des Prozesses bei 25,2 °C ist drei und der geschwindigkeitsbestimmende Reaktionsschritt ist die Aggregation von monohelices in Tripelhelices.
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te Nijenhuis, K. Investigation into the ageing process in gels of gelatin/water systems by the measurement of their dynamic moduli. Colloid & Polymer Sci 259, 522–535 (1981). https://doi.org/10.1007/BF01397890
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DOI: https://doi.org/10.1007/BF01397890