Abstract
AbstractConsideration has been given to the creep of furcellaran gels concentrated to 0.5‐2.0% at temperatures of 25 to 50 °C in the region of linear viscoelasticity. The gel shear modulus (G) corresponding to reversible strain decreases with temperature. The dependence of the shear modulus on concentration at 25 C has the form G ∞ c2.7. The gel irreversible strain is observed in the entire temperature interval studied. The dependence of the largest NEWTONian viscosity on temperature is described by De Guzman‐Arrhenius' equation. The apparent activation energy of viscous flow for a 1.25%‐gel is 63 ± 5 kJ/mole. The dependence of the largest NEWTONian viscosity (ηN) on oncentration at 25 °C has the form ηN ∞ c3.1 The break‐down enthalpy of the gel cross‐link is relatively small (18‐25 kJ/mole).
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