Study on rheological properties of Propylene glycol alginate

A MCR-101 remoter was used to determine the rheological properties of Propylene glycol alginate under various conditions concentration, pH, sucrose, salt and temperature. The results showed that the Propylene glycol alginate solution behaved as pseudo plastic fluid and could be fitted by Powerl-Law model, the viscosity of Propylene glycol alginate increased with the increasing of concentration and sucrose content, decreased with the increasing of shearing rate, pH and temperature;first decreased at the lower concentration (0.01 and 0.1mol/L) of NaCl and increased at the concentration of 1mol/L. Propylene glycol alginate had thixotropism and viscoelasticity, which primarily behaved viscosity in the low frequency area system and elasticity in the higher one. the point of intersection of G′ and G″ was influenced by concentration, pH and temperature.