海藻酸丙二醇酯（PGA）流变学特性的研究

he rheological properties of Propylene glycol alginate (PGA) were studied in this paper. The rheology of PGA under various conditions including temperature, concentration, pH, sucrose and the thixotropism under different temperature, as well as the dynamic viscoelasticity under different temperature, concentration, pH were comparative analyzed. The results showed that the PGA solution behaved as pseudo plastic non-Newtonian fluid, and it had thixotropism, increased with increasing concentration of PGA; the viscosity of PGA increased with the increasing of concentration and sucrose content, decreased with the increasing of shearing rate, temperature and pH. The PGA solution in the measurement frequency range showed a viscous, G″and G′increased with the increasing of concentration, decreased with the increasing of temperature and pH.