A General Correlation between Steady Shear and Dynamic Properties of Dilute Polymer Solutions at Zero Shear and Frequency Conditions
1991 年 19 巻 2 号 p. 98-105
詳細
1991 年 19 巻 2 号 p. 98-105
A simple relationship between the steady-shear polymer viscosity and the zero-frequency storage modulus for dilute polymer solutions is developed. It combines the Oldroyd-B model with the Zimm theory yielding a result that enables the prediction of elastic properties from a given ηp at zero deformation conditions. A correlation established from a large number of experimental data obtained for various solutions of polyacrylamide (Separan) and a polyisobutylene (PIB) agrees well with the theoretical expression. The relationship is also found to be applicable to other polymeric systems such as dilute solutions of xanthan gum and Pusher 700. Based on the simple fluid theory, the correlation may be used to predict the first normal stress coefficient at zero sear rate condition.
