Viscosity Study of the Solutions of Polyvinylidene Fluoride in Polar Solvent

摘要

Viscometric methods play a dominant role in studying the Polymer-Solvent interaction. Due to this interaction, there is an increase in viscosity of polymer solution over that of pure solvent. The intrinsic viscosity has been used to study the extent of interaction between polymer and solvent. In the present work, the density, velocity and viscosity measurements were made for the solutions of Poly Vinylidene Fluoride in polar solvent for different concentrations at different temperatures. Viscosity of the solvated part (η) is computed and the variation of η, with molar concentration (n) is studied. The methodology of arriving at the molar solvated volume (Φ) from (η) is verified by comparing the values of Φ with the value computed using the traditional equation. The correlation between Huggin's coefficients and the constants describing the solvated part is analyzed.