Nosrat Madadi Mahani - University of , Payam Noor Sirjan, Iran

Thermodynamic properties of polymer solutions are important for understanding solute- solute and solute –solvent interactions.knowledge of volumetric properties of polymer solutions has been proven to be a very useful tool in evaluating the structural interactions occurring in these solution[1].Density or specific volume is an essential physical property required either directly in the design of polymer processing operations or as an input parameter to obtain various other design variables[2].