Study the Effect of adding Polyacrylamide on Rheological and Mechanical Properties of Carboxymethyle cellulose Polymer as aqueous solutions

In this paper, we investigated the Rheological and mechanical properties of Carboxymethyle cellulose dissolves in distilled water at different concentrations (0.1%, 0.2%, 0.3%, 0.4% ,0.5 ,%,0.6 %,0.7% and 0.8%) (gm./ml) before and after adding (0.5, 1) gm. of PAAM for all concentrations, the Rheological properties such as shear viscosity, relative viscosity, specific viscosity, reduced viscosity and Viscosity Average Molecular weight are measured, all the viscosities depend on density and concentration, The results show that adding PAAM lead to increase the values of different types of viscosities then chose before. Also the research included study of the Mechanical properties by ultrasonic waves velocity technique at frequency( 25 KHz), these properties are absorption coefficient of ultrasonic waves, relaxation time, relaxation amplitude, specific acoustic impedance, compressibility, and bulk modules had been measured and all the results showed that all properties are increasing with the increase of the polymer concentration except compressibility is decreasing with the increase of the concentration before and after adding PAAM. Keywords: Carboxymethyle cellulose, Polyacrylamide ,Rheological properties, Mechanical properties.