Some of physical properties of polyvinyl alcohol dissolves in distilled water had been studied before and after
adding different weights of copper (II) chloride (CuCl2), the Rheological properties shows that the densities
variation are intangible and shear viscosity are responsible for reducing velocity, bulk modulus and
transmittance the absorption coefficient of ultrasonic waves and relaxation amplitude are increasing with
adding copper (II) chloride because there will be more molecules in solution and this lead to more
attenuation against wave propagation