Study OF Rheological Properties Of (PEO-PMMA) ) Blends.

Abstract

This study includes measurement of some rheological properties of polyethylene oxide (PEO) , (polyethylene oxide + Polymethyl methacrylate( (PEO + PMMA ) polymers by using solvent Dimethylformamide (DMF) at room temperature such as density and shear viscosity. Other types of viscosities , viscosity average molecular weight and effective molecular radius were theoretically calculated. These samples were prepared in different concentrations (0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8 g/ml) % as solutions then the additive (PMMA) as (0.25 g ) and ( 0.5 g) respectively , where the samples were prepared by liquids mixture . Results show that there are an increases in the density values , shear viscosity , relative viscosity and intrinsic viscosity , with increasing concentration of (PEO) before and after adding (PMMA) polymer. However it was found that the reduced viscosity of (PEO) and its additive are inversely proportional with concentrations.