Synthesis and rheological studies of methacrylic acid-ethyl acrylate-allyl methacrylate terpolymers

Methacrylic acid-ethyl acrylate-allyl methacrylate terpolymers were synthesized by using precipitation polymerization using toluene as the solvent. The theological studies of the synthesized polymers were made using Brookfield viscometer at 20 rpm and room temperature (30 +/- 1 degrees C). Crosslinked polymers (1% w/w) were mixed with water and the pH of the solution was raised to 7.5-8.2 by the addition of 28% solution of ammonia. The effect of various factors like methacrylic acid content, crosslinking agent (AMA) content, solid content, shear rate, pH and electrolyte concentration added on viscosity was studied.