Selvol™ Polyvinyl Alcohol is an excellent emulsifying and dispersing agent for a wide number of materials. It is one of the most used polymers for colloidal stabilization of vinyl-acetate based emulsions.
By using PVOH in the preparation of adhesives, your final product will have a variety of properties such us:
Before choosing any of the Selvol™ Polyvinyl Alcohol grades, you must consider the composition of the emulsion to be produced, polymerization conditions and the desire properties of the final product.
PVOH molecular weight and hydrolysis levels have a large influence on the final properties of the emulsion. In general, higher molecular weight PVOH grades will result in emulsion polymers with higher viscosity, increased shear thinning, higher tensile strength and higher wet tack. Lower hydrolysis levels will create good stability, increased water sensitivity and improved freeze – thaw stability.