CHARACTERIZATION OF EMULSION POLYMERIZATIONS THROUGH ULTRASOUND PROPAGATION VELOCITY-MEASUREMENTS

The application of the measurement of ultrasound waves propagation vel ocity for characterizing emulsion polymerization systems is discussed. The ultrasound velocity sensor provides informations about various pr operties of interest in emulsion polymerization systems. These include the evaluation of monomer solubility and emulsifier critical micellar concentration in water, the in-situ and on-line monitoring of convers ion in homo- and co-polymerizations, the investigation of the polymer glass transition and finally the measure of monomer solubility in subm icron polymer particles.