In Situ Rheological Measurement of an Aqueous Polyester Dispersion during Emulsification

Rheological analysis of a complex fluid system like an aqueous polymer dispersion can be challenging but can reveal mechanistic information as the viscous melt is emulsified. A pressurized vessel was used as a rheometer, based on the Metzner–Otto approach, to evaluate formulation variables where the developed morphology of a polyester/water mixture was shear-dependent. The parameters of the study were resin-to-water ratio (R/W), surfactant …