A rapid separation method for gel content determination in pressure sensitive adhesive dispersions and acrylic-based latices for an industrial setting.

A rapid method has been developed for determining gel content in industrial samples such as water-borne pressure sensitive adhesives (PSAs) and acrylic-based latices. The method is based on thermal field-flow fractionation (ThFFF) and evaporative light scattering detection (ELSD). Results are compared to those obtained using a centrifugation-based gravimetric method.