Rheological Behavior of LWC Coatings Containing Associative Cellulosic Thickeners, 1991 Coating Conference Proceedings
Rheological behavior of LWC coatings containing associative cellulosic thickeners (ACTS) was studied. The coatings were found to be highly structured under low shear conditions, and yet readily doctorable under blade coating conditions. Rheological properties of ACT-containing coatings that are pertinent to high-shear flow resistance, recovery of coating structure after shear, and immobilization solids were determined. According to adsorption studies, the rheological properties are governed primarily by the associative behavior of ACT in the wet coating. Methodologies for the study of rheological and associative behavior, which involve steady, oscillatory, and transient shear measurements and size-exclusion chromatography, are described.