SPECIFIC INTERACTIONS AND THE RHEOLOGY OF PIGMENTED POLYMER-SOLUTIONS

Rheological properties have been measured for solutions of polyesters containing various amounts of organic and inorganic pigments. Complex behavior patterns were simplified by computing the effective volume fr action of dispersed solids, taking account of the thickness of polymer layers adsorbed at the pigment surface. The dimension of the adsorbed polymer interphase was rationalized by applying principles of specifi c interaction between polymers and solid surfaces. The necessary param eters of specific interaction were determined from inverse gas chromat ographic data.