The role of poly(methacrylic acid) conformation on dispersion behavior of nano TiO2 powder

► Stability maxima, optimum dosages can be derived from the potential characteristic. ► Free energy of adsorption(ΔGSP°) data by electrokinetic and adsorption compare well. ► Low pH more coiling of polymer, high pH extended configuration stable suspension. ► Conformation of polymer at S/L interface is important for stable dispersibility.