EFFECTIVE CHARGE ON POLYMER COLLOIDS OBTAINED USING A RENORMALIZATIONMODEL

Static light scattering has been used to study the electrostatic inter action between colloidal particles. Experiments were carried out using a latex with a very small diameter, allowing structure determination at high particle concentration. The obtained effective charge characte rizing this interaction is found to be smaller than the bare charge de termined from titration. A renormalization model connecting both value s has been used. The agreement between the renormalized charge and tha t obtained from scattering data seems to point out that this model ope rates well. (C) 1998 Academic Press.