STATIC AND DYNAMIC LIGHT-SCATTERING STUDY OF FLUORINATED POLYMER COLLOIDS WITH A CRYSTALLINE INTERNAL STRUCTURE

The light scattering properties of polymer colloids made of polytetraf luoroethylene with added copolymers are described in some detail. The Particles possess a partially crystalline internal structure which mak es them optically anisotropic, and consequently gives rise to a strong depolarized component in the scattered light intensity. We present a complete theory of static and dynamic light scattering which includes the effects of polycrystallinity, of optical polydispersity, and of in terparticle interactions. We also discuss applications to surfactant a dsorption studies, to sedimentation experiments and to fractal aggrega tion processes