Static Light Scattering of Concentrated Particle Systems in the Rayleigh-Debye-Gans Regime

GUILLERMO E. ELICABE; FERNANDO OTERO

PARTICULATE SCIENCE AND TECHNOLOGY

TAYLOR & FRANCIS INC

Año: 2010 vol. 28 p. 485 - 497

0272-6351

In this work we have given an overview of the Rayleigh-Debye-Gans (RDG) theory applied in the analysis of Static Light Scattering (SLS) data of different types of concentrated particle systems. First some useful models needed to analyze SLS data under the RDG regime for concentrated particle systems were presented. We considered monodisperse as well as polydisperse systems of spherical and non-spherical particles. Then we presented some techniques for analyzing the SLS data in different contexts with the aim of gathering information about: particle size and shape, particle size distribution, particle concentration and some other useful parameters characterizing the particle systems. Finally we reported an application of some of the models and methods illustrated previously. They were used to characterize a system of concentrated polymer particles embedded in a solid polymer matrix, formed as the result of a phase separation induced by polymerization in a polymer blend. Keywords: Rayleigh-Debye-Gans, static light scattering, particle size distribution, structure factor, concentrated particles.