Structure of silica determined by use of a light-scattering method

Publisher Website
Google Scholar
Abstract
Electric-light-scattering and centrifugation measurements of normal and sonicated suspensions containing vapor-phase aggregates of silica show the existence of two types of clusters. The first one is composed from smaller and more anisotropic clusters. Their fractal dimension, obtained from the correlation between electric-light-scattering and centrifugation data, was 1.8±0.1. The second type is composed from the biggest and more isotropic clusters. After sonication the fractal dimension of the aggregates rises to 2.3–2.8, which may be related to a process of reorganization accompanying the destruction of the clusters.