Prediction of Optimal Composition of Colloidal Suspensions for Preparation of Nanocomposite Ceramic Membranes by Fractional Collision Frequency Theory

Colloidal ceramic suspensions are extensively used in various industries, especially for preparation of nanocomposite ceramic membranes. The microstructure of ceramic nanocomposites is heavily dependent on the structure and stability of the starting ceramic colloids. There are several models to predict the optimal composition of bidispersed colloidal suspensions used in preparation of nanocomposite membranes. In this study, fractional collision frequency theory was used to predict the second phase volume fraction in several colloidal systems and the theoretical results were compared with experimental observations. Comparison of computational and experimental results broughtus to this conclusion that the fractional collision frequency is capable of predicting the second phase fraction when the matrix-to-second phase particle size is less than 10. Other models such as halos formation can be used for this purpose at higher ratios

کلیدواژه ها:

Colloidal suspensions ، nanocomposite ، ceramic membrane ، fractional collision frequency