Modeling of the relationship between pore size distribution and thickness of ceramic MF membrane

摘要

The pore size distribution(PSD)measured by the gas bubble point(GBP)method of ceramic microfiltration(MF)membranes prepared by suspension technique was found to be signifi- cantly influenced by the membrane thickness. A culm-like model for pore structure was introduced to characterize the membrane pores instead of the conventional model which does not reflect the radius variation along the pore passages and is unable to explain the thickness effect on the membrane PSD. A laminate structure, taking the culm-like model for pore structure into consideration, was hypoth- Esized for ceramic MF membranes.