X-ray tomography-assisted study of a phase inversion process in ceramic hollow fiber systems – Towards practical structural design

Tao Li, Xuekun Lu, Bo Wang, Zhentao Wu, Kang Li, Dan J.L. Brett, Paul R. Shearing

In this study, a series of alumina hollow fibers have been prepared with varied polymer binder (polyethersulfone, PESf) concentration and new polymer-based internal coagulant (aqueous solution of polyvinyl alcohol, PVA). For the first time, the micro-channels were characterized in 3D using X-ray CT to determine micro-channel densities and diameters in the radial direction, as well as the 2D measurement of the pore size in the sponge-like layer.