Abstract: Polyethersulfone (PES) hollow fiber membranes have been widely used in many fields, such as ultrafiltration, microfiltration, reverse osmosis, liquid/liquid or liquid/solid separation, gas separation, hemodialysis, and so on. In this paper, the sheet PES hollow fiber membranes were prepared. The morphology and performance of membranes can be controlled. By studying the influence of the compositions and conditions on the morphology and performance of PES hollow fiber membrane, the relationship of morphology and performance of the membrane is acquired. Immerse phase inversion was used as membranes preparation method. The performance of the membrane was controlled by changing the concentration of PES, air setting time, and so on. It was found that the membrane morphologies were changed by the temperature of coagulation bath obviously. Porosity, pure water flux, scanning electron microscopy(SEM) were used to characterize the morphology and performance of the membranes. From the study, the parameters for membrane preparation with good performance and ideal structure were summarized.

Key words: polyethersulfone, hollow fiber, ultrafiltration membrane, preparation, performance