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Citation: HUANG Jia-Le, CHEN Jian-Rui, DONG Sheng-Xiong, GONG Qi, ZHOU Qiao-Qin. Structure and Property of Polyethersulfone Ultrafiltration Membrane[J]. Chinese Journal of Applied Chemistry, ;2003, 20(1): 51-54. shu

Structure and Property of Polyethersulfone Ultrafiltration Membrane

1.
College of Chemistry & Chemical Engineering, Fuzhou University, Fuzhou 350002

Corresponding author: DONG Sheng-Xiong,
Received Date: 1 April 2002
Available Online: 12 September 2002
Fund Project: 福建省自然科学基金资助项目(E0010012) (E0010012)福建省教育厅资助项目(JB01039) (JB01039)

Polyethersulfone(PES) ultrafitration membranes were prepared by a phase-inversion method. The water flux and the rejection of the membranes for vitamin B₁₂ were measured and their top layer and cross section morphology were observed by SEM. The formation of macrovoids in the sublayer of the membranes, effects of polyethersulfone mass fraction in the casting solution, as well as the presence of phosphoric acid on the structure of sublayer and property of the final membranes had been investigated. It was found that formation of top layer had a significant effect on the structure of the sublayer of membrance. The appropriate PES mass fraction appeared in between 12% and 18%. Morphology of top layer, structure of sublayer and property of the membranes could be controlled by addition of a small amount of phosphoric acid to the casting solution.
- ultrafiltration membrane,
- polyethersulfone,
- membrane structure,
- macrovoid
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