Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (11): 2591.doi: 10.7503/cjcu20111126

• Polymer Chemistry • Previous Articles    

Fabrication of PEBAX®2533/PSf Hollow Fiber Composition Membrane and Its Transfer Resistance

DING Xiao-Li, ZHANG Chao, ZHANG Yu-Zhong, CAO Zhan-Ping   

  1. School of Material Science and Engineering, State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin 300387, China
  • Received:2011-11-26 Online:2012-11-10 Published:2012-10-15
  • Contact: Ding Xiao-Li E-mail:darading@126.com

Abstract:

Poly(ether block amide) (PEBAX®2533)/polysulfone (PSf) hollow fiber composite membranes were fabricated by dip-coating technique. The effects of coating concentration, coating temperature, pretreatment on membrane structure, resistance and performance were studied. The effect of operation pressure on membrane performance was studied. The experimental results show that with the increase of the coating concentration, the thickness and resistance of dense skin increase, the total resistance and resistance of support layer first increase and then decrease, the CO2 permeance first decreases and then increases, the selectivity increases. With the increase of the coating temperature, the thickness and resistance of dense skin decrease, the resistance of support layer increases, the total resistance first decreases and then increases, the permeances and selectivity first increase and then decrease. The membrane resistance decreases with the pretreatment, and the CO2 permeance increases 58% with the slightly decrease of selectivity. The compact structure with large resistance in support layer affects the plastic phenomenon of the composite membrane.

Key words: Membrane resistance, Pretreatment, Hollow fiber composite membranes, CO2 separation

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