To improve the permeation rate of polyamide, the polyamide composite membrane was prepared by the interfacial polymerization of triethylenetetramine (TETA) and trimesoyl chloride (TMC) on the surface of the modified polyacrylonitrile (mPAN) membrane and was applied in the pervaporation separation of alcohol aqueous solutions. The effect of immersion temperature of TETA aqueous solution on the pervaporation performance was investigated. For the pervaporation separation of 90 wt% ethanol/water solution, the permeation rate increased with an increase in the immersion temperature of TETA aqueous solution. However, the water concentration in permeate decreased slightly (< 1 wt%) and then remained unchanged almost. When the immersion temperature of TETA aqueous solution increased, the permeation rate increased without sacrificing the water concentration in permeate for 70 wt% isopropanol/water solution. Nevertheless, both the permeation rate and the water concentration in permeate increased for 70 wt% tetrafluoropropanol/water solution.
The 8th Conference on Membrane Sci. & Tech，起迄日：2008/6/27~2008/6/27，地點：中壢