Journal of Applied Polymer Science, Vol. 107, 1917–1923 (2008 Synthesis and Characterization of Poly(ether-block-amide) Membranes for the Pervaporation of Organic/Aqueous Mixtures
Toraj Mohammadi, Towan Kikhavandi, Mohammadreza Moghbeli
ABSTRACT We made poly(ether-block-amide) mem-branes, the pervaporation of ethyl butyrate (ETB)/water branes by casting a solution on a nonsolvent surface. The and isopropyl alcohol/water mixtures was studied, and effects of the solvent ratio (n-butanol/isopropyl alcohol), high separation performance was achieved. For ETB/water temperature, and polymer concentration on the quality of mixtures, with increasing ETB content, both the permeation the membranes were studied. The results show that the flux and separation factor increased. However, for isopropyl film quality was enhanced with increasing isopropyl alco-alcohol/water mixtures, with increasing isopropyl alcohol hol ratio in the solvent. This behavior was related to the content, the permeation flux increased, but the separation reduction of the solution surface tension and the interfacial factor was diminished. Increasing temperature in a limited tension between the solution and nonsolvent. Uniform films range resulted in a decreasing separation factor and an were made at a temperature range of 70–808Cand apoly-increasing permeation flux. | 
