Permeation behaviour in cellulose triacetate dense membrane during pervaporation separation of methanol/methyltert-butyl ether mixture
✍ Scribed by Cao, Shuguang; Shi, Yanqiao; Chen, Guanwen
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 165 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0959-8103
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✦ Synopsis
The pervaporation separation of methanol/methyl tert-butyl ether through cellulose triacetate dense membranes has been carried out under different feed compositions, permeation temperatures and temperature cycles to investigate the permeation behaviour of the membrane during pervaporation process. The experimental data indicate that the plasticization effect has a decisive in¯uence on pervaporation ¯ux, permselectivity and permeation activation energy. The results show that the penetrants of different feeds are transported through the membrane by different pathways with the in¯uence of plasticization effect at different temperatures. It has also been observed that plasticization had great effect on the membrane swelling and sorption selectivity. Furthermore, DSC results show that the membranes retain the in¯uence of the plasticization effect after pervaporation separations are tested.