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Improved pervaporation efficiency of thin-film composite polyamide membranes fabricated through acetone-assisted interfacial polymerization
- Source :
- Chemical Engineering Research and Design. 165:375-385
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- • Promoting the separation efficiency of pervaporation membranes is a must to meet the growing demands of society. In this study, acetone-assisted interfacial polymerization was employed to produce thin-film composite (TFC) pervaporation membranes with improved performance. Two monomers were considered—diethylenetriamine (DETA) and trimesoyl chloride (TMC); they reacted with each other to form a thin polyamide layer, which was deposited on a hydrolyzed polyacrylonitrile (HPAN) substrate. Aqueous solutions containing different concentrations of acetone were used to dissolve DETA. Introducing acetone as a cosolvent of water enhanced the sorption of DETA in the HPAN support. It also altered and improved the physicochemical properties of the TFC membranes. An optimum concentration of 50 wt% aqueous acetone solution was established. Through acetone-assisted interfacial polymerization, a TFC membrane was then fabricated, and it exhibited a high separation efficiency: permeation flux = 1641 ± 134 g∙m−2 h−1 and water concentration in the permeate = 98%–99% (feed =70 wt% aqueous isopropanol solution). Moreover, the modified TFC membrane displayed a high separation performance at a wide range of operating conditions.
- Subjects :
- Aqueous solution
Materials science
General Chemical Engineering
Polyacrylonitrile
02 engineering and technology
General Chemistry
Permeation
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Interfacial polymerization
0104 chemical sciences
chemistry.chemical_compound
Membrane
chemistry
Chemical engineering
Thin-film composite membrane
Polyamide
Pervaporation
0210 nano-technology
Subjects
Details
- ISSN :
- 02638762
- Volume :
- 165
- Database :
- OpenAIRE
- Journal :
- Chemical Engineering Research and Design
- Accession number :
- edsair.doi...........a8b2fcfe9c54998c9ce8ee76d15e47be