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Acetone-modulated interfacial polymerization of thin-film composite polyamide membrane for improved pervaporation dehydration of isopropanol.

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Title: Acetone-modulated interfacial polymerization of thin-film composite polyamide membrane for improved pervaporation dehydration of isopropanol.
Authors: Chen, Hsi1 (AUTHOR), Gallardo, Marwin R.1 (AUTHOR), Li, Chi-Lan1 (AUTHOR), Tsai, Hui-An1 (AUTHOR), Chang, Yung1 (AUTHOR), Huang, Shu-Hsien1,2 (AUTHOR) huangsh@niu.edu.tw, Lee, Kueir-Rarn1 (AUTHOR) krlee@cycu.edu.tw
Source: Journal of Polymer Research. Feb2026, Vol. 33 Issue 2, p1-11. 11p.
Subjects: Pervaporation, Polyamide membranes, Polymerization, Dehydration reactions, Membrane separation, Acetone, Composite membranes (Chemistry), Polymers
Abstract: In this study, acetone-assisted interfacial polymerization (IP) was employed to fabricate thin-film composite (TFC) membrane with enhanced pervaporation performance. The selective polyamide layer was formed by the reaction of meta-phenylenediamine (MPD) and trimesoyl chloride (TMC) on hydrolyzed polyacrylonitrile (PAN) support. Acetone was introduced into the aqueous MPD phase at varying concentrations to regulate monomer diffusion and reaction kinetics at the interface of water and n-hexane. The influence of acetone content on polyamide membrane structure and intrinsic pervaporation separation performance was systematically investigated. Among the fabricated membranes, the TFC–A75 membrane, prepared with 75 wt% acetone in the aqueous phase, exhibited superior separation properties. When tested with a 70 wt% isopropanol/water mixture at 25 °C, the membrane delivered a high permeation flux of 1199.5 ± 135.9 g·m⁻2·h⁻1 and an outstanding water content of 99.42 ± 0.67 wt% in the permeate. Furthermore, the membrane maintained excellent separation efficiency across a wide range of feed temperatures and concentrations, confirming both its robustness and applicability for isopropanol dehydration. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:In this study, acetone-assisted interfacial polymerization (IP) was employed to fabricate thin-film composite (TFC) membrane with enhanced pervaporation performance. The selective polyamide layer was formed by the reaction of meta-phenylenediamine (MPD) and trimesoyl chloride (TMC) on hydrolyzed polyacrylonitrile (PAN) support. Acetone was introduced into the aqueous MPD phase at varying concentrations to regulate monomer diffusion and reaction kinetics at the interface of water and n-hexane. The influence of acetone content on polyamide membrane structure and intrinsic pervaporation separation performance was systematically investigated. Among the fabricated membranes, the TFC–A75 membrane, prepared with 75 wt% acetone in the aqueous phase, exhibited superior separation properties. When tested with a 70 wt% isopropanol/water mixture at 25 °C, the membrane delivered a high permeation flux of 1199.5 ± 135.9 g·m⁻2·h⁻1 and an outstanding water content of 99.42 ± 0.67 wt% in the permeate. Furthermore, the membrane maintained excellent separation efficiency across a wide range of feed temperatures and concentrations, confirming both its robustness and applicability for isopropanol dehydration. [ABSTRACT FROM AUTHOR]
ISSN:10229760
DOI:10.1007/s10965-025-04750-0