NDLI: Vacuum-Assisted Interfacial Polymerization Technique for Enhanced Pervaporation Separation Performance of Thin-Film Composite Membranes

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Vacuum-Assisted Interfacial Polymerization Technique for Enhanced Pervaporation Separation Performance of Thin-Film Composite Membranes

Content Provider	MDPI
Author	Gallardo, Marwin R. Ang, Micah Belle Marie Yap Millare, Jeremiah C. Huang, Shu-Hsien Tsai, Hui-An Lee, Kueir-Rarn
Copyright Year	2022
Description	In this work, thin-film composite polyamide membranes were fabricated using triethylenetetramine (TETA) and trimesoyl chloride (TMC) following the vacuum-assisted interfacial polymerization (VAIP) method for the pervaporation (PV) dehydration of aqueous isopropanol (IPA) solution. The physical and chemical properties as well as separation performance of the $TFC_{VAIP}$ membranes were compared with the membrane prepared using the traditional interfacial polymerization (TIP) technique $(TFC_{TIP}$). Characterization results showed that the $TFC_{VAIP}$ membrane had a higher crosslinking degree, higher surface roughness, and denser structure than the $TFC_{TIP}$ membrane. As a result, the $TFC_{VAIP}$ membrane exhibited a higher separation performance in 70 wt.% aqueous IPA solution at 25 °C with permeation flux of 1504 ± 169 $g∙m^{−2}∙h^{−1}$, water concentration in permeate of 99.26 ± 0.53 wt%, and separation factor of 314 (five times higher than $TFC_{TIP}$). Moreover, the optimization of IP parameters, such as variation of TETA and TMC concentrations as well as polymerization time for the $TFC_{VAIP}$ membrane, was carried out. The optimum condition in fabricating the $TFC_{VAIP}$ membrane was 0.05 wt.% TETA, 0.1 wt% TMC, and 60 s polymerization time.
Starting Page	508
e-ISSN	20770375
DOI	10.3390/membranes12050508
Journal	Membranes
Issue Number	5
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2022-05-10
Access Restriction	Open
Subject Keyword	Membranes Thin-film Composite Membranes Pervaporation Interfacial Polymerization Polyamide
Content Type	Text
Resource Type	Article

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