Open AccessIonic Liquid Blend Thin Film Composite Membrane for Carbon Dioxide Separation
Author(s) -
Siti Nur Alwani Shafie,
Vinosha Viriya,
Nik Abdul Hadi Md Nordin,
Muhammad Roil Bilad,
Mohd Dzul Hakim Wirzal
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1142/1/012013
Subject(s) - membrane , permeation , fourier transform infrared spectroscopy , ionic liquid , gas separation , selectivity , materials science , differential scanning calorimetry , thin film composite membrane , chemical engineering , permeability (electromagnetism) , analytical chemistry (journal) , polymer , polymer chemistry , chromatography , chemistry , composite material , organic chemistry , catalysis , biochemistry , physics , reverse osmosis , engineering , thermodynamics
To utilize the superior properties of ionic liquid (IL), this work developed thin film composite (TFC) membrane incorporated with [EMIM][Tf 2 N] prepared via interfacial polymerization (IP). The effect of IL on membrane properties and CO 2 /CH 4 separation performance were studied. The IL loading was varied from 1-5wt%. The fabricated membranes were characterized and the gas separation performance of the membranes was evaluated in term of CO 2 permeability and CO 2 /CH 4 selectivity. Analysis from Fourier-transform Infrared Spectroscopy (FTIR) shows the presence of [EMIM][TF 2 N] functional groups proving the successful attachment of the IL in the membrane. Furthermore, it is noted that with increasing IL loading up to 3vol%, the surface morphology became rougher and the membrane became more rigid based on the Differential Scanning Calorimeter (DSC) thermogram and Atomic Force Microscopy(AFM) analysis, accordingly. Based on the gas permeation test at 1 bar feed pressure, membrane with 5wt% of IL showed CO 2 permeability of 3424.44 GPU and CO 2 /CH 4 selectivity of 32.15. Compared to pure TFC membrane, TFC/IL membranes showed as much as 103 times and 32 times improvement for CO 2 permeability and CO 2 /CH 4 selectivity, accordingly. The improved gas separation performance shows promising results of incorporating IL in TFC membrane for CO 2 separation.