Premium
Comparative studies on the effects of casting solvent on physico‐chemical and gas transport properties of dense polysulfone membrane used for CO 2 /CH 4 separation
Author(s) -
Adewole Jimoh K.,
Ahmad Abdul Latif,
Ismail Suzylawati,
Leo Choe Peng,
Sultan Abdullah S.
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.42205
Subject(s) - polysulfone , solvent , membrane , thermogravimetric analysis , polymer chemistry , chemical engineering , permeation , polymer , gas separation , materials science , diethylene glycol , dimethylacetamide , fourier transform infrared spectroscopy , casting , chemistry , analytical chemistry (journal) , organic chemistry , ethylene glycol , composite material , engineering , biochemistry
The effects of casting solvents on the physico–chemical and transport properties of polysulfone membranes were investigated. Comparative analysis of the properties of membranes prepared from a new solvent (diethylene glycol dimethyether, DEG) and other commonly used solvents (1‐methyl‐2‐pyrrolidone, N , N ‐dimethylacetamide, dimethyl sulfoxide and N , N ‐dimethylformamide) were performed using gas permeation, X‐ray diffraction, scanning electron microscopy, thermogravimetric, and Fourier transform infrared spectroscopy analyses. The degree of polymer–solvent interaction was evaluated using the solvent molar volume, and Hansen and Flory–Huggins parameters. Membrane prepared from DEG displayed a relatively higher permeability of 29.08 barrer and CO 2 /CH 4 selectivity of 23.12 compared to membranes prepared from other solvents. This improved performance was attributed to the better interaction between the DEG solvent and polysulfone than other solvents that were considered. DEG has the highest molar volume of 142.280 cm 3 /mol and the lowest Flory–Huggins parameter of 0.129. Thus a thorough evaluation of polymer–solvent interaction is very crucial in preparing membranes with optimum performance. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42205.