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Water vapor removal using CA / PEG blending materials coated hollow fiber membrane
Author(s) -
Kim KeeHong,
Ingole Pravin G.,
Yun SangHee,
Choi WonKil,
Kim JongHak,
Lee HyungKeun
Publication year - 2015
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.4421
Subject(s) - permeance , peg ratio , polyethylene glycol , chemical engineering , water vapor , membrane , permeation , coating , materials science , fiber , cellulose acetate , gas separation , selectivity , methyl cellulose , chemistry , polymer chemistry , cellulose , composite material , organic chemistry , biochemistry , finance , engineering , economics , catalysis
BACKGROUND In this study, a polyethersulfone composite hollow fiber membrane was used for the separation of water vapor from mixed gas. For improvement of the separation properties, the fabricated membrane was coated with cellulose acetate ( CA ) and polyethylene glycol ( PEG ). RESULTS Experiments on the permeation of water vapor and N 2 gas mixture were performed to observe membrane behavior as a function of the coating conditions, such as the composition and molecular weight of PEG . The water vapor permeance and selectivity of water vapor/ N 2 improved from 68.5 GPU to 444.1 GPU and from 76.1 to 175.5, respectively, using 5 wt% PEG 2000 blended coating solution. CONCLUSION An increase in the PEG content and molecular weight of the coating solution affected the permeance and selectivity due to the hydrophilicity of PEG and the structural changes of the coating layer. © 2014 Society of Chemical Industry