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Carbon Membranes Prepared from a Polymer Blend of Polyethylene Glycol and Polyetherimide
Author(s) -
Zainal Wan Nurul Huda Wan,
Tan Soon Huat,
Ahmad Mohd Azmier
Publication year - 2017
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201500752
Subject(s) - polyetherimide , membrane , materials science , polyethylene glycol , carbonization , polymer , chemical engineering , peg ratio , polymer chemistry , permeation , carbon fibers , synthetic membrane , pervaporation , porosity , polyethylene , composite material , chemistry , scanning electron microscope , biochemistry , finance , composite number , engineering , economics
Abstract Through a dip‐coating technique, carbon membranes were produced from a polymer blend consisting of the thermally stable polymer polyetherimide (PEI) and the thermally labile polymer polyethylene glycol (PEG). The PEG/PEI carbon membranes were synthesized on an alumina support coated with an Al 2 O 3 intermediate layer. The polymer blend ratio and carbonization temperature influenced the structure and permeation performance of the derived carbon membranes. The porosity of the PEG/PEI carbon membranes increased with higher PEG content in the blends. However, the derived carbon membranes tended to lose gas permeability with raising the carbonization temperatures. The carbon membranes were successfully optimized in order to achieve the highest CO 2 /CH 4 and CO 2 /N 2 selectivities.