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|Title:||Physical aging and carbon dioxide plasticization of thin polyetherimide films|
|Citation:||Xia, J.,Chung, T.S.,Li, P.,Horn, N.R.,Paul, D.R. (2012). Physical aging and carbon dioxide plasticization of thin polyetherimide films. AIChE 2012 - 2012 AIChE Annual Meeting, Conference Proceedings : -. ScholarBank@NUS Repository.|
|Abstract:||Industrial gas separation membranes have selective dense layers with thicknesses around 100 nm. It has long been assumed that these thin layers have the same properties as thick (bulk) films. However, recent research has shown that thin films with such thickness experience accelerated physical aging relative to bulk films and, thus, their permeation properties can differ significantly from the bulk. This paper explores the aging and carbon dioxide plasticization behavior of this new polyethermide and compares the results with those for PSF and Matrimid® 5218 from the previous work. Particular attention is devoted to the permeation response of thin films for a variety of CO2 conditions due to the current strong interest in CO2 related separations, such as the removal of CO2 from natural gas and flue gases. The CO2 plasticization of Extem thin films is proven to be a function of film thickness, aging time, exposure time, pressure and prior history.|
|Source Title:||AIChE 2012 - 2012 AIChE Annual Meeting, Conference Proceedings|
|Appears in Collections:||Staff Publications|
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