Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 363, Issue 1-2, Pages 302-308Publisher
ELSEVIER
DOI: 10.1016/j.memsci.2010.07.049
Keywords
Polycarbonate membrane; Carbon dioxide permeability; Plasticization; Free-volume distribution; Positron annihilation lifetime spectroscopy
Categories
Funding
- Chung Yuan University, Taiwan [CYCU-98-CR-CE]
- Ministry of Economic Affairs
- Ministry of Education Affairs
- National Science Council of Taiwan
Ask authors/readers for more resources
In this study, the microstructural changes in polycarbonate (PC) membranes induced by the CO2 sorption were investigated using the CO2 sorption isotherm data and the positron annihilation lifetime spectroscopy (PALS). The effects of the PC exposure to CO2 at different temperatures and gas pressures on the free-volume distribution were discussed. The distribution at ambient conditions or 5 atm He pressure displayed a monomodal curve, whereas that at different CO2 pressures showed a bimodal curve, indicating the presence of small and big free-volume sizes due to the serious plasticization caused by CO2. (C) 2010 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available