Title of article
Investigation on CO2-induced plasticization in polycarbonate membrane using positron annihilation lifetime spectroscopy
Author/Authors
Chia-Hao Lo، نويسنده , , Wei-Song Hung، نويسنده , , Manuel De Guzman، نويسنده , , Shu-Hsien Huang، نويسنده , , Chi-Lan Li، نويسنده , , Chien-Chieh Hu، نويسنده , , Yan-Ching Jean، نويسنده , , Kueir-Rarn Lee، نويسنده , , Juin-Yih Lai، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
7
From page
302
To page
308
Abstract
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.
Keywords
Polycarbonate membrane , Carbon dioxide permeability , Positron annihilation lifetime spectroscopy , Free-volume distribution , Plasticization
Journal title
Journal of Membrane Science
Serial Year
2010
Journal title
Journal of Membrane Science
Record number
1355477
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