Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5182556 | Polymer | 2013 | 7 Pages |
Abstract
CO2 sorption in molten poly(ε-caprolactone) (PCL) has been investigated by temporally resolved Raman line imaging, which is introduced here as a new technology for the direct measurement of gas mass fraction profiles inside polymers during transient sorption experiments. Molten PCL was exposed to pressurized carbon dioxide in an optically accessible pressure cell at 80 °C and pressures up to 7.1 MPa. During sorption, Raman spectra were acquired temporally and spatially resolved across the PCL drop, allowing the evaluation of the PCL/CO2 mutual diffusivity, of the CO2 solubility in PCL, and the determination of temporal evolution of mass fraction profiles of carbon dioxide inside PCL.
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Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Oliver Sven Knauer, Maria Giovanna Pastore Carbone, Andreas Braeuer, Ernesto Di Maio, Alfred Leipertz,