Journal article
Direct measurement of gas solubility and diffusivity in poly(vinylidene fluoride) with a high-pressure microbalance
Center for Phase Equilibria and Separation Processes, Department of Chemical and Biochemical Engineering, Technical University of Denmark1
Department of Chemical and Biochemical Engineering, Technical University of Denmark2
Center for Energy Resources Engineering, Centers, Technical University of Denmark3
We present solubility and diffusion data for the gases methane and carbon dioxide in the polymer poly(vinylidene fluoride). The polymer was cut from extruded piping intended for use in offshore oil and gas applications. Measurements were carried out using a purpose-built high-pressure microbalance. These properties were determined in the temperature range 80-120degreesC and in the pressure range 50-150bar for methane and 20-40bar for carbon dioxide.
In general, good agreement was obtained for similar measurements reported in the literature. Solubility follows a Henry's law (linear) dependence with pressure. Diffusion coefficients for each of the gases in the polymer were also measured using the balance. Activation energies for diffusion and heats of solution for the two gases in the polymer were also determined. (C) 2004 Elsevier Ltd.
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| Language: | English |
|---|---|
| Year: | 2005 |
| Pages: | 341-348 |
| ISSN: | 18731945 and 00143057 |
| Types: | Journal article |
| DOI: | 10.1016/j.europolymj.2004.09.020 |
| ORCIDs: | von Solms, Nicolas , Andersen, Simon Ivar and Stenby, Erling Halfdan |
