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Swelling and impregnation of polystyrene using supercritical carbon dioxide
- Source :
- The Journal of Supercritical Fluids. 26:263-273
- Publication Year :
- 2003
- Publisher :
- Elsevier BV, 2003.
-
Abstract
- Swelling of polystyrene (PS) in supercritical carbon dioxide was studied in situ. Experiments were carried out in a high-pressure cell furnished with an optical channel. This allowed to measure the dynamics of diffusion front propagation in the polymer samples during the swelling process by the use of an optical microscope supplied with a digital video camera. The measurements of this dynamics provided information about diffusion coefficients of CO 2 molecules in PS. Diffusion coefficients and equilibrium sorption degrees of the PS samples were also calculated by the use of a gravimetric method. The data were compared with the results of in situ technique. Impregnation of PS films wish ethyl-2-cyano-3(4′-dimethylaminophenyl)acrylate as a model substance for UV-filters and electrographic materials was carried out.
- Subjects :
- chemistry.chemical_classification
Materials science
Supercritical carbon dioxide
General Chemical Engineering
Diffusion
Analytical chemistry
Sorption
Polymer
Condensed Matter Physics
law.invention
chemistry.chemical_compound
chemistry
Optical microscope
law
medicine
Gravimetric analysis
Polystyrene
Physical and Theoretical Chemistry
Swelling
medicine.symptom
Subjects
Details
- ISSN :
- 08968446
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- The Journal of Supercritical Fluids
- Accession number :
- edsair.doi...........693b8dc1f07d5851cdf6eb274d8515ee