Investigation on the diffusivity of partly fluorinated hydrocarbons in polymers
| Autor: | Lothar R. Oellrich, M. Mayele, Sven Neutzler |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
chemistry.chemical_classification
Materials science Magnetic Resonance Spectroscopy Hydrocarbons Fluorinated business.industry Polymers Biomedical Engineering Biophysics Refrigeration Polymer Thermal diffusivity Ozone depletion Magnetic Resonance Imaging law.invention Diffusion chemistry Diffusion process Chemical engineering law Air conditioning Gravimetric analysis Radiology Nuclear Medicine and imaging business Porosity Heat pump |
| Zdroj: | Magnetic resonance imaging. 21(3-4) |
| ISSN: | 0730-725X |
| Popis: | As partly fluorinated hydrocarbons (HFCs) are increasingly used in refrigeration, air conditioning and heat pump applications to replace formerly used chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons which are made responsible for stratospheric ozone depletion, the knowledge about the interactions of HFCs and potential sealing materials becomes of special interest due to the high polarity of the HFCs. In order to evaluate the suitability of a polymer as sealing material for certain HFCs as working fluids in process plants, information about the fluid diffusivity into and in the polymer has to be obtained. In contrast to conventional methods, such as gravimetric analysis and optical microscopy, magnetic resonance measurements allow contact-free in situ investigations not influencing the diffusion process or bear the necessity to destroy the sample. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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