| Autor: |
Ryoichi Susuki, Wen-Liang Liu, Jen-Luan Chen, Dar-Ming Chiang |
| Rok vydání: |
2006 |
| Předmět: |
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| Zdroj: |
2005 12th International Symposium on Electrets. |
| DOI: |
10.1109/ise.2005.1612312 |
| Popis: |
The electret properties of nano and/or meso porous fluoropolymer mats and films, fabricated by impregnation and super-critical fluids (SCFs) method and charged by the corona method at ambient environment, are investigated. Positron annihilation lifetime spectroscopy (PALS) and small angle X-ray scattering (SAXS) are applied to study the charge characteristics of a free volume of electret polymeric materials. The topography and surface charges of electret polymeric materials are studied by electric field microscopy (EFM). The experimental results reveal that the nanopores and/or mesopores of the electret polymeric materials influence the retention and stability of charge. Aged surface charges were enhanced by more than ten times from comparisons with and without fluoro-polymer impregnation of the PP mat. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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