Porous polytetrafluoroethylene (PTFE) electret films : porosity and time dependent charging behaviour of the free surface
- Electrically charged porous polytetrafluoroethylene (PTFE) films are often discussed as active layers for electromechanical transducers. Here, the electric charging behavior of open-porous PTFE films with different porosities is investigated. Optimized electric charging of porous PTFE films is determined by variation of charging parameters such as electric fields and charging times. Maximum surface potentials are depending on the porosity of the PTFE films. Suitable charging leads to high surface potentials observed on non-stretched or slightly stretched porous PTFE films. Further increase of charging fields yields decreasing values of the surface potential accompanied with an increase of conductivity.
| Author details: | Michael WegenerORCiDGND, Werner WirgesORCiD, Brigitte TierschORCiD |
|---|---|
| URL: | http://www.springerlink.com/content/601u86x365560515/ |
| DOI: | https://doi.org/10.1007/s10934-006-9015-0 |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2006 |
| Publication year: | 2006 |
| Release date: | 2017/03/24 |
| Source: | Journal of Porous Materials. - 14 (2007), 1, S. 111 - 118 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
| Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik |
