Behrendt, N. and Mohmeyer, N. and Hillenbrand, J. and Klaiber, M. and Zhang, X. and Sessler, Gerhard M. and Schmidt, H.-W. and Altstädt, V. (2006):
Charge storage behavior of isotropic and biaxially-oriented polypropylene films containing alpha- and beta-nucleating agents.
In: Journal of Applied Polymer science, 99 (3), pp. 650-658. Wiley-Blackwell, ISSN 1097-4628,
[Article]
Abstract
A study on the influence of the crystal mod- ification ( ␣ and  ) of isotactic polypropylene (i-PP) films on the resulting electret properties is presented. Two commer- cial nucleating agents, sodium 2,2⬘-methylene-bis(4,6-di-tert- butylphenyl)-phosphate (NA11) and N,N⬘-dicyclo-hexyl- 2,6-naphthalene-dicarbox-amide (NU100), were employed in this investigation. Isothermal charge decay was measured at 90°C. In hot pressed isotropic polypropylene films, no significant differences in the charge storage properties were observed for ␣ - and  -nucleated specimens. In addition, the article presents the influence of the nucleating agents at different concentrations on the PP-film morphology of bi- axially stretched films with respect to electret features. It was possible to prepare elongated cavities with the virtually insoluble NA11 additive during stretching, even at concen- trations below 0.3 wt %. These films displayed slightly im- proved electret properties in comparison to stretched neat PP films due to generated cavities acting as barriers for the drift of charges. Various draw ratios were also studied for i-PP films with 0.15 wt % NA11.
| Item Type: | Article |
|---|---|
| Erschienen: | 2006 |
| Creators: | Behrendt, N. and Mohmeyer, N. and Hillenbrand, J. and Klaiber, M. and Zhang, X. and Sessler, Gerhard M. and Schmidt, H.-W. and Altstädt, V. |
| Title: | Charge storage behavior of isotropic and biaxially-oriented polypropylene films containing alpha- and beta-nucleating agents |
| Language: | English |
| Abstract: | A study on the influence of the crystal mod- ification ( ␣ and  ) of isotactic polypropylene (i-PP) films on the resulting electret properties is presented. Two commer- cial nucleating agents, sodium 2,2⬘-methylene-bis(4,6-di-tert- butylphenyl)-phosphate (NA11) and N,N⬘-dicyclo-hexyl- 2,6-naphthalene-dicarbox-amide (NU100), were employed in this investigation. Isothermal charge decay was measured at 90°C. In hot pressed isotropic polypropylene films, no significant differences in the charge storage properties were observed for ␣ - and  -nucleated specimens. In addition, the article presents the influence of the nucleating agents at different concentrations on the PP-film morphology of bi- axially stretched films with respect to electret features. It was possible to prepare elongated cavities with the virtually insoluble NA11 additive during stretching, even at concen- trations below 0.3 wt %. These films displayed slightly im- proved electret properties in comparison to stretched neat PP films due to generated cavities acting as barriers for the drift of charges. Various draw ratios were also studied for i-PP films with 0.15 wt % NA11. |
| Journal or Publication Title: | Journal of Applied Polymer science |
| Journal volume: | 99 |
| Number: | 3 |
| Publisher: | Wiley-Blackwell |
| Divisions: | 18 Department of Electrical Engineering and Information Technology |
| Date Deposited: | 20 Nov 2008 08:26 |
| Official URL: | https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.22502 |
| License: | [undefiniert] |
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