Physical foaming of fluorinated ethylene-propylene (FEP) copolymers in supercritical carbon dioxide: single-film fluoropolymer piezoelectrets

Voronina O, Wegener M, Wirges W, Gerhard R, Zirkel L, Münstedt H (2008)

Publication Type: Journal article

Publication year: 2008

Journal

Applied Physics A: Materials Science and Processing Springer Verlag (Germany)

Book Volume: 90

Pages Range: 615-618

Journal Issue: 4

DOI: 10.1007/s00339-007-4371-4

Abstract

Cellular polymer foams with significant piezoelectric activity were prepared from fluorinated ethylene-propylene (FEP) copolymers. The required void structure is obtained by saturation of FEP films with supercritical carbon dioxide and a subsequent heat treatment for controlled inflation. After bipolar electric charging of the voids and evaporation of electrodes, the FEP films show piezoelectric d33 coefficients up to 50 pC N. The present physical foaming process generates cellular efficients up to 50 pC/N. The present physical foaming process generates cellular fluoropolymer piezoelectret films with usually only one single void across the film thickness.

Authors with CRIS profile

Helmut Münstedt Technische Fakultät

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials (EAM)

Involved external institutions

Universität Potsdam DE Germany (DE)

How to cite

APA:

Voronina, O., Wegener, M., Wirges, W., Gerhard, R., Zirkel, L., & Münstedt, H. (2008). Physical foaming of fluorinated ethylene-propylene (FEP) copolymers in supercritical carbon dioxide: single-film fluoropolymer piezoelectrets. Applied Physics A: Materials Science and Processing, 90(4), 615-618. https://doi.org/10.1007/s00339-007-4371-4

MLA:

Voronina, O., et al. "Physical foaming of fluorinated ethylene-propylene (FEP) copolymers in supercritical carbon dioxide: single-film fluoropolymer piezoelectrets." Applied Physics A: Materials Science and Processing 90.4 (2008): 615-618.

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