Tailored Additives to Improve the Electret Performance of Polycarbonates | Zendy

Erhard Dominik P. | Zendy; Lovera Deliani | Zendy; Jenninger Werner | Zendy; Wagner Joachim | Zendy; Altstädt Volker | Zendy; Schmidt HansWerner | Zendy

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Tailored Additives to Improve the Electret Performance of Polycarbonates

Author(s) -

Erhard Dominik P.,

Lovera Deliani,

Jenninger Werner,

Wagner Joachim,

Altstädt Volker,

Schmidt HansWerner

Publication year - 2010

Publication title -

macromolecular chemistry and physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.57

H-Index - 112

eISSN - 1521-3935

pISSN - 1022-1352

DOI - 10.1002/macp.201000171

Subject(s) - electret , materials science , dielectric , context (archaeology) , isothermal process , charge (physics) , composite material , corona (planetary geology) , polymer chemistry , chemical engineering , optoelectronics , thermodynamics , physics , engineering , paleontology , quantum mechanics , astrobiology , venus , biology

An electret is a dielectric material exhibiting a quasi‐permanent electric charge. The aim of this work is to give access to PC electret materials with a distinctly improved electret performance. In this context, the charge storage capabilities of corona charged films of several PC grades were investigated by isothermal potential decay measurements at 90 °C. The most promising PC grade was further improved by a new class of bisimide additives. The best additive at the most efficient concentration in combination with a physical aging step yielded excellent PC electrets maintaining almost their complete applied charge even at 90 °C.

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