Dielectric Relaxations of Some Pyrrones
Sek, D (Institute of Polymer Chemistry, Polish Academy of Sciences, Zabrze, Poland) ; Schab-Balcerzak, E (Institute of Polymer Chemistry, Polish Academy of Sciences, Zabrze, Poland) ; Mazurek, B (Wroclaw University of Technology, Poland) ; Motyl, E (Wroclaw University of Technology, Poland) ; Adamowska, M (Electrotechnical Institute, Wroclaw, Poland)
Abstract: The properties of a series of new synthesized poly(imidazopyrolones) shortly named here as pyrrones, are presented. The pyrrones show excellent thermal properties as it was evaluated by thermogravimetric analysis and small weight loss below 300 °C. The electrical properties are highly affected by fiexibilizing groups X such as amide, ester or other between ladder segments. The frequency dependence of electrical permitivities and conductivity thermograms are presented The pyrrones containing ester groups, show significantly lower conductivities in comparison to those containing amide or other groups.
Keyword(s): thermostable polymers ; semiladder polymers ; dielectric properties
Note: APTADM 2001 Int. Conference on Advances in Processing, Testing and Application of Dielectric Materials, 2001
Fulltext : http://zet10.ipee.pwr.wroc.pl/record/211/files/
Cited by: try citation search for ENY-ARTICLE-2008-164
Record created 2008-09-20, last modified 2008-09-21
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