Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Letter
Highly Thermally Resistant and Flexible Polyimide Aerogels Containing Rigid-rod Biphenyl, Benzimidazole, and Triphenylpyridine Moieties: Synthesis and Characterization
Dengxiong ShenJingang LiuHaixia YangShiyong Yang
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2013 Volume 42 Issue 12 Pages 1545-1547

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Abstract

Polyimide (PI) aerogels containing rigid-rod biphenyl, benzimidazole, and triphenylpyridine moieties have been developed. The flexible PI aerogels exhibited excellent thermal stability with glass-transition temperatures (Tg) higher than 350 °C. Initial porous structures in the PI aerogels could be maintained even after isothermal aging at 300 °C for 24 h in nitrogen. Furthermore, the weight losses of the aerogels after isothermal aging at 300 and 400 °C for 24 h in nitrogen were below 5 and 10 wt %, respectively.

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© 2013 The Chemical Society of Japan
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