Polybenzoxazines (PBOs) are phenolic resin type polymers with high strength and high temperature stability comparable to that of polyimides. Here PBO aerogels were synthesized from bisphenol A, paraformaldehyde, aniline and DMSO. Resultant aerogels are macroporous materials and were characterized chemically (13C NMR), nanoscopically (SAXS, SEM) and macroscopically (uniaxial compression, thermal conductivity). Pyrolysis at 800 oC yields robust, mainly microporous carbon aerogels, while further pyrolysis at 2300 oC yields highly conducting graphite aerogels (50 mho cm-1) with a rod-like microstructure. The latter are evaluated for lithium intercalation.

Polybenzoxazine aerogels: Synthesis, characterization, and conversion to carbon and graphite aerogels

245th National Meeting (2013)

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