Abstract:Highly porous rigid polybenzoxazole (PBO) network films were prepared using a precursor‐mediated fabrication method. The obtained PBO network films possessed high porosities of ~40%, as calculated from their apparent densities. In addition, the 5%‐weight‐loss temperatures of the films were ≥570°C under nitrogen atmosphere, demonstrating an excellent thermal stability. The electrical conductivities of the obtained PBO network films and phosphoric‐acid‐doped PBO network films were also evaluated. In addition, PB… Show more
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