Polymer-Poly -cast Porous structure

The poly merblends of PI and polyvinylpyrrolidone (PVP) was used as precursor, assuming that the partially intermingled PVP phase in the continuous PI matrix will produce porous carbon structures by the decomposition of PVP during pyrolysis [62], PI was synthesized from benzophenone tetracarboxylic dianhydride (BTDA) and 4,4 -oxydianiline (ODA). Membranes were prepared by casting the polymer dope, either PI or PI/PVP blend, on a glass plate. The east polymer film was im-idized by stepwise heating up to 250°C and then carbonized at either 550 or 700°C. 

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