Blends of PANI and polymeric dopants

PANI has been doped with poly(amic acid) in order to obtain an all-polymer conducting material, by Angelo-poulos el a . [337]. Its structure has not been investigated, but the authors present x-ray diffraction results for cured specimens, in which polyimide formation has taken place at the expense of the carboxylic acid groups. The diffraction is structureless there is no indication that the elimination of the ionic interaction leads to phase separation of the polymers. 

Chen and Lee [338] have investigated PANI doped with poly(acrylic acid), by mixing appropriate volumes of equimolar solutions (based on repeat units) of PANI and of PAA in NMP. The x-ray diffraction patterns shows these polymer blends to be amorphous. 

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