Polyaniline as pH-sensitive component in plasticized PVC membranes

The pH and redox sensitivity of electrically conducting polymer films consisting of a mixture of polyaniline (PANI) and plasticized poly(vinyl chloride) (PVC) have been studied with potentiometry, UV–vis spectroscopy and energy dispersive X-ray analysis (EDXA). It is well known that PANI is highly H+-selective and can easily be dissolved in many organic solvents with functionalized organic acids. PANI is therefore very suitable to be used as a...