Abstract
Polyaniline (PANI) powder in its emeraldine salt form was blended with various concentrations of polyvinyl alcohol (PVA) to create semiconducting inks with desired fluid properties. These inks were coated on cellulose paper, and their resistive responses were tested under different vacuum pressures. Enhanced conductivity and reduced creep behavior were achieved by incorporating an O–H bond between the H of PANI and O of PVA, which stabilizes the polymer structure. This bonding minimizes electrical drift, improving the reliability of the synthesized inks for applications such as designing flexible circuits and fabricating thermoelectric generators. The strain field developed under vacuum is accountable for the observed variation in electrical properties. Due to the increase in strain field, the polaron hopping barrier increases, and as a result, the effective conductivity decreases with a decrease in pressure. These ‘use-and-throw’ sensors are economical, adaptable, and environmentally friendly, ideal for various disposable electronics and sensing applications.
Published Version
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