Synthesis of DBSA-doped Polyaniline by Emulsion Polymerization and PANI/PLA Electrospun Fiber Membrane Conductivity

AbstractPolyaniline (PANI) has gained interest due to its reasonably good conductivity, stability, easy preparation, affordability, and redox properties. Aniline monomers, emulsifiers, and dopant DBSA are used for emulsion polymerization in water, using various oxidants. The DBSA-doped polyaniline was extracted via a chloroform solution, and PLA was added directly in the emulsion to form the DBSA-PANI/PLA composite electrospinning solution. The DBSA-PANI/PLA composite nanofiber membrane was prepared via electrospinning. FeCl3, K2Cr2O7, and ammonium persulfate were used as oxidants in the emulsion polymerization process. The Infrared spectra showed the full characteristic peaks of polyaniline when ammonium persulfate was used as an oxidant. The transmission rate of the characteristic peak became smaller when the ratio of ammonium persulfate/aniline monomer increased from 0.5 to 1, demonstrating the polyaniline content increased. The electrospun nanofibers that were prepared were spindle-shaped fibers and t...