Synthesis and characterisation of poly (aniline –co-chloroaniline) polymers and applications in automotive industries as paint coatings

Polyaniline (PANI)-polymer based paints have emerged as a promising solution for enhancing the durability and performance of automobile surface coatings. These paint coatings offer superior corrosion resistance, conductivity, and environmental stability, making it an ideal. Here novel copolymers of dodecylbenzenesulfonic acid aided poly (aniline-co-m-chloroaniline) nanocomposites of various compositions were prepared by oxidative method in micellar solution. The nanocomposites were analyzed by using UV-Vis and FT-IR spectroscopic methods. The crystalline nature of the polymer was evidenced through XRD patterns. SEM revealed the presence of particles with spherical morphology 100 nm in diameter. The electrical activity of the doped polymer was found to be content increasing from 3:1 to 3:3 x 10-2 S/cm to 5.64 x 10-7 S/cm with chloroaniline. These copolymers are added as additives in manufacturing of paint. These novel paints offer multiple protective mechanisms, including barrier protection, passivation, inhibition of cathodic and anodic reactions, and electrochemical stabilization. These mechanisms work synergistically to prevent the penetration of corrosive agents and redistribute electrochemical activity across the metal surface, thereby reducing the rate of corrosion. In addition to corrosion resistance, these paints also provide anti-static properties contributing to the overall functionality and longevity of automotive components.