Polyaniline
Conductive Polymer for Anti-Corrosion Coatings and Sensors
Polyaniline (PANI) is a versatile, intrinsically conductive polymer recognized for its unique combination of electrical conductivity, environmental stability, and tunable chemical structure. It is a proven solution in anti-corrosion coatings, electrochemical sensors, and electromagnetic shielding, offering sustainable and high-performance alternatives.
PANI-based coatings form a protective, passivating layer that inhibits metal oxidation, reducing corrosion rates by over 90% in industrial trials. Its redox activity facilitates stable oxide layer formation, extending metal service life in harsh environments. Depending on its oxidation state, PANI exhibits conductivity from 10⁻⁴ to 10² S/cm, allowing engineers to optimize electrical pathways.
Large-scale tests in oil & gas, marine infrastructure, and aerospace have validated PANI’s long-term corrosion resistance. In offshore pipelines, PANI-modified epoxy systems have shown up to 5x improved durability. PANI is compatible with diverse substrates and can be processed into paints, films, or nanocomposite formulations.
Due to its high sensitivity to pH, gases, and biological molecules, PANI is used in electrochemical sensors for detecting pollutants and biomedical markers. PANI coatings reduce the need for frequent repainting, lowering lifecycle costs and environmental impact, aligning with green chemistry principles.
Polyaniline - Material Applications
Pipeline Coatings
Reduces corrosion by 90%+.
Marine Protection
Durable coatings for ships & docks.
Aerospace Alloys
Protects aircraft in harsh conditions.
Electrochemical Sensors
Detects gases & pollutants precisely.
Biomedical Devices
Monitors pH & biological signals.
Oil & Gas Infrastructure
Extends pipeline service life.
EMI Shielding Films
Reduces interference in electronics.
Smart Paints
Self-reporting coatings with sensing abilities.
Energy Storage
Conductive elements in supercapacitors.
Frequently Asked Questions(FAQs):-
A: Polyaniline is a conductive polymer used in electronics, energy storage, sensors, and coatings due to its tunability and stability.
A: PANI is available as powder, dispersion, or thin films, suitable for research, industrial, and commercial applications.
A: Yes, its high conductivity and surface area make it excellent for electrodes in supercapacitors and batteries.
A: Yes, PANI is resistant to corrosion and stable under ambient conditions, making it ideal for long-lasting applications.
A: Absolutely. PANI is soluble in acidic solutions and can be coated, printed, or cast into thin films.