Conducting Polymers

The continuously growing interest in the study of PAni over the years is mainly because of it’s diverse, but unique properties of PANI, allowing its potential applications in various fields. Among all the conducting polymers, polyaniline is known for its (i) ease of synthesis (ii) environmental stability, and (iii) easy to dope. Aadarsh Innovations offers different types of conducting Polyaniline (Emeraldine Salt, doped with different dopants), Polyaniline EB (Emeraldine Base / Reduced state / Undoped state / Nonconducting state), custom synthesized Polyaniline, etc.

Electrically Conducting polymers such as Polyaniline, Polypyrrole, Polythiophene etc. have been studied extensively and a very intensive effort has been made in the recent decades for their anticorrosion behavior which is due to another interesting property shown by the material apart from conductivity that is the redox property of the material. The motivation for the development of the new anticorrosive coating system is due to the desires of the world community to replace chromium(VI)-containing corrosion resistant coating systems for iron and different alloys. Chromates, with its VI oxidation state compound, is the most effective universal corrosion inhibitor, but its use is banned in many countries across the world due to its hazardous and toxic effect on the environment and carcinogenic effect on humans. Coatings based on Conducting polymer polyaniline, polypyrrole, etc. The self-healing property of paint containing conducting polymer is subject of interest which may be due to the triggered release of dopant in the scratched area. The triggered release of dopant may be due to the difference in energy level in the paint and the exposed steel surface. . as pigments have been found to be promising replacements for Cr(VI)-containing coatings. Conducting polymers based “smart” coatings can prevent corrosion even in scratched areas where bare steel surface is exposed to the aggressive environment, which is known as self-healing property of conducting polymer.

Electromagnetic interference (EMI) occurs when sensitive electronic devices receive electromagnetic radiation emitted by other nearby electric or electronic devices such as microwaves, wireless computers, radios, and mobile phones. The affected devices may malfunction or fail as a result of electromagnetic interference. One of the examples of malfunctioning of devices due to EMI is the malfunctioning of pacemakers in the vicinity of certain electronic devices.

In the present day, we are living in the electronic jungle and the effects of electromagnetic interference are becoming more and more pronounced. This is due to the demand for high-speed electronic devices, miniaturization of electronic devices, more use of electronics in computers, communication equipment, cars, etc.

So there is a need to protect devices against electromagnetic interference (EMI). The effects of EMI can be reduced or diminished by positioning a shielding material between the source of the electromagnetic field and the sensitive device. For a material to act as EMI shielding, it should be electrically conductive. As EMI shielding is composed of reflection and absorption contributions, both the conductivity in the volume of the protecting material as well as the thickness of the material may be of importance. Conducting polymers which are also redox-active polymers, such as Polyaniline, polypyrrole, absorbs as well as reflect electromagnetic radiation.