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Introduction
Conductive polymers are a group of electronic materials that have been widely used due to unique electrical and optical properties in solid-state devices as flexible electrodes such as organic solar cells, printed electronic circuits, organic light-emitting diodes, actuators, electrochromic, supercapacitors, chemical sensors, biosensors and flexible transparent displays [1–4]. The combination of this type of material can improve the performance of various components, including the optical, mechanical, electrical and magnetic properties. The most popular properties of polymers are strength, lightweight, neutrality and insulation. The electrical conductivity is due to the structural special form of polymers that allow electrons to be transported along the polymer chain when they are in a specific oxidation state. Such lightweight polymers can replace conductors in communication systems and the development of optoelectronic and electronic devices such as diodes, etc. [5,6].
Today, conductive polymers of polyaniline (PANI), polystyrene (PS), polypyrrole (PPY) and polythiophene (PT) have attracted the most attention. These polymers, while similar to each other, have completely different properties. These polymers are very different in the amount of conductivity, heat transport and air sensitivity, solubility, ease of moulding, and processability, depending on the type of monomer and their synthesis method [7]. Polyaniline is one of the most important new conductive polymers that have optical, electronic and mechanical properties of conductors and has processability compared to classical polymers. Polyaniline is an organic metal, easily made from inexpensive monomers such as aniline by simple chemical methods. A thin film of polyaniline with high abrasion resistance and conductivity can be used in smart windows, electrochromic displays, electromagnetic wave protectors, etc. Polyaniline composites with polymers such as polyester, nylons, PVC, etc. by taking advantage of the mechanical properties of the classical polymer (insulation) as a matrix, electrical properties, oxidation, and reduction of redox polyoxyl can open a new path in the development of applications [1,2].
Polyethylene terephthalate (PET) due to its excellent mechanical and chemically stable properties is one of the most important common polyester resins. Also, since PET is known to have low permeability in gases and solvents, it is a potential barrier against corrosion and its properties depend on molecular weight, molecular structure, crystallization and the presence of impurities [8]. Polymer coatings are widely used as a substrate for transparent and flexible...