MODELS AND METHODS IN MODERN SCIENCE
International scientific-online conference
128
ELECTRICALLY CONDUCTIVE POLYMERS: POLYPYRROLE.
METHODS OF OBTAINING AND PROPERTIES
Poziljonova Gulshoda Jakhongir kizi
1
st
year basic doctoral student of the National University
of Uzbekistan named after Mirzo Ulugbek
https://doi.org/10.5281/zenodo.12150555
Abstract:
In this thesis, opinions are held about electrically conductive
polymers: Polypyrrole. Also, its methods and properties are explained.
Key words:
Electrical conductivity, Polypyrrole, polymer, supercapacitors,
electrodes, nanocomposites, biosensors, solution,
Introduction:
Conductive polymers are the basis of 21st century electronics. Nowadays,
the interest in such polymers is increasing. Conductive polymers have been of
great interest to researchers for more than 30 years due to their economic
importance, high stability, light weight, good processability, corrosion
resistance, and satisfactory electrical conductivity.
Simple representatives of such polymer classes include polyacetylene,
polypyrrole, polyaniline, polythiophene, polyparaphenylene and several of their
derivatives [1]. A large number of studies have been devoted to PPy and PANI
due to the fact that they can be obtained by relatively simple methods
(
electrochemical and chemical synthesis methods).
MODELS AND METHODS IN MODERN SCIENCE
International scientific-online conference
129
Figure 1. Synthesis methods.
Polypyrrole (PPy) is an organic polymer obtained by oxidative
polymerization of pyrrole. H(C4H2NH)nH is a solid with the formula.
Among conductive polymers, polypyrrole (PPy) is particularly promising
for commercial use due to its better environmental stability, easier synthesis,
and higher conductivity than many other conductive polymers. In addition, PPy
is known for its non-toxicity and biocompatibility [2, 3], and it has been used in a
wide range of fields e.g., gas sensors, drugs, supercapacitors, electrodes,
nanocomposites, biosensors, protective clothing, anti-corrosion coatings,
actuators and adsorbents are used.
Polypyrrole can easily be prepared in solution. It exhibits unique electrical
conductivity, good stability at room temperature, and unique oxidation-
reduction (redox) properties. PPy can be synthesized based on oxidative
polymerization of Py monomer in organic solvents (acetonitrile and propylene
carbonate) and aqueous medium (water and acid solution) in the presence of
iron (III) chloride (FeCl3) ammonium persulfate (APS) or other oxidizing agents.
[4] Oxidative polymerization is considered to be the oldest polymerization
reaction used to obtain p-conjugated polymers. Oxidation polymerization can be
carried out chemically, electrochemically or by ultrasonic waves. The most
commonly used synthesis methods for PPy are chemical and electrochemical
polymerization
References:
1. Upadhyay A., Karpagam S. Movement of new direction from conjugated
polymer to semiconductor composite polymer nanofiber //Reviews in Chemical
Engineering. – 2019. – Т. 35. – №. 3. – С. 351-375.
2. Rahaman M. et al. Chemical and electrochemical synthesis of polyPyrrole
using carrageenan as a dopant: PolyPyrrole/multi-walled carbon nanotube
nanocomposites //Polymers. – 2018. – Т. 10. – №. 6. – С. 632.
3. Chavoshizadeh S., Pirsa S., Mohtarami F. Conducting/smart color film based on
wheat gluten/chlorophyll/polyPyrrole nanocomposite //Food Packaging and
Shelf Life. – 2020. – Т. 24. – С. 100501.
4.Posudievsky O. Y., Kozarenko O. A. Effect of monomer/oxidant mole ratio on
polymerization mechanism, conductivity and spectral characteristics of
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