SIMULATION MODELING OF THE STRUCTURE OF A CONDUCTIVE POLYMER USED IN PROTOTYPE
STUDIES OF BIOELECTRIC SIGNALS 

Dmitriy V. Tolkovich, adjuster radio-technician, Scientific and Production Enterprise "Radar mms" (lit. A, 37 Novoselkovskaya street, St. Petersburg, Russia), E-mail: pyby@inbox.ru 

Background. Current materials based on two-component polymers have been used in various industries for quite a long time. However, publications related to modeling the structure of such polymers do not often make it to the pages of printed publications. In the present work an attempt is made to propose and substantiate an equivalent model of the internal structure of conductive material with given properties, used as an equivalent of human skin skin for modeling and research of bioelectric signals. Materials and methods. To achieve the goal, the work used simulation methods, namely, mathematical and statistical modeling. Results. A model of two-component current-conducting polymer was developed and graphically realized in the process of simulation modeling. Polymer components are represented as separate cubes ("grains") of the same size. The grains are combined with each other into cubic cells consisting of 27 grains. The correlation of total number of conducting and insulating grains in the material is based on the ratio of initial volumes of components, as well as on the assumption of evaporation (in the process of polymerization) of a liquid component of the current-insulating component. Conclusions. When specifying the electrical characteristics for materials, both in general case and for individual grains, the proposed model allows to estimate the theoretical conductivity of material in DC circuits. In the future, the presented model can and should be adapted both to determine the conductivity of the developed material in AC circuits, and to determine the electrical conductivity of other two-component current-conducting polymers in DC and AC circuits. Also, the proposed model will make it possible to create two-component polymers with specified electrical characteristics, including applications in the field of registration and processing of bioelectric signals. 

model, conductive polymer, electrical conductivity, electrical resistance, graphite, rubber 

Tolkovich D.V. Simulation modeling of the structure of a conductive polymer used in prototype studies of bioelectric signals. Modeli, sistemy, seti v ekonomike, tekhnike, prirode i obshchestve = Models, systems, networks in economics, technology, nature and society. 2023;(2):144–153. (In Russ.). doi: 10.21685/2227-8486-2023-2-9