Statistical Approach to Description of Percolation Processes in Composite Filaments Filled with Anisotropic Nonagglomerating Carbon Nanofiller

Meshcheryakova, G. P.; Tsobkallo, E. S.; Vol’nova, D. V.

doi:10.1007/s10692-021-10240-y

Cited by 4 publications

(3 citation statements)

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“…Areas the specific volume resistance sharp change can be attributed to the course of percolation processes, which we will pay special attention to. In our works [11,13,14], the Boltzmann function ( 1) was used to model the concentration dependence of the specific volume electrical resistance in composite film filaments, which made it possible to describe the percolation process quite accurately.…”

Section: Resultsmentioning

confidence: 99%

“…The appearance of a plateau means that an increase in the filler concentration in this range may lead to the emergence of new conductive chains, but these chains may be longer, which is the reason for the insignificant contribution of these newly formed clusters to the reduction of resistance. Furthermore, an increase in the concentration in this range of values may lead to a certain reduction (optimization) of the lengths of the already existing conducting circuits-clusters [11,15,16].…”

Section: Discussionmentioning

confidence: 99%

“…Nanoscale manipulation results in new functionalities for intelligent textiles, including self-cleaning, sensing, actuating, and communicating [6,7]. The variety of fiber-forming matrices and conductive fillers used, the complexity and nonlinearity of the processes occurring during the formation of conductive clusters have led to the emergence of a scientific direction in the field of material science of chemical fibers, which studies the electrical properties of such composites [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

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Modeling of the Electrotransport Process in PP-Based and PLA-Based Composite Fibers Filled with Carbon Nanofibers

2022

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Polypropylene and polylactide-based composite fibers have been produced by a melt technology. Long vapor-grown carbon fibers (CNFs) have been used as electrical conductivity fillers. It is clearly shown by experimental methods that the CNFs are evenly distributed in the polymer matrix, orienting themselves along the direction of fiber extrusion and retaining their initial dimensions. It is shown that for composites fibers based on crystallizing (polypropylene) and amorphous (polylactide acid) polymer matrix, the dependence of electrical resistance on the filler concentration is percolation character and can be described as a double Boltzmann function. Four sections are identified on the dependences of the electrical resistance on the filler concentration for composite fibers, and the reasons for this character of this dependence on the formation of electrically conductive circuits are analyzed. Investigated in this work are the PP-based and PLA-based composites filled with carbon nanofibers that can be used as antistatic, shielding materials, or as sensors.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%