Multifractal signatures of light-driven self-organization in acrylated epoxidized soybean oil polymers
Kiv A.E. Soloviev V.N. Bielinskyi A.O. Slusarenko M.A. Kavetskyy T.S. Šauša O. Švajdlenková H. Donchev I.I. Hoivanovych N.K. Pankiv L.I. Nykolaishyn O.V. Mushynska O.R. Zubrytska O.V. Tuzhykov A.V. Kushniyazova M.
2024National Academy of Sciences of Ukraine - Institute of Semiconductor Physics
Semiconductor Physics, Quantum Electronics and Optoelectronics
2024#27Issue 3366 - 377 pp.
Multifractal properties of acrylated epoxidized soybean oil with and without a photoinitiator have been investigated. Using multifractal detrended fluctuation analysis, the photopolymerization process is analyzed by varying illumination duration and intensity. The research is conducted in two stages: the results concerning temperature fluctuations of the entire photoirradiation process are initially presented followed by a sliding window procedure to monitor system complexity during light cycling. Various multifractal mea-sures including the generalized Hurst exponent h(q), the multifractal Rényi exponent τ(q), the generalized fractal dimensions D(q) with the left and right side curvature (ΔDL, ΔDR), the multifractal singularity exponents α, the multifractal spectrum f (α), and the multifractal heat capacity C(q) with its integrated characteristic Careaare examined for both initial and shuffled series. The empirical results demonstrate that the moments of switching on and switching off photoirradiation are characterized by an instantaneous increase in the degree of multifractality of the system. It is hypothesized that the observed increase in multi-fractality at the light-switching-on/off stages is indicative of a quasi-phase transition, which may be associated with the transformation of orientational defects in the polymer network.
Acrylated epoxidized soybean oil , Multifractal detrended fluctuation analysis , Multifractality , Phase transition , Photopolymerization , Self-organization
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South Ukrainian National Pedagogical University named after K.D. Ushynsky, Odesa, 65020, Ukraine
Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
Kryvyi Rih State Pedagogical University, Kryvyi Rih, 50086, Ukraine
State University of Economics and Technology, Kryvyi Rih, 50005, Ukraine
Kyiv National Economic University named after Vadym Hetman, Kyiv, 03057, Ukraine
Drohobych Ivan Franko State Pedagogical University, Drohobych, 82100, Ukraine
Institute of Physics, Slovak Academy of Sciences, Bratislava, 84511, Slovakia
Department of Nuclear Chemistry, FNS, Comenius University, Bratislava, 84215, Slovakia
Polymer Institute, Slovak Academy of Sciences, Bratislava, 84541, Slovakia
Kazakh-British Technical University, Almaty, 050000, Kazakhstan
South Ukrainian National Pedagogical University named after K.D. Ushynsky
Ben-Gurion University of the Negev
Kryvyi Rih State Pedagogical University
State University of Economics and Technology
Kyiv National Economic University named after Vadym Hetman
Drohobych Ivan Franko State Pedagogical University
Institute of Physics
Department of Nuclear Chemistry
Polymer Institute
Kazakh-British Technical University
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