Local orientational mobility in regular hyperbranched polymers
MARKELOV, Denis A.
St Petersburg State University [SPbU]
National Research University of Information Technologies, Mechanics and Optics [St. Petersburg] [ITMO]
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St Petersburg State University [SPbU]
National Research University of Information Technologies, Mechanics and Optics [St. Petersburg] [ITMO]
MARKELOV, Denis A.
St Petersburg State University [SPbU]
National Research University of Information Technologies, Mechanics and Optics [St. Petersburg] [ITMO]
< Réduire
St Petersburg State University [SPbU]
National Research University of Information Technologies, Mechanics and Optics [St. Petersburg] [ITMO]
Langue
en
Article de revue
Ce document a été publié dans
Physical Review E. 2016-07-25, vol. 94, n° 1, p. 012502 (1-9)
American Physical Society (APS)
Résumé en anglais
We study the dynamics of local bond orientation in regular hyperbranched polymers modeled by Vicsek fractals. The local dynamics is investigated through the temporal autocorrelation functions of single bonds and the ...Lire la suite >
We study the dynamics of local bond orientation in regular hyperbranched polymers modeled by Vicsek fractals. The local dynamics is investigated through the temporal autocorrelation functions of single bonds and the corresponding relaxation forms of the complex dielectric susceptibility. We show that the dynamic behavior of single segments depends on their remoteness from the periphery rather than on the size of the whole macromolecule. Remarkably, the dynamics of the core segments (which are most remote from the periphery) shows a scaling behavior that differs from the dynamics obtained after structural average. We analyze the most relevant processes of single segment motion and provide an analytic approximation for the corresponding relaxation times. Furthermore, we describe an iterative method to calculate the orientational dynamics in the case of very large macromolecular sizes.< Réduire
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