Relaxation dynamics of generalized scale-free polymer networks

Scientific Reports
A JurjiuMircea Galiceanu

Abstract

We focus on treelike generalized scale-free polymer networks, whose geometries depend on a parameter, γ, that controls their connectivity and on two modularity parameters: the minimum allowed degree, K min , and the maximum allowed degree, K max . We monitor the influence of these parameters on the static and dynamic properties of the achieved generalized scale-free polymer networks. The relaxation dynamics is studied in the framework of generalized Gaussian structures model by employing the Rouse-type approach. The dynamical quantities on which we focus are the average monomer displacement under external forces and the mechanical relaxation moduli (storage and loss modulus), while for the static and structure properties of these networks we concentrate on the eigenvalue spectrum, diameter, and degree correlations. Depending on the values of network's parameters we were able to switch between distinct hyperbranched structures: networks with more linearlike segments or with a predominant star or dendrimerlike topology. We have observed a stronger influence on K min than on K max . In the intermediate time (frequency) domain, all physical quantities obey power-laws for polymer networks with γ = 2.5 and K min  = 2 and we prove add...Continue Reading

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Citations

Apr 15, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·V BlavatskaYu Holovatch
Apr 10, 2019·Polymers·Aurel Jurjiu, Mircea Galiceanu
Oct 3, 2019·Physical Review. E·Edieliton S OliveiraMircea Galiceanu
Dec 18, 2019·Scientific Reports·Andre M C Souza, Roberto F S Andrade

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