Universal shape characteristics for the mesoscopic star-shaped polymer via dissipative particle dynamics simulations. (30th April 2018)

• Record Type: Journal Article
• Authors: Kalyuzhnyi, O; Ilnytskyi, J M; Holovatch, Yu; von Ferber, C
• Is Part Of: Journal of physics. Volume 30:Number 21(2018)
• Publication Date: 2018-04-30
• Subjects: star-like polymer -- θ-solvent -- dissipative particle dynamics; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aabc16
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: In this paper we study the shape characteristics of star-like polymers in various solvent quality using a mesoscopic level of modeling. The dissipative particle dynamics simulations are performed for the homogeneous and four different heterogeneous star polymers with the same molecular weight. We analyse the gyration radius and asphericity at the poor, good and θ -solvent regimes. Detailed explanation based on interplay between enthalpic and entropic contributions to the free energy and analyses on of the asphericity of individual branches are provided to explain the increase of the apsphericity in θ -solvent regime.