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Rheological Model for Describing Viscometric Flows of Melts of Branched Polymers
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SYSNO ASEP 0459861 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Rheological Model for Describing Viscometric Flows of Melts of Branched Polymers Author(s) Merzlikina, D.A. (RU)
Pyshnograi, G. (RU)
Pivokonský, Radek (UH-J) SAI, ORCID, RID
Filip, Petr (UH-J) ORCID, RID, SAISource Title Journal of Engineering Physics and Thermophysics - ISSN 1062-0125
Roč. 89, č. 3 (2016), s. 652-659Number of pages 8 s. Publication form Print - P Language eng - English Country BY - Belarus Keywords rheology ; polymer melts ; mesoscopic approach ; rheological equation of state ; viscometric fl ows Subject RIV BK - Fluid Dynamics OECD category Fluids and plasma physics (including surface physics) Institutional support UH-J - RVO:67985874 UT WOS 000384842800016 EID SCOPUS 84974698952 DOI 10.1007/s10891-016-1423-7 Annotation The present paper considers the problem of constructing a rheological constitutive relation for melts of branched polymers with the use of a modified Vinogradov–Pokrovskii rheological model generalized to the case of several noninteracting models, each of which corresponds to the account in the stress tensor of the contribution of a particular polymer fraction and is characterized by its own relaxation time and viscosity. Since the number of model parameters markedly increases thereby, simple dependences of its parameters on the mode number are proposed. On the basis of the obtained model, the nonlinear nonstationary effects at simple shear and uniaxial tensor have been considered. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2017
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