Brownian dynamics simulation of rheological properties of branched polymer based on molecular model

被引：0

作者：

Min Z. ^{[1
]}

Shen J. ^{[1
,2
]}

Shen C. ^{[2
]}

Cao W. ^{[2
]}

Liu C. ^{[2
]}

机构：

[1] Department of Materials Science and Technology, Luoyang Institute of Science and Technology, Luoyang

[2] National Engineering Research Center on Advanced Polymer Process Technology, Zhengzhou University, Zhengzhou

来源：

Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2017年 / 33卷 / 01期

关键词：

Branched polymer; Brownian dynamics; FENE bead-spring chain model; Molecular model; Rheology;

D O I：

10.16865/j.cnki.1000-7555.2017.01.020

中图分类号：

学科分类号：

摘要：

Finitely extensible nonlinear elastic (FENE) bead-spring chain model for dilute solutions of branched polymer molecules in Newtonian solvent was employed to describe the bead-bead interaction within a molecule. Brownian dynamics simulation was used to capture the steady state and transient rheological behavior of branched polymer. The simulations included examination of the effects of viscosity depending on length of the branching chain, spring parameter and shear rate. The flow situations and the rheological material functions were investigated. The results of shear flow simulation show that the shear viscosity increases with the increasing length of branch chain, and displays shear-thinning. Moreover, a large difference on the rheological response to different finite extensibility length was observed in this study. © 2017, Editorial Board of Polymer Materials Science & Engineering. All right reserved.

引用

页码：109 / 112and118

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