scholarly journals Numerical study of a slip-link model for polymer melts and nanocomposites

2013 ◽  
Vol 138 (19) ◽  
pp. 194902 ◽  
Author(s):  
Diego Del Biondo ◽  
Elian M. Masnada ◽  
Samy Merabia ◽  
Marc Couty ◽  
Jean-Louis Barrat
Keyword(s):  
Polymer Melts ◽  
Numerical Study ◽  
Link Model

scholarly journals Numerical Investigation of the Effect of Viscoelasticity on Drop Retraction and the Evaluation of Interfacial Tension between Polymer Melts

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Lin Deng ◽  
Yun Zhang ◽  
Shaofei Jiang ◽  
Jiquan Li ◽  
Huamin Zhou
Keyword(s):  
Kinetic Theory ◽  
Interfacial Tension ◽  
Lattice Boltzmann ◽  
Present Method ◽  
Polymer Melts ◽  
Numerical Study ◽  
True Value ◽  
Novel Method ◽  
The Impact ◽  
Polymer Viscoelasticity

The purpose of this paper is twofold. The first is to numerically investigate and reveal the effect of polymer viscoelasticity on the retraction of a deformed drop using the lattice Boltzmann (LB) method and polymer kinetic theory. More importantly, the second is to propose a novel method to evaluate the interfacial tension between polymer melts based on the numerical study. Compared with the conventional deformed drop retraction method (DDRM), the present method is designed to greatly reduce the impact of polymer viscoelasticity on measuring interfacial tension. To verify, the interfacial tension between molten PP and POE is evaluated using the proposed method and obviously closer result to the true value is shown.

A slip-link model for rheology of entangled polymer melts with crystallization

2020 ◽  
Vol 64 (1) ◽  
pp. 213-222 ◽  
Author(s):  
Marat Andreev ◽  
Gregory C. Rutledge
Keyword(s):  
Polymer Melts ◽  
Entangled Polymer ◽  
Link Model ◽  
Entangled Polymer Melts

Fast Slip Link Model for Bidisperse Linear Polymer Melts

2019 ◽  
Vol 52 (8) ◽  
pp. 3092-3103 ◽  
Author(s):  
Sachin Shanbhag
Keyword(s):  
Polymer Melts ◽  
Linear Polymer ◽  
Link Model

scholarly journals Efficient Determination of Slip-Link Parameters from Broadly Polydisperse Linear Melts

Polymers ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 908 ◽  
Author(s):  
Néstor Valadez-Pérez ◽  
Konstantin Taletskiy ◽  
Jay Schieber ◽  
Maksim Shivokhin
Keyword(s):  
Graphics Processing Units ◽  
Polymer Melts ◽  
Coarse Grained ◽  
Detailed Model ◽  
Small Amplitude Oscillatory Shear ◽  
Flexible Polymer ◽  
Reptation Model ◽  
Terminal Zone ◽  
Double Reptation ◽  
Link Model

We investigate the ability of a coarse-grained slip-link model and a simple double reptation model to describe the linear rheology of polydisperse linear polymer melts. Our slip-link model is a well-defined mathematical object that can describe the equilibrium dynamics and non-linear rheology of flexible polymer melts with arbitrary polydispersity and architecture with a minimum of inputs: the molecular weight of a Kuhn step, the entanglement activity, and Kuhn step friction. However, this detailed model is computationally expensive, so we also examine predictions of the cheaper double reptation model, which is restricted to only linear rheology near the terminal zone. We report the storage and loss moduli for polydisperse polymer melts and compare with experimental measurements from small amplitude oscillatory shear. We examine three chemistries: polybutadiene, polypropylene and polyethylene. We also use a simple double reptation model to estimate parameters for the slip-link model and examine under which circumstances this simplified model works. The computational implementation of the slip-link model is accelerated with the help of graphics processing units, which allow us to simulate in parallel large ensembles made of up to 50,000 chains. We show that our simulation can predict the dynamic moduli for highly entangled polymer melts over nine decades of frequency. Although the double reptation model performs well only near the terminal zone, it does provide a convenient and inexpensive way to estimate the entanglement parameter for the slip-link model from polydisperse data.

Predictions of the linear rheology of polydisperse, entangled linear polymer melts by using the discrete slip-link model

2018 ◽  
Vol 62 (6) ◽  
pp. 1331-1338 ◽  
Author(s):  
Konstantin Taletskiy ◽  
Theo A. Tervoort ◽  
Jay D. Schieber
Keyword(s):  
Polymer Melts ◽  
Linear Polymer ◽  
Link Model

Numerical study of the low-frequency atomic dynamics in a Lennard-Jones glass

1998 ◽  
Vol 77 (2) ◽  
pp. 473-484 ◽  
Author(s):  
M. Sampoli, P. Benassi, R. Dell'Anna,
Keyword(s):  
Numerical Study ◽  
Low Frequency ◽  
Lennard Jones
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