scholarly journals Simulation of Individual Polymer Chains and Polymer Solutions with Smoothed Dissipative Particle Dynamics

Fluids ◽  
2016 ◽  
Vol 1 (1) ◽  
pp. 7 ◽  
Author(s):  
Sergey Litvinov ◽  
Qingguang Xie ◽  
Xiangyu Hu ◽  
Nikolaus Adams ◽  
Marco Ellero
Keyword(s):  
Polymer Solutions ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
Polymer Chains ◽  
Individual Polymer

The influence of temperature and density on the microscopic structure and dynamics of long polymer chains: Molecular dynamics and dissipative particle dynamics modeling

2017 ◽  
Vol 06 (03) ◽  
pp. 1750023
Author(s):  
M. Lemaalem ◽  
A. Derouiche ◽  
S. EL Fassi ◽  
H. Ridouane
Keyword(s):  
Molecular Dynamics ◽  
Dynamic Properties ◽  
Dissipative Particle Dynamics ◽  
Simulation Method ◽  
Particle Dynamics ◽  
Polymer Physics ◽  
Polymer Chains ◽  
Coarse Grained ◽  
Dynamics Modeling ◽  
Polymer Simulation

Long polymer chains that mainly exhibit thermoplastic properties are recognized to demonstrate excellent thermal and mechanical features at the molecular level. For the purpose of facilitating its study, we present the results of a coarse-grained Molecular Dynamics (MD) and Dissipative Particle Dynamics (DPD) simulations under the Canonical ensemble (NVT) conditions. For each simulation method, the structure, static and dynamic properties were analyzed, with particular emphasis on the influence of density and temperature on the equilibrium of the polymer. We find, after correcting the Soft Repulsive Potential (SRP) parameters used in DPD method, that both simulation methods describe the polymer physics with the same accuracy. This proves that the DPD method can simplify the polymer simulation and can reproduce with the same precision the equilibrium obtained in the MD simulation.

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