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Title: Dynamics in entangled polyethylene melts [Multi time scale dynamics in entangled polyethylene melts]

Journal Article · · European Physical Journal. Special Topics
 [1];  [2];  [1];  [3];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Washington Univ., St. Louis, MO (United States)
  3. Clemson Univ., Clemson, SC (United States)

Polymer dynamics creates distinctive viscoelastic behavior as a result of a coupled interplay of motion at the atomic length scale and motion of the entire macromolecule. Capturing the broad time and length scales of polymeric motion however, remains a challenge. Using linear polyethylene as a model system, we probe the effects of the degree of coarse graining on polymer dynamics. Coarse-grained (CG) potentials are derived using iterative Boltzmann inversion with λ methylene groups per CG bead (denoted CGλ) with λ = 2,3,4 and 6 from a fully-atomistic polyethylene melt simulation. By rescaling time in the CG models by a factor α, the chain mobility for the atomistic and CG models match. We show that independent of the degree of coarse graining, all measured static and dynamic properties are essentially the same once the dynamic scaling factor α and a non-crossing constraint for the CG6 model are included. The speedup of the CG4 model is about 3 times that of the CG3 model and is comparable to that of the CG6 model. Furthermore, using these CG models we were able to reach times of over 500 μs, allowing us to measure a number of quantities, including the stress relaxation function, plateau modulus and shear viscosity, and compare directly to experiment.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1338912
Report Number(s):
SAND-2016-4254J; PII: 60142; TRN: US1701553
Journal Information:
European Physical Journal. Special Topics, Vol. 225, Issue 8-9; ISSN 1951-6355
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 17 works
Citation information provided by
Web of Science

References (64)

Resolving Dynamic Properties of Polymers through Coarse-Grained Computational Studies journal February 2016
Multiscale modeling of soft matter: scaling of dynamics journal January 2011
Mori–Zwanzig formalism as a practical computational tool journal January 2010
Rheological Evidence for a Dynamical Crossover in Polymer Melts via Nonequilibrium Molecular Dynamics journal July 2000
Entanglement interactions in polymers and the chain contour concentration journal October 1981
Connection between Polymer Molecular Weight, Density, Chain Dimensions, and Melt Viscoelastic Properties journal August 1994
Dynamic force matching: A method for constructing dynamical coarse-grained models with realistic time dependence journal April 2015
Analytical rescaling of polymer dynamics from mesoscale simulations journal June 2010
Challenges in Multiscale Modeling of Polymer Dynamics journal June 2013
Packing Length Influence in Linear Polymer Melts on the Entanglement, Critical, and Reptation Molecular Weights journal October 1999
A test of systematic coarse-graining of molecular dynamics simulations: Transport properties journal September 2013
Molecular dynamics of linear and branched alkanes journal October 1995
Why are coarse-grained force fields too fast? A look at dynamics of four coarse-grained polymers journal January 2011
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Predicting polymer dynamics at multiple length and time scales journal January 2009
Analytic embedded-atom potentials for fcc metals: Application to liquid and solid copper journal February 1991
Dynamics of Polystyrene Melts through Hierarchical Multiscale Simulations journal February 2009
An enhanced entangled polymer model for dissipative particle dynamics journal April 2012
Entanglement constraints in polymer melts. A neutron spin echo study journal November 1992
Transferable Potentials for Phase Equilibria. 1. United-Atom Description of n-Alkanes March 1998
Reversible multiple time scale molecular dynamics journal August 1992
Coarse-Graining in Polymer Simulation: From the Atomistic to the Mesoscopic Scale and Back journal September 2002
Modeling real dynamics in the coarse-grained representation of condensed phase systems journal October 2006
Time and length scales of polymer melts studied by coarse-grained molecular dynamics simulations journal July 2002
An optimized united atom model for simulations of polymethylene melts journal July 1995
Optimized intermolecular potential functions for liquid hydrocarbons journal October 1984
Obtaining fully dynamic coarse-grained models from MD journal January 2011
Simple model for chain packing and crystallization of soft colloidal polymers journal July 2013
Mapping Atomistic Simulations to Mesoscopic Models:  A Systematic Coarse-Graining Procedure for Vinyl Polymer Chains journal October 2005
Systematic coarse-graining of atomistic models for simulation of polymeric systems journal October 2005
Dynamics of entangled linear polymer melts:  A molecular‐dynamics simulation journal April 1990
Optimization of the OPLS-AA Force Field for Long Hydrocarbons journal March 2012
Clear Evidence of Reptation in Polyethylene from Neutron Spin-Echo Spectroscopy journal July 1998
Static and dynamic properties of large polymer melts in equilibrium journal April 2016
Uncrossability constraints in mesoscopic polymer melt simulations: Non-Rouse behavior of C120H242 journal August 2001
Development and Testing of the OPLS All-Atom Force Field on Conformational Energetics and Properties of Organic Liquids journal January 1996
Reptation and Contour-Length Fluctuations in Melts of Linear Polymers journal July 1998
A coarse-graining procedure for flexible polymer chains with bonded and nonbonded interactions journal May 2002
Speed up of dynamic observables in coarse-grained molecular-dynamics simulations of unentangled polymers journal September 2005
Rheology and reptation of linear polymers. Ultrahigh molecular weight chain dynamics in the melt journal May 2004
On the simulation of vapor–liquid equilibria for alkanes journal June 1998
Development and application of a particle-particle particle-mesh Ewald method for dispersion interactions journal November 2012
Multiscale simulation of soft matter systems – from the atomistic to the coarse-grained level and back journal January 2009
Dissipative particle dynamics simulations of polymer melts. I. Building potential of mean force for polyethylene and cis -polybutadiene journal October 2004
A Multiscale Coarse-Graining Method for Biomolecular Systems journal February 2005
An Automatic Coarse-Graining and Fine-Graining Simulation Method:  Application on Polyethylene journal November 2006
Coarse-grained simulations of moderately entangled star polyethylene melts journal June 2013
Properties of amorphous and crystallizable hydrocarbon polymers. I. Melt rheology of fractions of linear polyethylene journal July 1979
The MARTINI Force Field:  Coarse Grained Model for Biomolecular Simulations journal July 2007
Chain dimensions and entanglement spacings in dense macromolecular systems journal May 1999
Systematic coarse-graining of the dynamics of entangled polymer melts: the road from chemistry to rheology journal May 2011
The relative entropy is fundamental to multiscale and inverse thermodynamic problems journal October 2008
Coarse-grained molecular dynamics simulations of polymer melts in transient and steady shear flow journal June 2003
Dynamics of n-alkanes: Comparison to Rouse model journal July 1998
Coarse-grained simulations of amorphous and melted polyethylene journal February 2007
Theoretical reconstruction of realistic dynamics of highly coarse-grained cis -1,4-polybutadiene melts journal March 2013
Mesoscale model of polymer melt structure: Self-consistent mapping of molecular correlations to coarse-grained potentials journal March 2005
Comparative atomistic and coarse-grained study of water: What do we lose by coarse-graining? journal January 2009
Quantitative Analysis on the Validity of a Coarse-Grained Model for Nonequilibrium Polymeric Liquids under Flow journal April 2010
Hybrid Approaches to Coarse-Graining using the VOTCA Package: Liquid Hexane journal May 2011
Challenges in Multiscale Modeling of Polymer Dynamics text January 2013
Systematic coarse-graining of the dynamics of entangled polymer melts: the road from chemistry to rheology text January 2011
Analytical Rescaling of Polymer Dynamics from Mesoscale Simulations text January 2011
Theoretical Reconstruction of Realistic Dynamics of Highly Coarse-Grained cis-1,4-Polybutadiene Melts text January 2013

Cited By (2)

Coarse-graining auto-encoders for molecular dynamics journal December 2019
A coarse-grain model for entangled polyethylene melts and polyethylene crystallization journal June 2019

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