Challenges in multiscale modeling of polymer dynamics

Y Li, BC Abberton, M Kröger, WK Liu - Polymers, 2013 - mdpi.com
The mechanical and physical properties of polymeric materials originate from the interplay of
phenomena at different spatial and temporal scales. As such, it is necessary to adopt …

A predictive multiscale computational framework for viscoelastic properties of linear polymers

Y Li, S Tang, BC Abberton, M Kröger, C Burkhart… - Polymer, 2012 - Elsevier
A predictive multiscale computational framework has been proposed to study the
viscoelastic properties of polymeric materials. Using the Inverse Boltzmann Method, both the …

Nanoparticle geometrical effect on structure, dynamics and anisotropic viscosity of polyethylene nanocomposites

Y Li, M Kröger, WK Liu - Macromolecules, 2012 - ACS Publications
Addition of nanoparticles into a polymer matrix can significantly alter its structure, dynamics
as well as viscosity. In this paper, we study the structural, dynamical and viscous behaviors …

Time-domain NMR observation of entangled polymer dynamics: Universal behavior of flexible homopolymers and applicability of the tube model

F Vaca Chávez, K Saalwächter - Macromolecules, 2011 - ACS Publications
Using a benchtop NMR spectrometer, we performed proton multiple-quantum NMR
experiments to study the dynamics of well-entangled linear poly (butadiene), poly …

Dynamics of Long Entangled Polyisoprene Melts via Multiscale Modeling

W Li, PK Jana, AF Behbahani, G Kritikos… - …, 2021 - ACS Publications
A recently proposed hierarchical triple-scale simulation methodology (Behbahani et al.,
Macromolecules, 2021, 54, 2740–2762) is applied to cis-1, 4 polyisoprene melts of a broad …

Primitive chain network study on uncrosslinked and crosslinked cis-polyisoprene polymers

Y Li, M Kröger, WK Liu - Polymer, 2011 - Elsevier
In this paper, the polymer chain packing and primitive path (PP) network of uncrosslinked
and crosslinked cis-polyisoprene (PI) polymer are analyzed upon employing coarse-grained …

[HTML][HTML] Communication: Appearance of undershoots in start-up shear: Experimental findings captured by tumbling-snake dynamics

PS Stephanou, T Schweizer, M Kröger - The Journal of chemical …, 2017 - pubs.aip.org
Our experimental data unambiguously show (i) a damping behavior (the appearance of an
undershoot following the overshoot) in the transient shear viscosity of a concentrated …

Primitive-path statistics of entangled polymers: mapping multi-chain simulations onto single-chain mean-field models

RJA Steenbakkers, C Tzoumanekas, Y Li… - New Journal of …, 2014 - iopscience.iop.org
We present a method to map the full equilibrium distribution of the primitive-path (PP) length,
obtained from multi-chain simulations of polymer melts, onto a single-chain mean …

Microscopic description of entanglements in polyethylene networks and melts: strong, weak, pairwise, and collective attributes

SD Anogiannakis, C Tzoumanekas… - Macromolecules, 2012 - ACS Publications
We present atomistic molecular dynamics simulations of two Polyethylene systems where all
entanglements are trapped: a perfect network, and a melt with grafted chain ends. We …

Predicting high-density polyethylene melt rheology using a multimode tube model derived using non-equilibrium thermodynamics

PC Konstantinou, PS Stephanou - Polymers, 2023 - mdpi.com
Based on the Generalized bracket, or Beris–Edwards, formalism of non-equilibrium
thermodynamics, we recently proposed a new differential constitutive model for the …