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 …

Multiscale modeling of soft matter: scaling of dynamics

D Fritz, K Koschke, VA Harmandaris… - Physical Chemistry …, 2011 - pubs.rsc.org
Many physical phenomena and properties of soft matter systems are characterized by an
interplay of interactions and processes that span a wide range of length-and time scales …

Flow effects on melt structure and entanglement network of linear polymers: Results from a nonequilibrium molecular dynamics simulation study of a polyethylene melt …

C Baig, VG Mavrantzas, M Kroger - Macromolecules, 2010 - ACS Publications
We present detailed results about the structural, conformational, rheo-optical, and
topological properties of an entangled of C400H802 linear polyethylene (PE) melt over a …

Simulations of fast shear flows of PS oligomers confirm monomeric friction reduction in fast elongational flows of monodisperse PS melts as indicated by rheooptical …

G Ianniruberto, A Brasiello, G Marrucci - Macromolecules, 2012 - ACS Publications
It is known that polystyrene melts behave anomalously in fast elongational flows insofar as
the steady-state elongational viscosity keeps decreasing with increasing stretching rate ε̇ …

Hierarchical modelling of polystyrene melts: from soft blobs to atomistic resolution

G Zhang, A Chazirakis, VA Harmandaris, T Stuehn… - Soft Matter, 2019 - pubs.rsc.org
We demonstrate that hierarchical backmapping strategies incorporating generic blob-based
models can equilibrate melts of high-molecular-weight polymers, described with chemically …

Structure and dynamics of poly (methyl methacrylate)/graphene systems through atomistic molecular dynamics simulations

AN Rissanou, V Harmandaris - Journal of nanoparticle research, 2013 - Springer
The main goal of the present work is to examine the effect of graphene layers on the
structural and dynamical properties of polymer systems. We study hybrid poly (methyl …

Temperature and pressure dependence of polystyrene dynamics through molecular dynamics simulations and experiments

VA Harmandaris, G Floudas, K Kremer - Macromolecules, 2011 - ACS Publications
We present a detailed comparison of the segmental and chain dynamics of an atactic
monodisperse polystyrene (molecular weight 1800 g/mol)(a-PS) studied by hierarchical …

[HTML][HTML] Multi-scale modelling of dilute viscoelastic liquids: Atomistic to mesoscale mapping of polymer solutions

B Ravikumar, IK Karathanassis, T Smith, M Gavaises - Polymer, 2023 - Elsevier
A framework predicting the rheological (storage and loss moduli, first normal stress
coefficient, and relaxation time) and transport (viscosity, diffusivity) properties of non …

Comparison of two coarse-grained models of cis-polyisoprene with and without pressure correction

T Ohkuma, K Kremer - Polymer, 2017 - Elsevier
We investigate two coarse-grained models of a cis-polyisoprene melt. The bonded
interactions which are used in both models are derived by Boltzmann inversion of the …

[HTML][HTML] The geometry of generalized force matching and related information metrics in coarse-graining of molecular systems

E Kalligiannaki, V Harmandaris… - The Journal of …, 2015 - pubs.aip.org
Using the probabilistic language of conditional expectations, we reformulate the force
matching method for coarse-graining of molecular systems as a projection onto spaces of …