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Mathioudakis IG, Vogiatzis GG, Tzoumanekas C, Theodorou DN. Multiscale simulations of PS-SiO2 nanocomposites: from melt to glassy state. SOFT MATTER 2016; 12:7585-7605. [PMID: 27532769 DOI: 10.1039/c6sm01536k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The interaction energetics, molecular packing, entanglement network properties, segmental dynamics, and elastic constants of atactic polystyrene-amorphous silica nanocomposites in the molten and the glassy state are studied via molecular simulations using two interconnected levels of representation: (a) a coarse-grained one, wherein each polystyrene repeat unit is mapped onto a single "superatom" and the silica nanoparticle is viewed as a solid sphere. Equilibration at all length scales at this level is achieved via connectivity-altering Monte Carlo simulations. (b) A united-atom (UA) level, wherein the polymer chains are represented in terms of a united-atom forcefield and the silica nanoparticle is represented in terms of a simplified, fully atomistic model. Initial configurations for UA molecular dynamics (MD) simulations are obtained by reverse mapping well-equilibrated coarse-grained configurations. By analysing microcanonical UA MD trajectories, the polymer density profile is studied and the polymer is found to exhibit layering in the vicinity of the nanoparticle surface. An estimate of the enthalpy of mixing between polymer and nanoparticles, derived from the UA simulations, compares favourably against available experimental values. The dynamical behaviour of polystyrene (in neat and filled melt systems) is characterized in terms of bond orientation and dihedral angle time autocorrelation functions. At low concentration in the molten polymer matrix, silica nanoparticles are found to cause a slight deceleration of the segmental dynamics close to their surface compared to the bulk polymer. Well-equilibrated coarse-grained long-chain configurations are reduced to entanglement networks via topological analysis with the CReTA algorithm, yielding a slightly lower density of entanglements in the filled than in the neat systems. UA melt configurations are glassified by MD cooling. The elastic moduli of the resulting glassy nanocomposites are computed through an analysis of strain fluctuations in the undeformed state and through explicit mechanical deformation by MD, showing a stiffening of the polymer in the presence of nanoparticles. UA simulation results for the elastic constants are compared to continuum micromechanical calculations invoked in homogenization models of the overall mechanical behaviour of heterogeneous materials. They can be interpreted in terms of the presence of an "interphase" of approximate thickness 2 nm around the nanoparticles, with elastic constants intermediate between those of the filler and the matrix.
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Affiliation(s)
- I G Mathioudakis
- School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, GR-15780 Athens, Greece.
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Vogiatzis GG, Theodorou DN. Local Segmental Dynamics and Stresses in Polystyrene–C60 Mixtures. Macromolecules 2013. [DOI: 10.1021/ma402214r] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Georgios G. Vogiatzis
- School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou
Campus, GR-15780 Athens, Greece
| | - Doros N. Theodorou
- School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou
Campus, GR-15780 Athens, Greece
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Carbone P, Ali Karimi-Varzaneh H, Müller-Plathe F. Fine-graining without coarse-graining: an easy and fast way to equilibrate dense polymer melts. Faraday Discuss 2010; 144:25-42; discussion 93-110, 467-81. [DOI: 10.1039/b902363a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Chen X, Carbone P, Santangelo G, Di Matteo A, Milano G, Müller-Plathe F. Backmapping coarse-grained polymer models under sheared nonequilibrium conditions. Phys Chem Chem Phys 2009; 11:1977-88. [DOI: 10.1039/b817895j] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mulder T, Harmandaris VA, Lyulin AV, van der Vegt NFA, Kremer K, Michels MAJ. Structural Properties of Atactic Polystyrene of Different Thermal History Obtained from a Multiscale Simulation. Macromolecules 2008. [DOI: 10.1021/ma800873z] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tim Mulder
- Group Polymer Physics, Eindhoven Polymer Laboratories, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands; and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - V. A. Harmandaris
- Group Polymer Physics, Eindhoven Polymer Laboratories, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands; and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Alexey V. Lyulin
- Group Polymer Physics, Eindhoven Polymer Laboratories, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands; and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - N. F. A. van der Vegt
- Group Polymer Physics, Eindhoven Polymer Laboratories, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands; and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - K. Kremer
- Group Polymer Physics, Eindhoven Polymer Laboratories, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands; and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - M. A. J. Michels
- Group Polymer Physics, Eindhoven Polymer Laboratories, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB Eindhoven, The Netherlands; Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands; and Max Planck Institute for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
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Mulder T, Harmandaris VA, Lyulin AV, van der Vegt NFA, Michels MAJ. Molecular Simulation Via Connectivity-altering Monte Carlo and Scale-jumping Methods: Application to Amorphous Polystyrene. MACROMOL THEOR SIMUL 2008. [DOI: 10.1002/mats.200800024] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Spyriouni T, Tzoumanekas C, Theodorou D, Müller-Plathe F, Milano G. Coarse-Grained and Reverse-Mapped United-Atom Simulations of Long-Chain Atactic Polystyrene Melts: Structure, Thermodynamic Properties, Chain Conformation, and Entanglements. Macromolecules 2007. [DOI: 10.1021/ma0700983] [Citation(s) in RCA: 171] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Theodora Spyriouni
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, Athens GR 15780, Greece, Institute of Physical Chemistry, NRCPS “Demokritos”, Aghia Paraskevi Attikis, 153 10 Athens, Greece, and Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287
| | - Christos Tzoumanekas
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, Athens GR 15780, Greece, Institute of Physical Chemistry, NRCPS “Demokritos”, Aghia Paraskevi Attikis, 153 10 Athens, Greece, and Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287
| | - Doros Theodorou
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, Athens GR 15780, Greece, Institute of Physical Chemistry, NRCPS “Demokritos”, Aghia Paraskevi Attikis, 153 10 Athens, Greece, and Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287
| | - Florian Müller-Plathe
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, Athens GR 15780, Greece, Institute of Physical Chemistry, NRCPS “Demokritos”, Aghia Paraskevi Attikis, 153 10 Athens, Greece, and Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287
| | - Giuseppe Milano
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, Athens GR 15780, Greece, Institute of Physical Chemistry, NRCPS “Demokritos”, Aghia Paraskevi Attikis, 153 10 Athens, Greece, and Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287
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van Melick H, Govaert L, Raas B, Nauta W, Meijer H. Kinetics of ageing and re-embrittlement of mechanically rejuvenated polystyrene. POLYMER 2003. [DOI: 10.1016/s0032-3861(02)00863-7] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Colhoun FL, Armstrong RC, Rutledge GC. Analysis of Experimental Data for Polystyrene Orientation during Stress Relaxation Using Semigrand Canonical Monte Carlo Simulation. Macromolecules 2002. [DOI: 10.1021/ma020347h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Frederick L. Colhoun
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Robert C. Armstrong
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Gregory C. Rutledge
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
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Brückner S, Allegra G, Corradini P. Helix Inversions in Polypropylene and Polystyrene. Macromolecules 2002. [DOI: 10.1021/ma0118724] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sergio Brückner
- Dipartimento di Scienze e Tecnologie Chimiche, via Cotonificio 108, 33100 Udine, Italy
| | | | - Paolo Corradini
- Dipartimento di Chimica, Complesso Universitario di Monte Sant'Angelo, via Cintia, 80126 Napoli, Italy
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Kaji H, Schmidt-Rohr K. Conformation and Dynamics of Atactic Poly(acrylonitrile). 2. Torsion Angle Distributions in Meso Dyads from Two-Dimensional Solid-State Double-Quantum 13C NMR. Macromolecules 2001. [DOI: 10.1021/ma010657k] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hironori Kaji
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Chemistry and Ames Laboratory, Iowa State University, Ames, Iowa 50011
| | - Klaus Schmidt-Rohr
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Chemistry and Ames Laboratory, Iowa State University, Ames, Iowa 50011
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Deuterium-carbon NMR correlation spectroscopy: a tool for structural characterization of solids. Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(00)00878-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Kaji H, Schmidt-Rohr K. Conformation and Dynamics of Atactic Poly(acrylonitrile). 1. Trans/Gauche Ratio from Double-Quantum Solid-State 13C NMR of the Methylene Groups. Macromolecules 2000. [DOI: 10.1021/ma0002592] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hironori Kaji
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
| | - Klaus Schmidt-Rohr
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003
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Zax DB, Yang DK, Santos RA, Hegemann H, Giannelis EP, Manias E. Dynamical heterogeneity in nanoconfined poly(styrene) chains. J Chem Phys 2000. [DOI: 10.1063/1.480867] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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