1
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Ghanta R, Burkhart C, Polińska P, Harmandaris V, Doxastakis M. The effect of chemical constitution on polyisoprene dynamics. J Chem Phys 2023; 159:044902. [PMID: 37486059 DOI: 10.1063/5.0155612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 07/05/2023] [Indexed: 07/25/2023] Open
Abstract
Polyisoprene (PI) melts have been studied, with most reports focusing on systems with high 1,4-cis content. In contrast, 1,4-trans PI homopolymers or random copolymers have seldom been examined, despite a handful of investigations suggesting a distinct dynamic behavior. Herein, we employ all-atom simulations to investigate the effect of chemical architecture on the dynamics of cis and trans-PI homopolymers, as well as copolymers. We examine the thermodynamic, conformational, and structural properties of the polymers and validate the performance of the models. We probe chain dynamics, revealing that cis-PI presents accelerated translation and reorientation modes relative to trans as recorded by the mean square displacement of the chain center-of-mass as well as by the characteristic times of the lower modes in a Rouse analysis. Interestingly, progressing to higher modes, we observe a reversal with trans units exhibiting faster dynamics. This was further confirmed by calculations of local carbon-hydrogen vector reorientation dynamics, which offer a microscopic view of segmental mobility. To obtain insight into the simulation trajectories, we evaluate the intermediate incoherent scattering function that supports a temperature-dependent crossover in relative mobility that extends over separations beyond the Kuhn-length level. Finally, we analyzed the role of non-Gaussian displacements, which demonstrate that cis-PI exhibits increased heterogeneity in dynamics over short-timescales in contrast to trans-PI, where deviations persist over times extending to terminal dynamics. Our all-atom simulations provide a fundamental understanding of PI dynamics and the impact of microstructure while providing important data for the design and optimization of PI-based materials.
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Affiliation(s)
- Rohit Ghanta
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Tennessee, Knoxville 37996, USA
| | - Craig Burkhart
- The Goodyear Tire & Rubber Company, Akron, Ohio 44305, USA
| | - Patrycja Polińska
- Goodyear Innovation Center Luxembourg, Avenue Gordon Smith, L-7750 Colmar-Berg, Luxembourg
| | - Vagelis Harmandaris
- Department of Applied Mathematics, University of Crete, and IACM FORTH, GR-71110 Heraklion, Greece
- Computation-based Science and Technology Research Center, The Cyprus Institute, Nicosia 2121, Cyprus
| | - Manolis Doxastakis
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Tennessee, Knoxville 37996, USA
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2
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Bottoms CM, Stein GE, Doxastakis M. Accelerated Diffusion Following Deprotection in Chemically Amplified Resists. J Phys Chem B 2022; 126:6562-6574. [PMID: 35984912 DOI: 10.1021/acs.jpcb.2c03775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Polymeric chemically amplified resists (CARs) are critical materials for high-throughput lithographic processes. A photoactivated acid-anion catalyst changes the polymer's solubility via a deprotection reaction, which enables pattern development through selective dissolution. To capture observed reaction kinetics, reaction-diffusion models employ a catalyst diffusivity that is accelerated by reaction. However, the microscopic origin and factors contributing to this phenomena remain unclear. Herein, we employ detailed atomistic molecular dynamics simulations to examine the impact of protecting group removal and material relaxation on catalyst mobility. We report data on polymer density, catalyst dispersion, excess free volume, and segmental dynamics with increasing time/extent of deprotection. We then propose simple kinetic Monte Carlo algorithms that can describe both molecular dynamics simulations of deprotection reactions and experimental data.
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Affiliation(s)
- Christopher M Bottoms
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Gila E Stein
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Manolis Doxastakis
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
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3
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In‐noi O, Prasitnok K. A Coarse‐Grained Model for
cis
‐Polyisoprene: Thermal Expansion and Glass Transition Temperature. MACROMOL THEOR SIMUL 2022. [DOI: 10.1002/mats.202100083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Orrasa In‐noi
- Department of Chemistry Faculty of Science Mahasarakham University Mahasarakham 44150 Thailand
| | - Khongvit Prasitnok
- Department of Chemistry Faculty of Science Mahasarakham University Mahasarakham 44150 Thailand
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4
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Li W, Jana PK, Behbahani AF, Kritikos G, Schneider L, Polińska P, Burkhart C, Harmandaris VA, Müller M, Doxastakis M. Dynamics of Long Entangled Polyisoprene Melts via Multiscale Modeling. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01376] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Li
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Pritam K. Jana
- Institute for Theoretical Physics, Georg-August University, 37077 Göttingen, Germany
| | - Alireza F. Behbahani
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology-Hellas, Heraklion GR-71110, Greece
| | - Georgios Kritikos
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Ludwig Schneider
- Institute for Theoretical Physics, Georg-August University, 37077 Göttingen, Germany
| | | | - Craig Burkhart
- The Goodyear Tire & Rubber Company, Akron, Ohio 44305, United States
| | - Vagelis A. Harmandaris
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology-Hellas, Heraklion GR-71110, Greece
- Department of Mathematics and Applied Mathematics, University of Crete, Heraklion GR-71110, Greece
- Computation-based Science and Technology Research Center, The Cyprus Institute, Nicosia 2121, Cyprus
| | - Marcus Müller
- Institute for Theoretical Physics, Georg-August University, 37077 Göttingen, Germany
| | - Manolis Doxastakis
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
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5
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Behbahani AF, Schneider L, Rissanou A, Chazirakis A, Bačová P, Jana PK, Li W, Doxastakis M, Polińska P, Burkhart C, Müller M, Harmandaris VA. Dynamics and Rheology of Polymer Melts via Hierarchical Atomistic, Coarse-Grained, and Slip-Spring Simulations. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02583] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Alireza F. Behbahani
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology-Hellas, Heraklion GR-71110, Greece
| | - Ludwig Schneider
- Institute for Theoretical Physics, Georg-August University Göttingen, Goettingen 37077, Germany
| | - Anastassia Rissanou
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology-Hellas, Heraklion GR-71110, Greece
| | - Anthony Chazirakis
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology-Hellas, Heraklion GR-71110, Greece
| | - Petra Bačová
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology-Hellas, Heraklion GR-71110, Greece
| | - Pritam Kumar Jana
- Institute for Theoretical Physics, Georg-August University Göttingen, Goettingen 37077, Germany
| | - Wei Li
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Manolis Doxastakis
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | | | - Craig Burkhart
- The Goodyear Tire and Rubber Company, 142 Goodyear Blvd., Akron, Ohio 44305, United States
| | - Marcus Müller
- Institute for Theoretical Physics, Georg-August University Göttingen, Goettingen 37077, Germany
| | - Vagelis A. Harmandaris
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology-Hellas, Heraklion GR-71110, Greece
- Department of Mathematics and Applied Mathematics, University of Crete, Heraklion GR-71110, Greece
- Computation-based Science and Technology Research Center, The Cyprus Institute, Nicosia 2121, Cyprus
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6
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Tanis I, Rousseau B, Soulard L, Lemarchand CA. Assessment of an anisotropic coarse-grained model for cis-1,4-polybutadiene: a bottom-up approach. SOFT MATTER 2021; 17:621-636. [PMID: 33206108 DOI: 10.1039/d0sm01572e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The spherical representation usually utilized for the coarse-grained particles of soft matter systems is an assumption and pertinent studies have shown that both structural and dynamical properties can depend on anisotropic effects. On these grounds, we develop coarse-grained equations of motion which take into account explicitly the anisotropy of the beads. As a first step, this model incorporates only conservative terms. Inclusion of the dissipative and random terms is in principle possible but is beyond the scope of this study. The translational dynamics of the beads is tracked using the position and momentum of their center of mass, while their rotational dynamics is modeled by representing their orientation through the use of quaternions, similarly to the case of rigid bodies. The associated force and torque controlling the motion are derived from atomistic molecular dynamics (MD) simulations via a bottom-up approach and define a coarse-grained potential. The assumptions of the model are clearly stated and checked for a reference system of a cis-1,4-polybutadiene melt. In particular, the choice of the angular velocity as a slow variable is justified by comparing its dynamics to atomic vibrations. The accuracy of this approach to reproduce static structural features of the polymer melt is assessed.
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Affiliation(s)
| | - Bernard Rousseau
- Université Paris-Saclay, CNRS, Institut de Chimie Physique UMR 8000, 91405 Orsay, France
| | - Laurent Soulard
- CEA, DAM, DIF, 91297 Arpajon Cedex, France. and Université Paris-Saclay, CEA, Laboratoire Matière sous Conditions Extrêmes, 91680, Bruyères-le-Châtel, France
| | - Claire A Lemarchand
- CEA, DAM, DIF, 91297 Arpajon Cedex, France. and Université Paris-Saclay, CEA, Laboratoire Matière sous Conditions Extrêmes, 91680, Bruyères-le-Châtel, France
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7
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Thermal Conductivities of Crosslinked Polyisoprene and Polybutadiene from Molecular Dynamics Simulations. Polymers (Basel) 2021; 13:polym13030315. [PMID: 33498170 PMCID: PMC7863951 DOI: 10.3390/polym13030315] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/13/2021] [Accepted: 01/14/2021] [Indexed: 12/22/2022] Open
Abstract
For the first time, the thermal conductivities of vulcanized polybutadiene and polyisoprene have been investigated according to their degree of crosslinking. The C-C and C-S-S-C crosslink bridges, which can be obtained via vulcanization processes using peroxides and sulfur, respectively, are considered. The temperature dependence of the thermal conductivity of soft rubber derived from molecular dynamics (MD) simulations is in very good agreement with the experimental results. The contributions of bonded and non-bonded interactions in the MD simulations and their influence on the thermal conductivities of polyisoprene and polybutadiene are presented. The details are discussed in this paper.
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8
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Mermigkis PG, Mavrantzas VG. Geometric Analysis of Clusters of Free Volume Accessible to Small Penetrants and Their Connectivity in Polymer Nanocomposites Containing Carbon Nanotubes. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00228] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Panagiotis G. Mermigkis
- Department of Chemical Engineering, University of Patras & FORTH/ICE-HT, Patras GR 26504, Greece
| | - Vlasis G. Mavrantzas
- Department of Chemical Engineering, University of Patras & FORTH/ICE-HT, Patras GR 26504, Greece
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zürich, CH-8092 Zürich, Switzerland
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9
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Tsourtou FD, Peristeras LD, Apostolov R, Mavrantzas VG. Molecular Dynamics Simulation of Amorphous Poly(3-hexylthiophene). Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00454] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Flora D. Tsourtou
- Department of Chemical Engineering, University of Patras & FORTH-ICE/HT, GR 26504 Patras, Greece
| | - Loukas D. Peristeras
- Molecular Thermodynamics and Modelling of Materials Laboratory, Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, GR-15310 Agia Paraskevi
Attikis, Athens, Greece
| | | | - Vlasis G. Mavrantzas
- Department of Chemical Engineering, University of Patras & FORTH-ICE/HT, GR 26504 Patras, Greece
- Department of Mechanical and Process Engineering, Particle Technology Laboratory, ETH Zürich, CH-8092 Zürich, Switzerland
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10
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Li W, Burkhart C, Polińska P, Harmandaris V, Doxastakis M. Backmapping coarse-grained macromolecules: An efficient and versatile machine learning approach. J Chem Phys 2020; 153:041101. [DOI: 10.1063/5.0012320] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Wei Li
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Craig Burkhart
- The Goodyear Tire and Rubber Company, Akron, Ohio 44305, USA
| | - Patrycja Polińska
- Goodyear Innovation Center Luxembourg, Avenue Gordon Smith, L-7750 Colmar-Berg, Luxembourg
| | - Vagelis Harmandaris
- Department of Applied Mathematics, University of Crete, and IACM FORTH, GR-71110 Heraklion, Greece
- Computation-Based Science and Technology Research Center, The Cyprus Institute, Nicosia 2121, Cyprus
| | - Manolis Doxastakis
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
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11
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Behbahani AF, Rissanou A, Kritikos G, Doxastakis M, Burkhart C, Polińska P, Harmandaris VA. Conformations and Dynamics of Polymer Chains in Cis and Trans Polybutadiene/Silica Nanocomposites through Atomistic Simulations: From the Unentangled to the Entangled Regime. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01030] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Alireza F. Behbahani
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology—Hellas, Heraklion GR-71110, Greece
| | - Anastassia Rissanou
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology—Hellas, Heraklion GR-71110, Greece
| | - Giorgos Kritikos
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology—Hellas, Heraklion GR-71110, Greece
| | - Manolis Doxastakis
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Craig Burkhart
- The Goodyear Tire and Rubber Company, 142 Goodyear Blvd., Akron, Ohio 44305, United States
| | | | - Vagelis A. Harmandaris
- Institute of Applied and Computational Mathematics, Foundation for Research and Technology—Hellas, Heraklion GR-71110, Greece
- Department of Mathematics and Applied Mathematics, University of Crete, Heraklion GR-71110, Greece
- Computation-Based Science and Technology Research Center, The Cyprus Institute, Nicosia 2121, Cyprus
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12
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Affiliation(s)
- Sara Capponi
- Department of Industrial and Applied Genomics, IBM AI and Cognitive Software Organization, IBM Almaden Research Center, San Jose, California 95120-6099, United States
- NSF Center for Cellular Construction, University of California, San Francisco, San Francisco, California 94115, United States
| | - Fernando Alvarez
- Centro de Física de Materiales (CFM) (CSIC-UPV/EHU) - Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - Dušan Račko
- Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 3, 841 45 Bratislava, Slovak Republic
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13
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Williams J, Zheng Q, Sederman AJ, Mantle MD, Baart T, Guédon C, Gladden LF. In Situ Determination of Carbon Number Distributions of Mixtures of Linear Hydrocarbons Confined within Porous Media Using Pulsed Field Gradient NMR. Anal Chem 2020; 92:5125-5133. [PMID: 32142268 DOI: 10.1021/acs.analchem.9b05600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Pulsed field gradient (PFG) NMR measurements, combined with a novel optimization method, are used to determine the composition of hydrocarbon mixtures of linear alkanes (C7-C16) in both the bulk liquid state and when imbibed within a porous medium of mean pore diameter 28.6 nm. The method predicts the average carbon number of a given mixture to an accuracy of ±1 carbon number and the mole fraction of a mixture component to within an average root-mean-square error of ±0.036 with just three calibration mixtures. Given that the method can be applied at any conditions of temperature and pressure at which the PFG NMR measurements are made, the method has the potential for application in characterizing hydrocarbon liquid mixtures inside porous media and at the operating conditions relevant to, for example, hydrocarbon recovery and heterogeneous catalysis.
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Affiliation(s)
- Jack Williams
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Qingyuan Zheng
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Andrew J Sederman
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Mick D Mantle
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Timothy Baart
- Shell Technology Centre Amsterdam, Grasweg 31, 1031 HW Amsterdam, The Netherlands
| | - Constant Guédon
- Shell Technology Centre Amsterdam, Grasweg 31, 1031 HW Amsterdam, The Netherlands
| | - Lynn F Gladden
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
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14
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Shahidi N, Chazirakis A, Harmandaris V, Doxastakis M. Coarse-graining of polyisoprene melts using inverse Monte Carlo and local density potentials. J Chem Phys 2020; 152:124902. [PMID: 32241142 DOI: 10.1063/1.5143245] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Bottom-up coarse-graining of polymers is commonly performed by matching structural order parameters such as distribution of bond lengths, bending and dihedral angles, and pair distribution functions. In this study, we introduce the distribution of nearest-neighbors as an additional order parameter in the concept of local density potentials. We describe how the inverse-Monte Carlo method provides a framework for forcefield development that is capable of overcoming challenges associated with the parameterization of interaction terms in polymer systems. The technique is applied on polyisoprene melts as a prototype system. We demonstrate that while different forcefields can be developed that perform equally in terms of matching target distributions, the inclusion of nearest-neighbors provides a straightforward route to match both thermodynamic and conformational properties. We find that several temperature state points can also be addressed, provided that the forcefield is refined accordingly. Finally, we examine both the single-particle and the collective dynamics of the coarse-grain models, demonstrating that all forcefields present a similar acceleration relative to the atomistic systems.
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Affiliation(s)
- Nobahar Shahidi
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - Antonis Chazirakis
- Department of Mathematics and Applied Mathematics, University of Crete, Heraklion GR-71110, Greece
| | - Vagelis Harmandaris
- Department of Mathematics and Applied Mathematics, University of Crete, Heraklion GR-71110, Greece
| | - Manolis Doxastakis
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
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15
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Khuntawee W, Sutthibutpong T, Phongphanphanee S, Karttunen M, Wong-Ekkabut J. Molecular dynamics study of natural rubber-fullerene composites: connecting microscopic properties to macroscopic behavior. Phys Chem Chem Phys 2019; 21:19403-19413. [PMID: 31455965 DOI: 10.1039/c9cp03155c] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Macroscopic and microscopic properties of fullerene (C60)-cis-polyisoprene (cis-PI) composites at varying fullerene concentrations were investigated using atomistic molecular dynamics (MD) simulations over microsecond time scales. Results show that the introduction of fullerenes into a polymer matrix increases density, bulk modulus and heat capacity while thermal expansivity decreases. The presence of fullerenes slowed the diffusion of both C60 and cis-PI. Moreover, increasing fullerene concentration results in ordering of the cis-PI chains at the cis-PI-fullerene interfaces and shrinking of bulk PI regions. Free energy calculations of fullerene dimerization suggest that fullerenes disperse at low and aggregate at high fullerene concentrations. Our multi-scaled analysis approach demonstrates the role of 'ordered' regions adjacent to the interface between cis-PI and fullerene in controlling the level of order and mobility of the cis-PI chains. The relationship between the microscopic behavior and the changes in mechanical and thermal properties are discussed. Our study is beneficial for further studies and development of advanced rubber technology for novel, cost-effective, material with very high stiffness and thermal endurance with optimizing conditions of filler contents.
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Affiliation(s)
- Wasinee Khuntawee
- Computational Biomodelling Laboratory for Agricultural Science and Technology (CBLAST), Faculty of Science, Kasetsart University, Bangkok 10900, Thailand. and Department of Physics, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand and Thailand Center of Excellence in Physics (ThEP Center), Commission on Higher Education, Bangkok 10400, Thailand
| | - Thana Sutthibutpong
- Computational Biomodelling Laboratory for Agricultural Science and Technology (CBLAST), Faculty of Science, Kasetsart University, Bangkok 10900, Thailand. and Thailand Center of Excellence in Physics (ThEP Center), Commission on Higher Education, Bangkok 10400, Thailand and Theoretical and Computational Science Center (TaCS), Science Laboratory Building, Faculty of Science, King Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha-Uthit Road, Bang Mod, Thrung Khru, Bangkok 10140, Thailand
| | - Saree Phongphanphanee
- Computational Biomodelling Laboratory for Agricultural Science and Technology (CBLAST), Faculty of Science, Kasetsart University, Bangkok 10900, Thailand. and Thailand Center of Excellence in Physics (ThEP Center), Commission on Higher Education, Bangkok 10400, Thailand and Department of Material Science, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand and Specialized Center of Rubber and Polymer Materials for Agriculture and Industry (RPM), Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
| | - Mikko Karttunen
- Department of Chemistry, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada and Department of Applied Mathematics, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada and The Centre of Advanced Materials and Biomaterials Research, The University of Western Ontario, 1151 Richmond Street, London, Ontario N6A 5B7, Canada
| | - Jirasak Wong-Ekkabut
- Computational Biomodelling Laboratory for Agricultural Science and Technology (CBLAST), Faculty of Science, Kasetsart University, Bangkok 10900, Thailand. and Department of Physics, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand and Thailand Center of Excellence in Physics (ThEP Center), Commission on Higher Education, Bangkok 10400, Thailand and Specialized Center of Rubber and Polymer Materials for Agriculture and Industry (RPM), Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
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16
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Jose J, Swaminathan N. Response of adhesive polymer interfaces to repeated mechanical loading and the spatial variation of diffusion coefficient and stresses in a deforming polymer film. Phys Chem Chem Phys 2019; 21:11266-11283. [PMID: 31099805 DOI: 10.1039/c9cp00576e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Comprehensive molecular simulations are conducted to show that polymer crosslinks preserve the strength of solid-polymer (melt) interfaces when they are subjected to repeated mechanical loading. The spatial variation of the diffusion coefficient and local stresses is also investigated along the polymer thickness, during deformation. After each loading cycle, a reduction in entanglement strength is observed at the fracture site. The work of adhesion also decreases over consecutive loading cycles, when fracture is induced at the same site. Reduction in both, the work of adhesion and the entanglement strength, decreases as the crosslink density increases. Diffusion coefficient and stresses vary significantly and in a complex manner along the film thickness during the entire deformation process. These variations were due to peculiar configurations occurring at each instance of separation, which are analyzed and explained in this work. The variation of diffusion coefficient during deformation suggests that other dynamic properties, such as viscosity, also vary spatially during polymer deformation.
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Affiliation(s)
- Jeeno Jose
- Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Narasimhan Swaminathan
- Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India.
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17
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Megariotis G, Vogiatzis GG, Sgouros AP, Theodorou DN. Slip Spring-Based Mesoscopic Simulations of Polymer Networks: Methodology and the Corresponding Computational Code. Polymers (Basel) 2018; 10:E1156. [PMID: 30961081 PMCID: PMC6404024 DOI: 10.3390/polym10101156] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 10/10/2018] [Accepted: 10/12/2018] [Indexed: 11/16/2022] Open
Abstract
In previous work by the authors, a new methodology was developed for Brownian dynamics/kinetic Monte Carlo (BD/kMC) simulations of polymer melts. In this study, this methodology is extended for dynamical simulations of crosslinked polymer networks in a coarse-grained representation, wherein chains are modeled as sequences of beads, each bead encompassing a few Kuhn segments. In addition, the C++ code embodying these simulations, entitled Engine for Mesoscopic Simulations for Polymer Networks (EMSIPON) is described in detail. A crosslinked network of cis-1,4-polyisoprene is chosen as a test system. From the thermodynamic point of view, the system is fully described by a Helmholtz energy consisting of three explicit contributions: entropic springs, slip springs and non-bonded interactions. Entanglements between subchains in the network are represented by slip springs. The ends of the slip springs undergo thermally activated hops between adjacent beads along the chain backbones, which are tracked by kinetic Monte Carlo simulation. In addition, creation/destruction processes are included for the slip springs at dangling subchain ends. The Helmholtz energy of non-bonded interactions is derived from the Sanchez⁻Lacombe equation of state. The isothermal compressibility of the polymer network is predicted from equilibrium density fluctuations in very good agreement with the underlying equation of state and with experiment. Moreover, the methodology and the corresponding C++ code are applied to simulate elongational deformations of polymer rubbers. The shear stress relaxation modulus is predicted from equilibrium simulations of several microseconds of physical time in the undeformed state, as well as from stress-strain curves of the crosslinked polymer networks under deformation.
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Affiliation(s)
- Grigorios Megariotis
- School of Chemical Engineering, National Technical University of Athens (NTUA), 9 Heroon Polytechniou Street, Zografou Campus, GR-15780 Athens, Greece.
| | - Georgios G Vogiatzis
- Polymer Technology, Department of Mechanical Engineering, Eindhoven University of Technology, PO BOX 513, 5600MB Eindhoven, The Netherlands.
| | - Aristotelis P Sgouros
- School of Chemical Engineering, National Technical University of Athens (NTUA), 9 Heroon Polytechniou Street, Zografou Campus, GR-15780 Athens, Greece.
| | - Doros N Theodorou
- School of Chemical Engineering, National Technical University of Athens (NTUA), 9 Heroon Polytechniou Street, Zografou Campus, GR-15780 Athens, Greece.
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18
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Lemarchand CA, Couty M, Rousseau B. Coarse-grained simulations of cis- and trans-polybutadiene: A bottom-up approach. J Chem Phys 2018; 146:074904. [PMID: 28228020 DOI: 10.1063/1.4975652] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We apply the dissipative particle dynamics strategy proposed by Hijón et al. [Faraday Discuss. 144, 301-322 (2010)] and based on an exact derivation of the generalized Langevin equation to cis- and trans-1,4-polybutadiene. We prove that it is able to reproduce not only the structural but also the dynamical properties of these polymers without any fitting parameter. A systematic study of the effect of the level of coarse-graining is done on cis-1,4-polybutadiene. We show that as the level of coarse-graining increases, the dynamical properties are better and better reproduced while the structural properties deviate more and more from those calculated in molecular dynamics (MD) simulations. We suggest two reasons for this behavior: the Markovian approximation is better satisfied as the level of coarse-graining increases, while the pair-wise approximation neglects important contributions due to the relative orientation of the beads at large levels of coarse-graining. Finally, we highlight a possible limit of the Markovian approximation: the fact that in constrained simulations, in which the centers-of-mass of the beads are kept constant, the bead rotational dynamics become extremely slow.
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Affiliation(s)
- Claire A Lemarchand
- Laboratoire de Chimie Physique, CNRS, Université Paris Sud, Bâtiment 349, 91405 Orsay Cedex, France
| | - Marc Couty
- Manufacture Française des Pneumatiques Michelin, Site de Ladoux, 23 Place des Carmes Déchaux, France Cedex 9, 63040 Clermont-Ferrand, France
| | - Bernard Rousseau
- Laboratoire de Chimie Physique, CNRS, Université Paris Sud, Bâtiment 349, 91405 Orsay Cedex, France
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19
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Ohkuma T, Kremer K. Comparison of two coarse-grained models of cis -polyisoprene with and without pressure correction. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.09.062] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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20
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Meyer J, Hentschke R, Hager J, Hojdis NW, Karimi-Varzaneh HA. Molecular Simulation of Viscous Dissipation due to Cyclic Deformation of a Silica–Silica Contact in Filled Rubber. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00947] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jan Meyer
- School
of Mathematics and Natural Sciences Bergische Universität D-42097 Wuppertal, Germany
| | - Reinhard Hentschke
- School
of Mathematics and Natural Sciences Bergische Universität D-42097 Wuppertal, Germany
| | - Jonathan Hager
- School
of Mathematics and Natural Sciences Bergische Universität D-42097 Wuppertal, Germany
| | - Nils W. Hojdis
- Continental Reifen Deutschland GmbH D-30419 Hannover, Germany
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21
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Lin E, You X, Kriegel RM, Moffitt RD, Batra RC. Interdiffusion of small molecules into a glassy polymer film via coarse-grained molecular dynamics simulations. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.03.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Vogiatzis GG, Megariotis G, Theodorou DN. Equation of State Based Slip Spring Model for Entangled Polymer Dynamics. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b01705] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Georgios G. Vogiatzis
- School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou
Campus, GR-15780 Athens, Greece
| | - Grigorios Megariotis
- 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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23
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Vogiatzis GG, Theodorou DN. Multiscale Molecular Simulations of Polymer-Matrix Nanocomposites: or What Molecular Simulations Have Taught us About the Fascinating Nanoworld. ARCHIVES OF COMPUTATIONAL METHODS IN ENGINEERING : STATE OF THE ART REVIEWS 2017; 25:591-645. [PMID: 29962833 PMCID: PMC6003436 DOI: 10.1007/s11831-016-9207-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 12/20/2016] [Indexed: 06/08/2023]
Abstract
Following the substantial progress in molecular simulations of polymer-matrix nanocomposites, now is the time to reconsider this topic from a critical point of view. A comprehensive survey is reported herein providing an overview of classical molecular simulations, reviewing their major achievements in modeling polymer matrix nanocomposites, and identifying several open challenges. Molecular simulations at multiple length and time scales, working hand-in-hand with sensitive experiments, have enhanced our understanding of how nanofillers alter the structure, dynamics, thermodynamics, rheology and mechanical properties of the surrounding polymer matrices.
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Affiliation(s)
- Georgios G. Vogiatzis
- School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, 15780 Athens, Greece
- Present Address: Department of Mechanical Engineering, Eindhoven University of Technology, PO Box 513, 5600MB Eindhoven, The Netherlands
| | - Doros N. Theodorou
- School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, 15780 Athens, Greece
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24
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Fang X, Vitrac O. Predicting diffusion coefficients of chemicals in and through packaging materials. Crit Rev Food Sci Nutr 2017; 57:275-312. [PMID: 25831407 DOI: 10.1080/10408398.2013.849654] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Most of the physicochemical properties in polymers such as activity and partition coefficients, diffusion coefficients, and their activation with temperature are accessible to direct calculations from first principles. Such predictions are particularly relevant for food packaging as they can be used (1) to demonstrate the compliance or safety of numerous polymer materials and of their constitutive substances (e.g. additives, residues…), when they are used: as containers, coatings, sealants, gaskets, printing inks, etc. (2) or to predict the indirect contamination of food by pollutants (e.g. from recycled polymers, storage ambiance…) (3) or to assess the plasticization of materials in contact by food constituents (e.g. fat matter, aroma…). This review article summarizes the classical and last mechanistic descriptions of diffusion in polymers and discusses the reliability of semi-empirical approaches used for compliance testing both in EU and US. It is concluded that simulation of diffusion in or through polymers is not limited to worst-case assumptions but could also be applied to real cases for risk assessment, designing packaging with low leaching risk or to synthesize plastic additives with low diffusion rates.
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Affiliation(s)
- Xiaoyi Fang
- a AgroParisTech, UMR 1145 Ingénierie Procédés Aliments , Massy , France.,b INRA, UMR 1145 Ingénierie Procédés Aliments , Massy , France
| | - Olivier Vitrac
- a AgroParisTech, UMR 1145 Ingénierie Procédés Aliments , Massy , France.,b INRA, UMR 1145 Ingénierie Procédés Aliments , Massy , France
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25
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Alatas PV, Tsalikis DG, Mavrantzas VG. Detailed Molecular Dynamics Simulation of the Structure and Self-Diffusion of Linear and Cyclicn-Alkanes in Melt and Blends. MACROMOL THEOR SIMUL 2016. [DOI: 10.1002/mats.201600049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Panagiotis V. Alatas
- Department of Chemical Engineering; University of Patras and FORTH-ICE/HT; Patras GR 26504 Greece
| | - Dimitrios G. Tsalikis
- Department of Chemical Engineering; University of Patras and FORTH-ICE/HT; Patras GR 26504 Greece
| | - Vlasis G. Mavrantzas
- Department of Chemical Engineering; University of Patras and FORTH-ICE/HT; Patras GR 26504 Greece
- Department of Mechanical and Process Engineering; Particle Technology Laboratory; ETH-Z,; CH-8092 Zürich Switzerland
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26
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27
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Sharma P, Roy S, Karimi-Varzaneh HA. Validation of Force Fields of Rubber through Glass-Transition Temperature Calculation by Microsecond Atomic-Scale Molecular Dynamics Simulation. J Phys Chem B 2016; 120:1367-79. [DOI: 10.1021/acs.jpcb.5b10789] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pragati Sharma
- Physical
Chemistry Division, National Chemical Laboratory, Pune, India
| | - Sudip Roy
- Physical
Chemistry Division, National Chemical Laboratory, Pune, India
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28
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Hager J, Hentschke R, Hojdis NW, Karimi-Varzaneh HA. Computer Simulation of Particle–Particle Interaction in a Model Polymer Nanocomposite. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01864] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jonathan Hager
- Fachbereich Mathematik und Naturwissenschaften, Bergische Universität, D-42097 Wuppertal, Germany
| | - Reinhard Hentschke
- Fachbereich Mathematik und Naturwissenschaften, Bergische Universität, D-42097 Wuppertal, Germany
| | - Nils W. Hojdis
- Continental Reifen Deutschland GmbH, D-30419 Hannover, Germany
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29
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Jeong C, Douglas JF. Mass dependence of the activation enthalpy and entropy of unentangled linear alkane chains. J Chem Phys 2015; 143:144905. [DOI: 10.1063/1.4932601] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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30
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Guseva DV, Komarov PV, Lyulin AV. Computational synthesis, structure, and glass transition of (1,4) Cis-polyisoprene-based nanocomposite by multiscale modeling. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/polb.23928] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Daria V. Guseva
- Group Theory of Polymers and Soft Matter Department of Applied Physics; Technische Universiteit Eindhoven; P.O. Box 513 5600 MB Eindhoven The Netherlands
- Chair of Polymer and Crystal Physics, Physics Department; M. V. Lomonosov Moscow State University; Moscow 119991 Russia
| | - Pavel V. Komarov
- Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Vavilova St. 28 Moscow 119991 Russia
- Department of Theoretical Physics; Tver State University; Sadovyj per. 35 Tver 170002 Russia
| | - Alexey V. Lyulin
- Group Theory of Polymers and Soft Matter Department of Applied Physics; Technische Universiteit Eindhoven; P.O. Box 513 5600 MB Eindhoven The Netherlands
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31
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Guseva DV, Komarov PV, Lyulin AV. Molecular-dynamics simulations of thin polyisoprene films confined between amorphous silica substrates. J Chem Phys 2014; 140:114903. [PMID: 24655202 DOI: 10.1063/1.4868231] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- D V Guseva
- Theory of Polymers and Soft Matter, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
| | - P V Komarov
- Department of Theoretical Physics, Tver State University, Sadovyj per. 35, 170002 Tver, Russia and Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova st. 28, 119991 Moscow, Russia
| | - Alexey V Lyulin
- Theory of Polymers and Soft Matter, Technische Universiteit Eindhoven, P.O. Box 513, 5600 MB, Eindhoven, The Netherlands
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32
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Pandey YN, Brayton A, Burkhart C, Papakonstantopoulos GJ, Doxastakis M. Multiscale modeling of polyisoprene on graphite. J Chem Phys 2014; 140:054908. [DOI: 10.1063/1.4863918] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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33
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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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34
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Zerze H, Mittal J, McHugh AJ. Ab Initio Crystallization of Alkanes: Structure and Kinetics of Nuclei Formation. Macromolecules 2013. [DOI: 10.1021/ma401836b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hasan Zerze
- Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18034, United States
| | - Jeetain Mittal
- Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18034, United States
| | - Anthony J. McHugh
- Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18034, United States
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35
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Harmandaris V, Doxastakis M. Molecular dynamics of polyisoprene/polystyrene oligomer blends: The role of self-concentration and fluctuations on blend dynamics. J Chem Phys 2013; 139:034904. [DOI: 10.1063/1.4813019] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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36
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37
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Pandey YN, Papakonstantopoulos GJ, Doxastakis M. Polymer/Nanoparticle Interactions: Bridging the Gap. Macromolecules 2013. [DOI: 10.1021/ma400444w] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yogendra Narayan Pandey
- Department of Chemical and Biomolecular
Engineering, University of Houston, Houston,
Texas 77004, United States
| | | | - Manolis Doxastakis
- Department of Chemical and Biomolecular
Engineering, University of Houston, Houston,
Texas 77004, United States
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38
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Lyubimov IY, Guenza MG. Theoretical reconstruction of realistic dynamics of highly coarse-grained cis-1,4-polybutadiene melts. J Chem Phys 2013; 138:12A546. [DOI: 10.1063/1.4792367] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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39
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Texter J, Bian K, Chojnowski D, Byrom J. Organosiloxane Supramolecular Liquids-Surface-Energy-Driven Phase Transitions. Angew Chem Int Ed Engl 2013; 52:2511-5. [DOI: 10.1002/anie.201208725] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Indexed: 11/10/2022]
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40
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Texter J, Bian K, Chojnowski D, Byrom J. Organosiloxane Supramolecular Liquids-Surface-Energy-Driven Phase Transitions. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201208725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Fang X, Domenek S, Ducruet V, Réfrégiers M, Vitrac O. Diffusion of Aromatic Solutes in Aliphatic Polymers above Glass Transition Temperature. Macromolecules 2013. [DOI: 10.1021/ma3022103] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaoyi Fang
- AgroParisTech, UMR 1145 Ingénierie Procédés Aliments, F-91300 Massy, France
| | - Sandra Domenek
- AgroParisTech, UMR 1145 Ingénierie Procédés Aliments, F-91300 Massy, France
| | - Violette Ducruet
- INRA, UMR 1145 Ingénierie Procédés Aliments, F-91300
Massy, France
| | | | - Olivier Vitrac
- INRA, UMR 1145 Ingénierie Procédés Aliments, F-91300
Massy, France
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42
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Uttarwar RG, Potoff J, Huang Y. Study on Interfacial Interaction between Polymer and Nanoparticle in a Nanocoating Matrix: A MARTINI Coarse-Graining Method. Ind Eng Chem Res 2013. [DOI: 10.1021/ie301228f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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43
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Braga C, Travis KP. Computer simulation of the role of torsional flexibility on mass and momentum transport for a series of linear alkanes. J Chem Phys 2012; 137:064116. [DOI: 10.1063/1.4742187] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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44
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Greiner M, Reilly AM, Briesen H. Temperature- and pressure-dependent densities, self-diffusion coefficients, and phase behavior of monoacid saturated triacylglycerides: toward molecular-level insights into processing. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:5243-5249. [PMID: 22500590 DOI: 10.1021/jf3004898] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Using molecular-dynamics (MD) simulations the densities and self-diffusion coefficients of a range of liquid monoacid triacylglycerides (TAGs) have been studied as a function of temperature and, for the first time, pressure. While offset by their ambient properties, the response of the TAGs to temperature and pressure is qualitatively similar. Application of pressure was found to significantly increase densities and reduce diffusion of the TAG molecules, suggesting that it may have as much a role in processing and crystallizing TAGs as supercooling does. A solution of glycerol tripalmitate and glycerol trihexanoate was also studied, showing that application of pressure should lead to a significant decrease in the saturation point of the solution, which is an important consideration for processing TAGs. Different solid/liquid interfaces of glycerol tripalmitate have also been investigated. Although crystal growth could not be observed, dissolution of one interface was seen in the MD simulations. The results suggest that over moderate distances the melting of TAGs may be cooperative in nature, rather than involving dissolution of individual TAG molecules.
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Affiliation(s)
- Maximilian Greiner
- Process Systems Engineering, Technische Universität München , Weihenstephaner Steig 23, D-85354 Freising, Germany
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45
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Pandey YN, Doxastakis M. Detailed atomistic Monte Carlo simulations of a polymer melt on a solid surface and around a nanoparticle. J Chem Phys 2012; 136:094901. [DOI: 10.1063/1.3689316] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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46
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Makrodimitri ZA, Unruh DJM, Economou IG. Molecular Simulation of Diffusion of Hydrogen, Carbon Monoxide, and Water in Heavy n-Alkanes. J Phys Chem B 2011; 115:1429-39. [DOI: 10.1021/jp1063269] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zoi A. Makrodimitri
- Molecular Thermodynamics and Modelling of Materials Laboratory, Institute of Physical Chemistry, National Center for Scientific Research “Demokritos”, GR-153 10 Aghia Paraskevi Attikis, Greece
| | - Dominik J. M. Unruh
- Shell Global Solutions International BV, PO Box 38000, 1030 BN Amsterdam, The Netherlands
| | - Ioannis G. Economou
- Molecular Thermodynamics and Modelling of Materials Laboratory, Institute of Physical Chemistry, National Center for Scientific Research “Demokritos”, GR-153 10 Aghia Paraskevi Attikis, Greece
- Department of Chemical Engineering, The Petroleum Institute, PO Box 2533, Abu Dhabi, United Arab Emirates
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47
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Bormuth A, Henritzi P, Vogel M. Chain-Length Dependence of the Segmental Relaxation in Polymer Melts: Molecular Dynamics Simulation Studies on Poly(propylene oxide). Macromolecules 2010. [DOI: 10.1021/ma101721d] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Bormuth
- Institut für Festkörperphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - P. Henritzi
- Institut für Festkörperphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
| | - M. Vogel
- Institut für Festkörperphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
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48
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Carbone P, Lue L. Prediction of Bulk Density and Molecular Packing in Model Dendrimers with Different Chain Stiffness. Macromolecules 2010. [DOI: 10.1021/ma1020402] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paola Carbone
- School of Chemical Engineering and Analytical Science, The University of Manchester, Oxford Road, M13 9PL, United Kingdom
| | - Leo Lue
- Department of Chemical and Process Engineering, University of Strathclyde, James Weir Building, 75 Montrose Street, Glasgow G1 1XJ, United Kingdom
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49
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Ottochian A, Molin D, Barbieri A, Leporini D. Connectivity effects in the segmental self- and cross-reorientation of unentangled polymer melts. J Chem Phys 2009; 131:174902. [DOI: 10.1063/1.3262307] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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50
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Hunt TA, Todd BD. Diffusion of linear polymer melts in shear and extensional flows. J Chem Phys 2009; 131:054904. [DOI: 10.1063/1.3202868] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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