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Li HY, Zhang B, Wang ZY. Conformational and static properties of tagged chains in solvents: effect of chain connectivity in solvent molecules. SOFT MATTER 2024; 20:3073-3081. [PMID: 38265776 DOI: 10.1039/d3sm01473h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Polymer chains immersed in different solvent molecules exhibit diverse properties due to multiple spatiotemporal scales and complex interactions. Using molecular dynamics simulations, we study the conformational and static properties of tagged chains in different solvent molecules. Two types of solvent molecules were examined: one type consisted of chain molecules connected by bonds, while the other type consisted of individual bead molecules without any bonds. The only difference between the two solvent molecules lies in the chain connectivity. Our results show a compression of the tagged chains with the addition of bead or chain molecules. Chain molecule confinement induces a stronger compression compared to bead molecule confinement. In chain solvent molecules, the tagged chain's radius of gyration reached a minimum at a monomer volume fraction of ∼0.3. Notably, the probability distributions of chain size remain unchanged at different solvent densities, irrespective of whether the solvent consists of beads or polymers. Furthermore, as solvent density increases, a crossover from a unimodal to a bimodal distribution of bond angles is observed, indicating the presence of both compressed and expanded regions within the chain. The effective monomer-solvent interaction is obtained by calculating the partial radial distribution function and the potential of the mean force. In chain solvents, the correlation hole effect results in a reduced number of nearest neighbors around tagged monomers compared to bead solvents. The calculation of pore size distribution reveals that the solvent nonhomogeneity induced by chain connectivity leads to a broader distribution of pore sizes and larger pore dimensions at low volume fractions. These findings provide a deeper understanding of the conformational behavior of polymer chains in different solvent environments.
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Affiliation(s)
- Hong-Yao Li
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China.
- Chongqing Key Laboratory of Micro-Nano Structure Optoelectronics, Chongqing 400715, China
| | - Bokai Zhang
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China.
- Chongqing Key Laboratory of Micro-Nano Structure Optoelectronics, Chongqing 400715, China
| | - Zhi-Yong Wang
- School of Physical Science and Technology, Southwest University, Chongqing 400715, China.
- Chongqing Key Laboratory of Micro-Nano Structure Optoelectronics, Chongqing 400715, China
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2
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Moghimikheirabadi A, Kröger M, Karatrantos AV. Insights from modeling into structure, entanglements, and dynamics in attractive polymer nanocomposites. SOFT MATTER 2021; 17:6362-6373. [PMID: 34128028 PMCID: PMC8262555 DOI: 10.1039/d1sm00683e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 06/08/2021] [Indexed: 05/28/2023]
Abstract
Conformations, entanglements and dynamics in attractive polymer nanocomposites are investigated in this work by means of coarse-grained molecular dynamics simulation, for both weak and strong confinements, in the presence of nanoparticles (NPs) at NP volume fractions φ up to 60%. We show that the behavior of the apparent tube diameter dapp in such nanocomposites can be greatly different from nanocomposites with nonattractive interactions. We find that this effect originates, based on a mean field argument, from the geometric confinement length dgeo at strong confinement (large φ) and not from the bound polymer layer on NPs (interparticle distance ID <2Rg) as proposed recently based on experimental measurements. Close to the NP surface, the entangled polymer mobility is reduced in attractive nanocomposites but still faster than the NP mobility for volume fractions beyond 20%. Furthermore, entangled polymer dynamics is hindered dramatically by the strong confinement created by NPs. For the first time using simulations, we show that the entangled polymer conformation, characterized by the polymer radius of gyration Rg and form factor, remains basically unperturbed by the presence of NPs up to the highest volume fractions studied, in agreement with various experiments on attractive nanocomposites. As a side-result we demonstrate that the loose concept of ID can be made a microscopically well defined quantity using the mean pore size of the NP arrangement.
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Affiliation(s)
- Ahmad Moghimikheirabadi
- Department of Materials, Polymer Physics, ETH Zurich, Leopold-Ruzicka-Weg 4, CH-8093 Zurich, Switzerland.
| | - Martin Kröger
- Department of Materials, Polymer Physics, ETH Zurich, Leopold-Ruzicka-Weg 4, CH-8093 Zurich, Switzerland.
| | - Argyrios V Karatrantos
- Materials Research and Technology, Luxembourg Institute of Science and Technology, 5, Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg.
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3
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Lu S, Wu Z, Jayaraman A. Molecular Modeling and Simulation of Polymer Nanocomposites with Nanorod Fillers. J Phys Chem B 2021; 125:2435-2449. [PMID: 33646794 DOI: 10.1021/acs.jpcb.1c00097] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We present a coarse-grained (CG) molecular dynamics (MD) simulation study of polymer nanocomposites (PNCs) containing nanorods with homogeneous and patchy surface chemistry/functionalization, modeled with isotropic and directional nanorod-nanorod attraction, respectively. We show how the PNC morphology is impacted by the nanorod design (i.e., aspect ratio, homogeneous or patchy surface chemistry/functionalization) for nanorods with a diameter equal to the Kuhn length of the polymer in the matrix. For PNCs with 10 vol % nanorods that have an aspect ratio ≤5, we observe percolated morphology with directional nanorod-nanorod attraction and phase-separated (i.e., nanorod aggregation) morphology with isotropic nanorod-nanorod attraction. In contrast, for nanorods with higher aspect ratios, both types of attractions result in aggregated nanorods morphology due to the dominance of entropic driving forces that cause long nanorods to form orientationally ordered aggregates. For most PNCs with isotropic or directional nanorod-nanorod attractions, the average matrix polymer conformation is not perturbed by the inclusion of up to 20 vol % nanorods. The polymer chains in contact with nanorods (i.e., interfacial chains) are on average extended and statistically different from the conformations the matrix chains adopt in the pure melt state (with no nanorods); in contrast, the polymer chains far from nanorods (i.e., bulk chains) adopt the same conformations as the matrix chains adopt in the pure melt state. We also study the effect of other parameters, such as attraction strength, nanorod volume fraction, and matrix chain length, for PNCs with isotropic or directional nanorod-nanorod attractions. Collectively, our results provide valuable design rules to achieve specific PNC morphologies (i.e., dispersed, aggregated, percolated, and orientationally aligned nanorods) for various potential applications.
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Affiliation(s)
- Shizhao Lu
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
| | - Zijie Wu
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
| | - Arthi Jayaraman
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States.,Department of Materials Science and Engineering, University of Delaware, 201 DuPont Hall, Newark, Delaware 19716, United States
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Zhang T, Winey KI, Riggleman RA. Polymer Conformations and Dynamics under Confinement with Two Length Scales. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01779] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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5
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Jouault N, Kumar SK, Smalley RJ, Chi C, Moneta R, Wood B, Salerno H, Melnichenko YB, He L, Guise WE, Hammouda B, Crawford MK. Do Very Small POSS Nanoparticles Perturb s-PMMA Chain Conformations? Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00432] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Nicolas Jouault
- Sorbonne Université, CNRS, Laboratoire Physicochimie des Electrolytes et des Nanosystèmes InterfaciauX, PHENIX F-75005 Paris, France
| | - Sanat K. Kumar
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Robert J. Smalley
- DuPont Central
Research
and Development, E400/5424, Wilmington, Delaware 19880-0400, United States
| | - Changzai Chi
- DuPont Central
Research
and Development, E400/5424, Wilmington, Delaware 19880-0400, United States
| | - Robert Moneta
- DuPont Central
Research
and Development, E400/5424, Wilmington, Delaware 19880-0400, United States
| | - Barbara Wood
- DuPont Central
Research
and Development, E400/5424, Wilmington, Delaware 19880-0400, United States
| | - Holly Salerno
- DuPont Central
Research
and Development, E400/5424, Wilmington, Delaware 19880-0400, United States
| | - Yuri B. Melnichenko
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393, United States
| | - Lilin He
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6393, United States
| | - William E. Guise
- DuPont Central
Research
and Development, E400/5424, Wilmington, Delaware 19880-0400, United States
- Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Ave., Lemont, Illinois 60439, United States
| | - Boualem Hammouda
- NIST Center for Neutron
Research, Gaithersburg, Maryland 20879-8562, United States
| | - Michael K. Crawford
- DuPont Central
Research
and Development, E400/5424, Wilmington, Delaware 19880-0400, United States
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716, United States
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Thomas JC, Demko AR, Sammet TE, Reid DL, Seal S, Petersen EL. Mechanical Properties of Composite AP/HTPB Propellants Containing Novel Titania Nanoparticles. PROPELLANTS EXPLOSIVES PYROTECHNICS 2016. [DOI: 10.1002/prep.201600090] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- James C. Thomas
- Mechanical Engineering Texas A&M University College Station TX 77843 USA
| | - Andrew R. Demko
- Mechanical Engineering Texas A&M University College Station TX 77843 USA
| | - Thomas E. Sammet
- Mechanical Engineering Texas A&M University College Station TX 77843 USA
| | - David L. Reid
- Materials Science and Engineering University of Central Florida Orlando FL 32816 USA
| | - Sudipta Seal
- Materials Science and Engineering University of Central Florida Orlando FL 32816 USA
| | - Eric L. Petersen
- Mechanical Engineering Texas A&M University College Station TX 77843 USA
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Affiliation(s)
- Chia-Chun Lin
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
| | - Emmabeth Parrish
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
| | - Russell J. Composto
- Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6272, United States
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Karatrantos A, Clarke N, Kröger M. Modeling of Polymer Structure and Conformations in Polymer Nanocomposites from Atomistic to Mesoscale: A Review. POLYM REV 2016. [DOI: 10.1080/15583724.2015.1090450] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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9
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Karatrantos A, Clarke N, Composto RJ, Winey KI. Polymer conformations in polymer nanocomposites containing spherical nanoparticles. SOFT MATTER 2015; 11:382-388. [PMID: 25387277 DOI: 10.1039/c4sm01980f] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We investigate the effect of various spherical nanoparticles on chain dimensions in polymer melts for high nanoparticle loading which is larger than the percolation threshold, using molecular dynamics simulations. We show that polymer chains are unperturbed by the presence of repulsive nanoparticles. In contrast polymer chains can be perturbed by the presence of attractive nanoparticles when the polymer radius of gyration is larger than the nanoparticle radius. At high nanoparticle loading, chains can be stretched and flattened by the nanoparticles, even oligomers can expand under the presence of attractive nanoparticles of very small size.
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Affiliation(s)
- Argyrios Karatrantos
- Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK.
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Pomposo JA, de Luzuriaga AR, García I, Etxeberria A, Colmenero J. A Nanotechnology Pathway to Arresting Phase Separation in Soft Nanocomposites. Macromol Rapid Commun 2011; 32:573-8. [DOI: 10.1002/marc.201000720] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Revised: 12/13/2010] [Indexed: 11/09/2022]
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Schmidt RG, Gordon GV, Dreiss CA, Cosgrove T, Krukonis VJ, Williams K, Wetmore PM. A Critical Size Ratio for Viscosity Reduction in Poly(dimethylsiloxane)−Polysilicate Nanocomposites. Macromolecules 2010. [DOI: 10.1021/ma1004919] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Glenn V. Gordon
- Dow Corning Corporation, Midland, Michigan 48686-0994, United States
| | - Cécile A. Dreiss
- Pharmaceutical Science Division, King's College London, SE1 9NH London, U.K
| | - Terence Cosgrove
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS, U.K
| | - Val J. Krukonis
- Phasex Corporation, Lawrence, Massachusetts 01843, United States
| | - Kara Williams
- Phasex Corporation, Lawrence, Massachusetts 01843, United States
| | - Paula M. Wetmore
- Phasex Corporation, Lawrence, Massachusetts 01843, United States
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Frischknecht AL, McGarrity ES, Mackay ME. Expanded chain dimensions in polymer melts with nanoparticle fillers. J Chem Phys 2010; 132:204901. [DOI: 10.1063/1.3428760] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Liu J, Cao D, Zhang L, Wang W. Time−Temperature and Time−Concentration Superposition of Nanofilled Elastomers: A Molecular Dynamics Study. Macromolecules 2009. [DOI: 10.1021/ma802744e] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jun Liu
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, and Division of Molecular and Materials Simulation, Key Laboratory for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Dapeng Cao
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, and Division of Molecular and Materials Simulation, Key Laboratory for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Liqun Zhang
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, and Division of Molecular and Materials Simulation, Key Laboratory for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Wenchuan Wang
- Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, and Division of Molecular and Materials Simulation, Key Laboratory for Nanomaterials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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Ruiz de Luzuriaga A, Grande HJ, Pomposo JA. Phase diagrams in compressible weakly interacting all-polymer nanocomposites. J Chem Phys 2009; 130:084905. [DOI: 10.1063/1.3078248] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Liu J, Zhang L, Cao D, Wang W. Static, rheological and mechanical properties of polymer nanocomposites studied by computer modeling and simulation. Phys Chem Chem Phys 2009; 11:11365-84. [DOI: 10.1039/b913511a] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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de Luzuriaga AR, Etxeberria A, Rodríguez J, Pomposo JA. Phase diagram and entropic interaction parameter of athermal all‐polymer nanocomposites. POLYM ADVAN TECHNOL 2008. [DOI: 10.1002/pat.1029] [Citation(s) in RCA: 15] [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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17
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18
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Tuteja A, Duxbury PM, Mackay ME. Polymer chain swelling induced by dispersed nanoparticles. PHYSICAL REVIEW LETTERS 2008; 100:077801. [PMID: 18352595 DOI: 10.1103/physrevlett.100.077801] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2007] [Indexed: 05/26/2023]
Abstract
The dimensions of individual deuterated polystyrene (d-PS) chains in a well-dispersed mixture of protonated polystyrene and chemically identical nanoparticles was determined by neutron scattering. A 10%-20% increase in the radius of gyration of d-PS was found when the nanoparticles are homogeneously dispersed in the polymer, an effect that occurs only when the radius of gyration of the polymer is larger than the nanoparticle radius. These results are reconciled with the existing literature.
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Affiliation(s)
- Anish Tuteja
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824 USA
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Pomposo JA, Ruiz de Luzuriaga A, Etxeberria A, Rodríguez J. Key role of entropy in nanoparticle dispersion: polystyrene-nanoparticle/linear-polystyrene nanocomposites as a model system. Phys Chem Chem Phys 2008; 10:650-1. [DOI: 10.1039/b714107f] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mark JE, Abou-Hussein R, Sen TZ, Kloczkowski A. Monte Carlo Simulations on Nanoparticles in Elastomers. Effects of the Particles on the Dimensions of the Polymer Chains and the Mechanical Properties of the Networks. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/masy.200751004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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