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Ngai KL, Capaccioli S. Unified explanation of the anomalous dynamic properties of highly asymmetric polymer blends. J Chem Phys 2013; 138:054903. [DOI: 10.1063/1.4789585] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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2
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Ngai KL, Habasaki J, Prevosto D, Capaccioli S, Paluch M. Thermodynamic scaling of α-relaxation time and viscosity stems from the Johari-Goldstein β-relaxation or the primitive relaxation of the coupling model. J Chem Phys 2012; 137:034511. [DOI: 10.1063/1.4736547] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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3
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Boland EK, Liu J, Maranas JK. A molecular picture of motion in polyolefins. J Chem Phys 2010; 132:144901. [DOI: 10.1063/1.3366660] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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4
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Sacristan J, Chen C, Maranas JK. Role of Effective Composition on Dynamics of PEO−PMMA Blends. Macromolecules 2008. [DOI: 10.1021/ma8003373] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Javier Sacristan
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Chunxia Chen
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Janna K. Maranas
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
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5
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García Sakai V, Maranas JK, Peral I, Copley JRD. Dynamics of PEO in Blends with PMMA: Study of the Effects of Blend Composition via Quasi-Elastic Neutron Scattering. Macromolecules 2008. [DOI: 10.1021/ma0714870] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Victoria García Sakai
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Janna K. Maranas
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Inmaculada Peral
- NIST Center for Neutron Research, National Institute of Standards & Technology, Gaithersburg, Maryland 20899, and Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742
| | - John R. D. Copley
- NIST Center for Neutron Research, National Institute of Standards & Technology, Gaithersburg, Maryland 20899
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Ngai KL, Capaccioli S, Shinyashiki N. The Protein “Glass” Transition and the Role of the Solvent. J Phys Chem B 2008; 112:3826-32. [DOI: 10.1021/jp710462e] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K. L. Ngai
- Naval Research Laboratory, Washington, DC, 20375-5320, Dipartimento di Fisica, Università di Pisa, Largo B. Pontecorvo 3, I-56127, Pisa, Italy, and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127, Pisa, Italy, and Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - S. Capaccioli
- Naval Research Laboratory, Washington, DC, 20375-5320, Dipartimento di Fisica, Università di Pisa, Largo B. Pontecorvo 3, I-56127, Pisa, Italy, and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127, Pisa, Italy, and Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - N. Shinyashiki
- Naval Research Laboratory, Washington, DC, 20375-5320, Dipartimento di Fisica, Università di Pisa, Largo B. Pontecorvo 3, I-56127, Pisa, Italy, and polyLab, CNR-INFM, Largo B. Pontecorvo 3, I-56127, Pisa, Italy, and Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
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Ramos J, Peristeras LD, Theodorou DN. Monte Carlo Simulation of Short Chain Branched Polyolefins in the Molten State. Macromolecules 2007. [DOI: 10.1021/ma071615k] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Javier Ramos
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, 15780 Athens, Greece and Department of Macromolecular Physics, Instituto de Estructura de la Materia, CSIC, Serrano 113 bis, 28006 Madrid, Spain
| | - Loukas D. Peristeras
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, 15780 Athens, Greece and Department of Macromolecular Physics, Instituto de Estructura de la Materia, CSIC, Serrano 113 bis, 28006 Madrid, Spain
| | - Doros N. Theodorou
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, 15780 Athens, Greece and Department of Macromolecular Physics, Instituto de Estructura de la Materia, CSIC, Serrano 113 bis, 28006 Madrid, Spain
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Colmenero J, Arbe A. Segmental dynamics in miscible polymer blends: recent results and open questions. SOFT MATTER 2007; 3:1474-1485. [PMID: 32900101 DOI: 10.1039/b710141d] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
In this short review we summarize the outcome of the large amount of effort made during the past decade from both the experimental and the theoretical point of view in order to understand the effect of blending on the segmental dynamics in polymers. Each of the two families of models proposed-one based on thermally activated concentration fluctuations, the other on chain connectivity effects-account for each of the two main experimental observations: the broadening of the component response with respect to that of the homopolymer and the dynamic heterogeneity, respectively. The complementarity of these approaches, their main achievements and failures, are critically revised. We also include recent results on blends of components with very different mobilities. In the neighbourhood of the glass-transition of the slow polymer, the dynamics of the other component seem to be confined within the frozen chains. We suggest possible ingredients and new routes to be considered in order to elaborate more predictive theoretical frameworks for all these phenomena.
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Affiliation(s)
- J Colmenero
- Centro de Física de Materiales (CSIC-UPV/EHU), Apartado 1072, 20080, San Sebastián, Spain and Donostia International Physics Center, San Sebastián, Spain.
| | - A Arbe
- Centro de Física de Materiales (CSIC-UPV/EHU), Apartado 1072, 20080, San Sebastián, Spain
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May AF, Maranas JK. The single chain limit of structural relaxation in a polyolefin blend. J Chem Phys 2006; 125:24906. [PMID: 16848610 DOI: 10.1063/1.2204034] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The influence of composition on component dynamics and relevant static properties in a miscible polymer blend is investigated using molecular dynamics simulation. Emphasis is placed on dynamics in the single chain dilution limit, as this limit isolates the role of inherent component mobility in the polymer's dynamic behavior when placed in a blend. For our systems, a biased local concentration affecting dynamics must arise primarily from chain connectivity, which is quantified by the self-concentration, because concentration fluctuations are minimized due to restraints on chain lengths arising from simulation considerations. The polyolefins simulated [poly(ethylene-propylene) (PEP) and poly(ethylene-butene) (PEB)] have similar structures and glass transition temperatures, and all interactions are dispersive in nature. We find that the dependence of dynamics upon composition differs between the two materials. Specifically, PEB (slower component) is more influenced by the environment than PEP. This is linked to a smaller self-concentration for PEB than PEP. We examine the accuracy of the Lodge-McLeish model (which is based on chain connectivity acting over the Kuhn segment length) in predicting simulation results for effective concentration. The model predicts the simulation results with high accuracy when the model's single parameter, the self-concentration, is calculated from simulation data. However, when utilizing the theoretical prediction of the self-concentration the model is not quantitatively accurate. The ability of the model to link the simulated self-concentration with biased local compositions at the Kuhn segment length provides strong support for the claim that chain connectivity is the leading cause of distinct mobility in polymer blends. Additionally, the direct link between the willingness of a polymer to be influenced by the environment and the value of the self-concentration emphasizes the importance of the chain connectivity. Furthermore, these findings are evidence that the Kuhn segment length is the relevant length scale controlling segmental dynamics.
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Affiliation(s)
- Andrew F May
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
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Takemura K, Furuya H, Kanaya T. Motional coherency in chain dynamics of polybutadiene studied by molecular dynamics simulations. POLYMER 2006. [DOI: 10.1016/j.polymer.2006.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Pérez Aparicio R, Arbe A, Colmenero J, Frick B, Willner L, Richter D, Fetters LJ. Quasielastic Neutron Scattering Study on the Effect of Blending on the Dynamics of Head-to-Head Poly(propylene) and Poly(ethylene−propylene). Macromolecules 2006. [DOI: 10.1021/ma052006k] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- R. Pérez Aparicio
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain; Unidad Física de Materiales (CSIC-UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany; and School of Chemical and Biomolecular Engineering, Cornell University, Ithaca,
| | - A. Arbe
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain; Unidad Física de Materiales (CSIC-UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany; and School of Chemical and Biomolecular Engineering, Cornell University, Ithaca,
| | - J. Colmenero
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain; Unidad Física de Materiales (CSIC-UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany; and School of Chemical and Biomolecular Engineering, Cornell University, Ithaca,
| | - B. Frick
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain; Unidad Física de Materiales (CSIC-UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany; and School of Chemical and Biomolecular Engineering, Cornell University, Ithaca,
| | - L. Willner
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain; Unidad Física de Materiales (CSIC-UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany; and School of Chemical and Biomolecular Engineering, Cornell University, Ithaca,
| | - D. Richter
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain; Unidad Física de Materiales (CSIC-UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany; and School of Chemical and Biomolecular Engineering, Cornell University, Ithaca,
| | - L. J. Fetters
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain; Unidad Física de Materiales (CSIC-UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany; and School of Chemical and Biomolecular Engineering, Cornell University, Ithaca,
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Ngai K. Interpreting the dynamics of nano-confined glass-formers and thin polymer films: Importance of starting from a viable theory for the bulk. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/polb.20923] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ngai KL, Casalini R, Capaccioli S, Paluch M, Roland CM. Do Theories of the Glass Transition, in which the Structural Relaxation Time Does Not Define the Dispersion of the Structural Relaxation, Need Revision? J Phys Chem B 2005; 109:17356-60. [PMID: 16853218 DOI: 10.1021/jp053439s] [Citation(s) in RCA: 139] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Upon decreasing temperature or increasing pressure, a noncrystallizing liquid will vitrify; that is, the structural relaxation time, taualpha, becomes so long that the system cannot attain an equilibrium configuration in the available time. Theories, including the well-known free volume and configurational entropy models, explain the glass transition by invoking a single quantity that governs the structural relaxation time. The dispersion of the structural relaxation (i.e., the structural relaxation function) is either not addressed or is derived as a parallel consequence (or afterthought) and thus is independent of taualpha. In these models the time dependence of the relaxation bears no fundamental relationship to the value of taualpha or other dynamic properties. Such approaches appear to be incompatible with a general experimental fact recently discovered in glass-formers: for a given material at a fixed value of taualpha, the dispersion is constant, independent of thermodynamic conditions (T and P); that is, the shape of the alpha-relaxation function depends only on the relaxation time. If derived independently of taualpha, it is an unlikely result that the dispersion of the structural relaxation would be uniquely defined by taualpha.
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Affiliation(s)
- K L Ngai
- Naval Research Laboratory, Washington D.C. 20375-5320, Chemistry Department, George Mason University, Fairfax, Virginia, USA
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Neelakantan A, May A, Maranas JK. The Role of Environment in Structural Relaxation of Miscible Polymer Blends. Macromolecules 2005. [DOI: 10.1021/ma035980x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arun Neelakantan
- Department of Chemical Engineering, The Pennsylvania State University, Univeristy Park, Pennsylvania 16802
| | - Andrew May
- Department of Chemical Engineering, The Pennsylvania State University, Univeristy Park, Pennsylvania 16802
| | - Janna K. Maranas
- Department of Chemical Engineering, The Pennsylvania State University, Univeristy Park, Pennsylvania 16802
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García Sakai V, Maranas JK, Chowdhuri Z, Peral I, Copley JRD. Miscible blend dynamics and the length scale of local compositions. ACTA ACUST UNITED AC 2005. [DOI: 10.1002/polb.20562] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Sakai VG, Chen C, Maranas JK, Chowdhuri Z. Effect of Blending with Poly(ethylene oxide) on the Dynamics of Poly(methyl methacrylate): A Quasi-Elastic Neutron Scattering Approach. Macromolecules 2004. [DOI: 10.1021/ma0497355] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Victoria García Sakai
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Chunxia Chen
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Janna K. Maranas
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Zema Chowdhuri
- NIST Center for Neutron Research, Gaithersburg, Maryland 20899, and Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742
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Neelakantan A, Maranas JK. Intra- and Intermolecular Packing in Polyolefin Blends. Macromolecules 2004. [DOI: 10.1021/ma0303770] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Arun Neelakantan
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Janna K. Maranas
- Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
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