1
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Osaka N, Takeda N, Adachi M, Okufuji M, Osaka R. Miscibility, Hierarchical Structures, and Enhanced Mechanical Properties of Acrylic Rubber by the Formation of a Chemically and Physically Crosslinked Partially Miscible Interpenetrating Polymer Network with Poly(vinylidene fluoride). Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- Noboru Osaka
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridai-cho,
Kita-ku, Okayama700-0005, Japan
| | - Natsuko Takeda
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridai-cho,
Kita-ku, Okayama700-0005, Japan
| | - Maki Adachi
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridai-cho,
Kita-ku, Okayama700-0005, Japan
| | - Misaki Okufuji
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridai-cho,
Kita-ku, Okayama700-0005, Japan
| | - Rikuto Osaka
- Department of Chemistry, Faculty of Science, Okayama University of Science, 1-1 Ridai-cho,
Kita-ku, Okayama700-0005, Japan
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2
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Wolf CM, Guio L, Scheiwiller S, Pakhnyuk V, Luscombe C, Pozzo LD. Strategies for the Development of Conjugated Polymer Molecular Dynamics Force Fields Validated with Neutron and X-ray Scattering. ACS POLYMERS AU 2021; 1:134-152. [PMID: 36855657 PMCID: PMC9954299 DOI: 10.1021/acspolymersau.1c00027] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Conjugated polymers (CPs) enable a wide range of lightweight, lower cost, and flexible organic electronic devices, but a thorough understanding of relationships between molecular structure and dynamics and electronic performance is critical for improved device efficiencies and for new technologies. Molecular dynamics (MD) simulations offer in silico insight into this relationship, but their accuracy relies on the approach used to develop the model's parameters or force field (FF). In this Perspective, we first review current FFs for CPs and find that most of the models implement an arduous reparameterization of inter-ring torsion potentials and partial charges of classical FFs. However, there are few FFs outside of simple CP molecules, e.g., polythiophenes, that have been developed over the last two decades. There is also limited reparameterization of other parameters, such as nonbonded Lennard-Jones interactions, which we find to be directly influenced by conjugation in these materials. We further provide a discussion on experimental validation of MD FFs, with emphasis on neutron and X-ray scattering. We define multiple ways in which various scattering methods can be directly compared to results of MD simulations, providing a powerful experimental validation metric of local structure and dynamics at relevant length and time scales to charge transport mechanisms in CPs. Finally, we offer a perspective on the use of neutron scattering with machine learning to enable high-throughput parametrization of accurate and experimentally validated CP FFs enabled not only by the ongoing advancements in computational chemistry, data science, and high-performance computing but also using oligomers as proxies for longer polymer chains during FF development.
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Affiliation(s)
- Caitlyn M. Wolf
- Department
of Chemical Engineering, University of Washington, Box 351750, Seattle, Washington 98195-1750, United States,Center
for Neutron Research, Stop 6102, National
Institute of Standards and Technology, Gaithersburg, Maryland 20889-6102, United States,
| | - Lorenzo Guio
- Department
of Material Science and Engineering, University
of Washington, Box 352120, Seattle, Washington 98195-2120, United States
| | - Sage Scheiwiller
- Department
of Chemical Engineering, University of Washington, Box 351750, Seattle, Washington 98195-1750, United States
| | - Viktoria Pakhnyuk
- Department
of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
| | - Christine Luscombe
- Department
of Material Science and Engineering, University
of Washington, Box 352120, Seattle, Washington 98195-2120, United States,Department
of Chemistry, University of Washington, Box 351700, Seattle, Washington 98195-1700, United States
| | - Lilo D. Pozzo
- Department
of Chemical Engineering, University of Washington, Box 351750, Seattle, Washington 98195-1750, United States,
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3
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Iscen A, Forero-Martinez NC, Valsson O, Kremer K. Acrylic Paints: An Atomistic View of Polymer Structure and Effects of Environmental Pollutants. J Phys Chem B 2021; 125:10854-10865. [PMID: 34524824 PMCID: PMC8488938 DOI: 10.1021/acs.jpcb.1c05188] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Most of the artwork
and cultural heritage objects are stored in
museums under conditions that are difficult to monitor. While advanced
technologies aim to control and prevent the degradation of cultural
heritage objects in line with preventive conservation measures, there
is much to be learned in terms of the physical processes that lead
to the degradation of the synthetic polymers that form the basis of
acrylic paints largely used in contemporary art. In museums, stored
objects are often exposed to temperature and relative humidity fluctuations
as well as airborne pollutants such as volatile organic compounds
(VOCs). The glass transition of acrylic paints is below room temperature;
while low temperatures may cause cracking, at high temperatures the
sticky surface of the paint becomes vulnerable to pollutants. Here
we develop fully atomistic models to understand the structure of two
types of acrylic copolymers and their interactions with VOCs and water.
The structure and properties of acrylic copolymers are slighlty modified
by incorporation of a monomer with a longer side chain. With favorable
solvation free energies, once absorbed, VOCs and water interact with
the polymer side chains to form hydrogen bonds. The cagelike structure
of the polymers prevents the VOCs and water to diffuse freely below
the glass transition temperature. In addition, our model forms the
foundation for developing mesoscopic and continuum models that will
allow us to access longer time and length scales to further our understanding
of the degradation of artwork.
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Affiliation(s)
- Aysenur Iscen
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | | | - Omar Valsson
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Kurt Kremer
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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4
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Dubey V, Dueby S, Daschakraborty S. Breakdown of the Stokes-Einstein relation in supercooled water: the jump-diffusion perspective. Phys Chem Chem Phys 2021; 23:19964-19986. [PMID: 34515269 DOI: 10.1039/d1cp02202d] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Although water is the most ubiquitous liquid it shows many thermodynamic and dynamic anomalies. Some of the anomalies further intensify in the supercooled regime. While many experimental and theoretical studies have focused on the thermodynamic anomalies of supercooled water, fewer studies explored the dynamical anomalies very extensively. This is due to the intricacy of the experimental measurement of the dynamical properties of supercooled water. Violation of the Stokes-Einstein relation (SER), an important relation connecting the diffusion of particles with the viscosity of the medium, is one of the major dynamical anomalies. In absence of experimentally measured viscosity, researchers used to check the validity of SER indirectly using average translational relaxation time or α-relaxation time. Very recently, the viscosity of supercooled water was accurately measured at a wide range of temperatures and pressures. This allowed direct verification of the SER at different temperature-pressure thermodynamic state points. An increasing breakdown of the SER was observed with decreasing temperature. Increasing pressure reduces the extent of breakdown. Although some well-known theories explained the above breakdown, a detailed molecular mechanism was still elusive. Recently, a translational jump-diffusion (TJD) approach has been able to quantitatively explain the breakdown of the SER in pure supercooled water and an aqueous solution of methanol. The objective of this article is to present a detailed and state-of-the-art analysis of the past and present works on the breakdown of SER in supercooled water with a specific focus on the new TJD approach for explaining the breakdown of the SER.
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Affiliation(s)
- Vikas Dubey
- Department of Chemistry, Indian Institute of Technology Patna, Bihar 801106, India.
| | - Shivam Dueby
- Department of Chemistry, Indian Institute of Technology Patna, Bihar 801106, India.
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5
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Arbe A, Alvarez F, Colmenero J. Insight into the Structure and Dynamics of Polymers by Neutron Scattering Combined with Atomistic Molecular Dynamics Simulations. Polymers (Basel) 2020; 12:E3067. [PMID: 33371357 PMCID: PMC7767341 DOI: 10.3390/polym12123067] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/04/2020] [Accepted: 12/11/2020] [Indexed: 11/23/2022] Open
Abstract
Combining neutron scattering and fully atomistic molecular dynamics simulations allows unraveling structural and dynamical features of polymer melts at different length scales, mainly in the intermolecular and monomeric range. Here we present the methodology developed by us and the results of its application during the last years in a variety of polymers. This methodology is based on two pillars: (i) both techniques cover approximately the same length and time scales and (ii) the classical van Hove formalism allows easily calculating the magnitudes measured by neutron scattering from the simulated atomic trajectories. By direct comparison with experimental results, the simulated cell is validated. Thereafter, the information of the simulations can be exploited, calculating magnitudes that are experimentally inaccessible or extending the parameters range beyond the experimental capabilities. We show how detailed microscopic insight on structural features and dynamical processes of various kinds has been gained in polymeric systems with different degrees of complexity, and how intriguing questions as the collective behavior at intermediate length scales have been faced.
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Affiliation(s)
- Arantxa Arbe
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain; (A.A.); (F.A.)
| | - Fernando Alvarez
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain; (A.A.); (F.A.)
- Departamento de Polímeros y Materiales Avanzados, Física, Química y Tecnología (UPV/EHU), Apartado 1072, E-20080 San Sebastián, Spain
| | - Juan Colmenero
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain; (A.A.); (F.A.)
- Departamento de Polímeros y Materiales Avanzados, Física, Química y Tecnología (UPV/EHU), Apartado 1072, E-20080 San Sebastián, Spain
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, E-20018 San Sebastián, Spain
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6
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Gkourmpis T, Mitchell GR. The Use of Scattering Data in the Study of the Molecular Organisation of Polymers in the Non-Crystalline State. Polymers (Basel) 2020; 12:polym12122917. [PMID: 33291414 PMCID: PMC7762082 DOI: 10.3390/polym12122917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 11/28/2022] Open
Abstract
Scattering data for polymers in the non-crystalline state, i.e., the glassy state or the molten state, may appear to contain little information. In this work, we review recent developments in the use of scattering data to evaluate in a quantitative manner the molecular organization of such polymer systems. The focus is on the local structure of chain segments, on the details of the chain conformation and on the imprint the inherent chemical connectivity has on this structure. We show the value of tightly coupling the scattering data to atomistic-level computer models. We show how quantitative information about the details of the chain conformation can be obtained directly using a model built from definitions of relatively few parameters. We show how scattering data may be supplemented with data from specific deuteration sites and used to obtain information hidden in the data. Finally, we show how we can exploit the reverse Monte Carlo approach to use the data to drive the convergence of the scattering calculated from a 3d atomistic-level model with the experimental data. We highlight the importance of the quality of the scattering data and the value in using broad Q scattering data obtained using neutrons. We illustrate these various methods with results drawn from a diverse range of polymers.
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Affiliation(s)
- Thomas Gkourmpis
- Innovation & Technology, Borealis AB, SE-444 86 Stenungsund, Sweden
- Correspondence: ; Tel.: +46-303-205-576
| | - Geoffrey R. Mitchell
- Centre of Rapid and Sustainable Product Development, Polytechnic of Leiria, 2430-028 Marinha Grande, Portugal;
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7
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Gambino T, Shafqat N, Alegría A, Malicki N, Dronet S, Radulescu A, Nemkovski K, Arbe A, Colmenero J. Concentration Fluctuations and Nanosegregation in a Simplified Industrial Blend with Large Dynamic Asymmetry. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01376] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas Gambino
- Materials Physics Center (MPC), Centro de Fı́sica de Materiales (CSIC, UPV/EHU), Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain
- Manufacture Française des Pneumatiques MICHELIN, Site de Ladoux, 23 Place des Carmes Déchaux, F-63040 Clermont-Ferrand, Cedex 9, France
| | - Numera Shafqat
- Materials Physics Center (MPC), Centro de Fı́sica de Materiales (CSIC, UPV/EHU), Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain
- Manufacture Française des Pneumatiques MICHELIN, Site de Ladoux, 23 Place des Carmes Déchaux, F-63040 Clermont-Ferrand, Cedex 9, France
| | - Angel Alegría
- Materials Physics Center (MPC), Centro de Fı́sica de Materiales (CSIC, UPV/EHU), Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain
- Departamento de Fı́sica de Materiales, UPV/EHU, Apartado 1072, E-20018 San Sebastián, Spain
| | - Nicolas Malicki
- Manufacture Française des Pneumatiques MICHELIN, Site de Ladoux, 23 Place des Carmes Déchaux, F-63040 Clermont-Ferrand, Cedex 9, France
| | - Séverin Dronet
- Manufacture Française des Pneumatiques MICHELIN, Site de Ladoux, 23 Place des Carmes Déchaux, F-63040 Clermont-Ferrand, Cedex 9, France
| | - Aurel Radulescu
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85747 Garching, Germany
| | - Kirill Nemkovski
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85747 Garching, Germany
| | - Arantxa Arbe
- Materials Physics Center (MPC), Centro de Fı́sica de Materiales (CSIC, UPV/EHU), Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain
| | - Juan Colmenero
- Materials Physics Center (MPC), Centro de Fı́sica de Materiales (CSIC, UPV/EHU), Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain
- Departamento de Fı́sica de Materiales, UPV/EHU, Apartado 1072, E-20018 San Sebastián, Spain
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, E-20018 San Sebastián, Spain
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8
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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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9
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Romo-Uribe A. Viscoelasticity and microstructure of POSS-methyl methacrylate nanocomposites. Dynamics and entanglement dilution. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.06.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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F Behbahani A, Vaez Allaei SM, H Motlagh G, Eslami H, Harmandaris VA. Structure and dynamics of stereo-regular poly(methyl-methacrylate) melts through atomistic molecular dynamics simulations. SOFT MATTER 2018; 14:1449-1464. [PMID: 29393331 DOI: 10.1039/c7sm02008b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Poly(methyl-methacrylate), PMMA, is a disubstituted vinyl polymer whose properties depend significantly on its tacticity. Here we present a detailed study of the structure, conformation, and dynamics of syndiotactic, atactic, and isotactic PMMA melts at various temperatures (580, 550, 520, and 490 K) via all-atom molecular dynamics simulations. The calculated volumetric properties are close to experimental data. The Tg and chain dimensions of PMMA model systems are found to depend strongly on tacticity in agreement with experimental findings. The backbone bonds in trans (t), diads in tt, and inter-diads in t|t torsional states are the most populated for all PMMA stereo-chemistries and their fractions increase with the number of syndiotactic sequences. Also, the effective torsional barrier heights for the backbone, ester side group, and α-methyl group are larger for syndiotactic PMMA compared to the isotactic one. The structure of the PMMA chains is studied by computing the intra- and inter-chain static structure factors, S(q), and the radial pair distribution functions. In the first peak of S(q), both intra- and inter-chain components contribute, whereas the second and third peaks mainly come from inter- and intra-chain parts, respectively. For all PMMA stereo-isomers a clear tendency of ester-methyl groups to aggregate is observed. The local dynamics are studied by analyzing torsional autocorrelation functions for various dihedral angles. A wide spectrum of correlation times and different activation energies are observed for the motions of different parts of PMMA chains. The stereo-chemistry affects the backbone, ester side group, and α-methyl motions, whereas the ester-methyl rotation remains unaffected. The dynamic heterogeneity of the PMMA chains is also studied in detail for the different stereo-chemistries via the temperature dependence of the stretching exponent. Furthermore, the reorientational dynamics at the chain level and translational dynamics for monomer and chain centers-of-mass are analyzed.
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Affiliation(s)
- Alireza F Behbahani
- Advanced Polymer Materials and Processing Lab, School of Chemical Engineering, College of Engineering, University of Tehran, Tehran 11155-4563, Iran
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11
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Arbe A, Moreno AJ, Allgaier J, Ivanova O, Fouquet P, Colmenero J, Richter D. Role of Dynamic Asymmetry on the Collective Dynamics of Comblike Polymers: Insights from Neutron Spin-Echo Experiments and Coarse-Grained Molecular Dynamics Simulations. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00931] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Arantxa Arbe
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM), CSIC−UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- Jülich Centre for Neutron Science and Institut for Complex Systems, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
- Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at Heinz
Maier-Leibnitz Zentrum, Lichtenbergstr.1, 85747 Garching, Germany
- Institut Laue−Langevin, CS 20156, 38042 Grenoble, Cedex 9, France
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - Angel J. Moreno
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM), CSIC−UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- Jülich Centre for Neutron Science and Institut for Complex Systems, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
- Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at Heinz
Maier-Leibnitz Zentrum, Lichtenbergstr.1, 85747 Garching, Germany
- Institut Laue−Langevin, CS 20156, 38042 Grenoble, Cedex 9, France
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - Jürgen Allgaier
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM), CSIC−UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- Jülich Centre for Neutron Science and Institut for Complex Systems, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
- Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at Heinz
Maier-Leibnitz Zentrum, Lichtenbergstr.1, 85747 Garching, Germany
- Institut Laue−Langevin, CS 20156, 38042 Grenoble, Cedex 9, France
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - Oxana Ivanova
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM), CSIC−UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- Jülich Centre for Neutron Science and Institut for Complex Systems, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
- Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at Heinz
Maier-Leibnitz Zentrum, Lichtenbergstr.1, 85747 Garching, Germany
- Institut Laue−Langevin, CS 20156, 38042 Grenoble, Cedex 9, France
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - Peter Fouquet
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM), CSIC−UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- Jülich Centre for Neutron Science and Institut for Complex Systems, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
- Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at Heinz
Maier-Leibnitz Zentrum, Lichtenbergstr.1, 85747 Garching, Germany
- Institut Laue−Langevin, CS 20156, 38042 Grenoble, Cedex 9, France
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - Juan Colmenero
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM), CSIC−UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- Jülich Centre for Neutron Science and Institut for Complex Systems, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
- Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at Heinz
Maier-Leibnitz Zentrum, Lichtenbergstr.1, 85747 Garching, Germany
- Institut Laue−Langevin, CS 20156, 38042 Grenoble, Cedex 9, France
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
| | - Dieter Richter
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM), CSIC−UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
- Jülich Centre for Neutron Science and Institut for Complex Systems, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
- Jülich Centre for Neutron Science, Forschungszentrum Jülich GmbH, Outstation at Heinz
Maier-Leibnitz Zentrum, Lichtenbergstr.1, 85747 Garching, Germany
- Institut Laue−Langevin, CS 20156, 38042 Grenoble, Cedex 9, France
- Departamento de Física de Materiales, UPV/EHU, Apartado 1072, 20080 San Sebastián, Spain
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12
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Mehravar E, Iturrospe A, Arbe A, Asua JM, Leiza JR. Phase behavior of side-chain liquid-crystalline polymers containing biphenyl mesogens with different spacer lengths synthesized via miniemulsion polymerization. Polym Chem 2016. [DOI: 10.1039/c6py00791k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
High molar mass SCLCPs were synthesized by miniemulsion polymerization, and the phase behavior of the polymers was investigated by a combination of DSC, PLM, SAXS and WAXS.
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Affiliation(s)
- Ehsan Mehravar
- POLYMAT and Kimika Aplikatua Saila
- Kimika Zientzien Fakultatea
- University of the Basque Country UPV/EHU
- Joxe Mari Korta Zentroa
- Donostia-San Sebastian 20018
| | - Amaia Iturrospe
- Centro de Física de Materiales (CFM) (CSIC-UPV/EHU) and Materials Physics Center (MPC)
- E-20018 San Sebastian
- Spain
| | - Arantxa Arbe
- Centro de Física de Materiales (CFM) (CSIC-UPV/EHU) and Materials Physics Center (MPC)
- E-20018 San Sebastian
- Spain
| | - José M. Asua
- POLYMAT and Kimika Aplikatua Saila
- Kimika Zientzien Fakultatea
- University of the Basque Country UPV/EHU
- Joxe Mari Korta Zentroa
- Donostia-San Sebastian 20018
| | - Jose R. Leiza
- POLYMAT and Kimika Aplikatua Saila
- Kimika Zientzien Fakultatea
- University of the Basque Country UPV/EHU
- Joxe Mari Korta Zentroa
- Donostia-San Sebastian 20018
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13
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Tejero R, Arbe A, Fernández-García M, López D. Nanostructuration by Self-Assembly in N-Alkyl Thiazolium and Triazolium Side-Chain Polymethacrylates. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01734] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rubén Tejero
- Instituto de Ciencia y Tecnología de Polímeros
(ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Arantxa Arbe
- Materials Physics Center (MPC), Centro de Física de Materiales (CFM) (CSIC-UPV/EHU), Paseo de Manuel Lardizábal,
5, E-20018 San Sebastián, Spain
| | - Marta Fernández-García
- Instituto de Ciencia y Tecnología de Polímeros
(ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Daniel López
- Instituto de Ciencia y Tecnología de Polímeros
(ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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14
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Skountzos EN, Anastassiou A, Mavrantzas VG, Theodorou DN. Determination of the Mechanical Properties of a Poly(methyl methacrylate) Nanocomposite with Functionalized Graphene Sheets through Detailed Atomistic Simulations. Macromolecules 2014. [DOI: 10.1021/ma5017693] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Emmanuel N. Skountzos
- Department
of Chemical Engineering, University of Patras and FORTH-ICE/HT, GR 26504, Patras, Greece
| | - Alexandros Anastassiou
- Department
of Chemical Engineering, University of Patras and FORTH-ICE/HT, GR 26504, Patras, Greece
| | - Vlasis G. Mavrantzas
- Department
of Chemical Engineering, University of Patras and FORTH-ICE/HT, GR 26504, Patras, Greece
- Department
of Materials, Polymer Physics, ETH Zürich, HCI H 543, CH-8093 Zürich, Switzerland
| | - Doros N. Theodorou
- School
of Chemical Engineering, National Technical University of Athens, GR
15780, Athens, Greece
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15
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Li Z, Yuan F, Fichthorn KA, Milner ST, Larson RG. Molecular View of Polymer/Water Interfaces in Latex Paint. Macromolecules 2014. [DOI: 10.1021/ma500866f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zifeng Li
- Department
of Chemical Engineering, The Pennsylvania State University, 120
Fenske Laboratory, University Park, Pennsylvania 16802, United States
| | - Fang Yuan
- Department
of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kristen A. Fichthorn
- Department
of Chemical Engineering, The Pennsylvania State University, 120
Fenske Laboratory, University Park, Pennsylvania 16802, United States
| | - Scott T. Milner
- Department
of Chemical Engineering, The Pennsylvania State University, 120
Fenske Laboratory, University Park, Pennsylvania 16802, United States
| | - Ronald G. Larson
- Department
of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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16
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Wu C. Multiscale simulations of the structure and dynamics of stereoregular poly(methyl methacrylate)s. J Mol Model 2014; 20:2377. [DOI: 10.1007/s00894-014-2377-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Accepted: 07/07/2014] [Indexed: 10/25/2022]
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17
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Bhowmik D, Pomposo JA, Juranyi F, García Sakai V, Zamponi M, Arbe A, Colmenero J. Investigation of a Nanocomposite of 75 wt % Poly(methyl methacrylate) Nanoparticles with 25 wt % Poly(ethylene oxide) Linear Chains: A Quasielatic Neutron Scattering, Calorimetric, and WAXS Study. Macromolecules 2014. [DOI: 10.1021/ma500215f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- D. Bhowmik
- Donostia International Physics
Center, Paseo Manuel de Lardizabal
4, 20018 San Sebastián, Spain
| | - J. A. Pomposo
- Centro de Física de Materiales (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
- IKERBASQUE
- Basque Foundation for Science, Alameda
Urquijo 36, 48011 Bilbao, Spain
| | - F. Juranyi
- Laboratory for Neutron
Scattering, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
| | - V. García Sakai
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Science & Innovation Campus, Chilton, Didcot OX11 0QX, United Kingdom
| | - M. Zamponi
- Jülich
Centre for Neutron Science, Forschungszentrum Jülich GmbH, outstation at Heinz
Maier-Leibnitz Zentrum, Lichtenbergstr. 1, 85747 Garching, Germany
| | - A. Arbe
- Centro de Física de Materiales (CSIC−UPV/EHU)
− Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
| | - J. Colmenero
- Donostia International Physics
Center, Paseo Manuel de Lardizabal
4, 20018 San Sebastián, Spain
- Centro de Física de Materiales (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
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18
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Khairy Y, Alvarez F, Arbe A, Colmenero J. Collective Features in Polyisobutylene. A Study of the Static and Dynamic Structure Factor by Molecular Dynamics Simulations. Macromolecules 2013. [DOI: 10.1021/ma401669y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Y. Khairy
- Centro
de Física de Materiales (CSIC−UPV/EHU), Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
| | - F. Alvarez
- Centro
de Física de Materiales (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
| | - A. Arbe
- Centro
de Física de Materiales (CSIC−UPV/EHU), Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
| | - J. Colmenero
- Centro
de Física de Materiales (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
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain
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19
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Gerstl C, Brodeck M, Schneider GJ, Su Y, Allgaier J, Arbe A, Colmenero J, Richter D. Short and Intermediate Range Order in Poly(alkylene oxide)s. A Neutron Diffraction and Molecular Dynamics Simulation Study. Macromolecules 2012. [DOI: 10.1021/ma301197y] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. Gerstl
- Jülich Center for Neutron
Science and Institut for Complex Systems, Forschungszentrum Jülich GmbH, D−52425 Jülich, Germany
- Jülich Center for Neutron Science, Outstation at FRM II, 85747 Garching,
Germany
| | - M. Brodeck
- Jülich Center for Neutron
Science and Institut for Complex Systems, Forschungszentrum Jülich GmbH, D−52425 Jülich, Germany
| | - G. J. Schneider
- Jülich Center for Neutron Science, Outstation at FRM II, 85747 Garching,
Germany
| | - Y. Su
- Jülich Center for Neutron Science, Outstation at FRM II, 85747 Garching,
Germany
| | - J. Allgaier
- Jülich Center for Neutron
Science and Institut for Complex Systems, Forschungszentrum Jülich GmbH, D−52425 Jülich, Germany
| | - A. Arbe
- Centro de Física de Materiales (CSIC-UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain
| | - J. Colmenero
- Centro de Física de Materiales (CSIC-UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain
- Departamento de Física de Materiales (UPV/EHU), Apartado 1072,
20080 San Sebastián, Spain
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018
San Sebastián, Spain
| | - D. Richter
- Jülich Center for Neutron
Science and Institut for Complex Systems, Forschungszentrum Jülich GmbH, D−52425 Jülich, Germany
- Jülich Center for Neutron Science, Outstation at FRM II, 85747 Garching,
Germany
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20
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Dynamic crossover of the sub-Rouse modes in the glass–rubber transition region in poly(n-alkyl methacrylates) with different side chain lengths. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.04.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Gerstl C, Schneider GJ, Fuxman A, Zamponi M, Frick B, Seydel T, Koza M, Genix AC, Allgaier J, Richter D, Colmenero J, Arbe A. Quasielastic Neutron Scattering Study on the Dynamics of Poly(alkylene oxide)s. Macromolecules 2012. [DOI: 10.1021/ma3003399] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. Gerstl
- Jülich Centre
for Neutron Science (JCNS 1) and Institut for Complex Systems (ICS
1), Forschungszentrum Jülich GmbH, D−52425 Jülich, Germany
- Jülich Centre for Neutron Science (JCNS 1), Outstation at FRM II, 85747 Garching, Germany
| | - G. J. Schneider
- Jülich Centre for Neutron Science (JCNS 1), Outstation at FRM II, 85747 Garching, Germany
| | - A. Fuxman
- Jülich Centre for Neutron Science (JCNS 1), Outstation at FRM II, 85747 Garching, Germany
| | - M. Zamponi
- Jülich Centre for Neutron Science (JCNS 1), Outstation at FRM II, 85747 Garching, Germany
| | - B. Frick
- Institut Laue−Langevin, BP 156, 38042 Grenoble Cedex 9, France
| | - T. Seydel
- Institut Laue−Langevin, BP 156, 38042 Grenoble Cedex 9, France
| | - M. Koza
- Institut Laue−Langevin, BP 156, 38042 Grenoble Cedex 9, France
| | - A.-C. Genix
- Laboratoire Charles Coulomb, UMR 5221, CNRS and Université Montpellier 2, 34095 Montpellier,
France
| | - J. Allgaier
- Jülich Centre
for Neutron Science (JCNS 1) and Institut for Complex Systems (ICS
1), Forschungszentrum Jülich GmbH, D−52425 Jülich, Germany
| | - D. Richter
- Jülich Centre
for Neutron Science (JCNS 1) and Institut for Complex Systems (ICS
1), Forschungszentrum Jülich GmbH, D−52425 Jülich, Germany
- Jülich Centre for Neutron Science (JCNS 1), Outstation at FRM II, 85747 Garching, Germany
| | - J. Colmenero
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, E-20018 San
Sebastián, Spain
- Departamento de Física de Materiales (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián,
Spain
| | - A. Arbe
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, E-20018 San
Sebastián, Spain
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22
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Genix AC, Arbe A, Colmenero J, Wuttke J, Richter D. Neutron Scattering and X-ray Investigation of the Structure and Dynamics of Poly(ethyl methacrylate). Macromolecules 2012. [DOI: 10.1021/ma202653k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A.-C. Genix
- Laboratoire Charles Coulomb,
UMR 5221, CNRS, Université Montpellier 2, 34095 Montpellier, France
| | - A. Arbe
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal
5, E-20018 San Sebastián, Spain
| | - J. Colmenero
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal
5, E-20018 San Sebastián, Spain
- Departamento de Física de Materiales (UPV/EHU),
Apartado 1072, 20080 San Sebastián, Spain
- Donostia International Physics Center, Paseo
Manuel de Lardizabal 4, 20018 San Sebastián, Spain
| | - J. Wuttke
- Outstation at FRM II, Jülich
Center for Neutron Science JCNS 1, Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85747
Garching, Gemany
| | - D. Richter
- Jülich
Center for Neutron Science (JCNS 1) and Institut for Complex Systems
(ICS 1), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
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23
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Busselez R, Arbe A, Alvarez F, Colmenero J, Frick B. Study of the structure and dynamics of poly(vinyl pyrrolidone) by molecular dynamics simulations validated by quasielastic neutron scattering and x-ray diffraction experiments. J Chem Phys 2011; 134:054904. [DOI: 10.1063/1.3533771] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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24
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Bruni F, Mancinelli R, Ricci MA. Multiple relaxation processes versus the fragile-to-strong transition in confined water. Phys Chem Chem Phys 2011; 13:19773-9. [DOI: 10.1039/c1cp22029b] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Kirschner KN, Heikamp K, Reith D. Atomistic simulations of isotactic and atactic poly(methyl methacrylate) melts: exploring the backbone conformational space. MOLECULAR SIMULATION 2010. [DOI: 10.1080/08927020903536374] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Polymer-Infiltrated Aligned Carbon Nanotube Fibers by in situ Polymerization. Macromol Rapid Commun 2009; 30:1936-9. [DOI: 10.1002/marc.200900370] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2009] [Revised: 07/08/2009] [Indexed: 11/07/2022]
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27
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Brodeck M, Alvarez F, Arbe A, Juranyi F, Unruh T, Holderer O, Colmenero J, Richter D. Study of the dynamics of poly(ethylene oxide) by combining molecular dynamic simulations and neutron scattering experiments. J Chem Phys 2009; 130:094908. [DOI: 10.1063/1.3077858] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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28
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Tyagi M, Arbe A, Alvarez F, Colmenero J, González MA. Short-range order and collective dynamics of poly(vinyl acetate): A combined study by neutron scattering and molecular dynamics simulations. J Chem Phys 2008; 129:224903. [DOI: 10.1063/1.3028210] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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29
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Genix AC, Arbe A, Arrese-Igor S, Colmenero J, Richter D, Frick B, Deen PP. Neutron scattering investigation of a diluted blend of poly(ethylene oxide) in polyethersulfone. J Chem Phys 2008; 128:184901. [DOI: 10.1063/1.2918497] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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Li Q, Hua R, Cheah IJ, Chou KC. Surface Structure Relaxation of Poly(methyl methacrylate). J Phys Chem B 2007; 112:694-7. [DOI: 10.1021/jp072147j] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qifeng Li
- Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Rui Hua
- Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Ignatius J. Cheah
- Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
| | - Keng C. Chou
- Department of Chemistry, University of British Columbia, Vancouver, BC V6T 1Z1, Canada
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31
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Temleitner L, Pusztai L, Schweika W. The structure of liquid water by polarized neutron diffraction and reverse Monte Carlo modelling. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2007; 19:335207. [PMID: 21694130 DOI: 10.1088/0953-8984/19/33/335207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The coherent static structure factor of water has been investigated by polarized neutron diffraction. Polarization analysis allows us to separate the huge incoherent scattering background from hydrogen and to obtain high quality data of the coherent scattering from four different mixtures of liquid H(2)O and D(2)O. The information obtained by the variation of the scattering contrast confines the configurational space of water and is used by the reverse Monte Carlo technique to model the total structure factors. Structural characteristics have been calculated directly from the resulting sets of particle coordinates. Consistency with existing partial pair correlation functions, derived without the application of polarized neutrons, was checked by incorporating them into our reverse Monte Carlo calculations. We also performed Monte Carlo simulations of a hard sphere system, which provides an accurate estimate of the information content of the measured data. It is shown that the present combination of polarized neutron scattering and reverse Monte Carlo structural modelling is a promising approach towards a detailed understanding of the microscopic structure of water.
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Affiliation(s)
- László Temleitner
- Neutron Physics Laboratory, Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, POB 49, H-1525 Budapest, Hungary
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32
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Arrese-Igor S, Arbe A, Alegría A, Colmenero J, Frick B. Phenylene ring dynamics in phenoxy and the effect of intramolecular linkages on the dynamics of some engineering thermoplastics below the glass transition temperature. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2007; 75:051801. [PMID: 17677087 DOI: 10.1103/physreve.75.051801] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2006] [Indexed: 05/16/2023]
Abstract
We have investigated the dynamics of phenylene rings in the engineering thermoplastic bisphenol-A poly(hydroxyether) -- phenoxy -- below its glass transition temperature by means of neutron scattering techniques. A relatively wide dynamic range has been covered thanks to the combination of two different types of neutron spectrometers, time of flight and backscattering. Partially deuterated samples have been used in order to isolate the phenylene ring dynamics. The resulting neutron scattering signal of phenoxy has been described by a model that considers pi flips and oscillation motions for phenylene rings. The associated time scales are broadly distributed with mean activation energies equal to 0.41 and 0.21eV , respectively. Finally, a comparative study with the literature shows that the dielectric and mechanical gamma relaxation in phenoxy exhibit good correlation with the characteristic times of the aliphatic chain published elsewhere and with the characteristic times observed for the motion of phenylene rings by neutron scattering. These findings are discussed in a more general framework that considers, in addition, previous results on other polymers, which also contain the bisphenol-A unit.
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Affiliation(s)
- Silvia Arrese-Igor
- Centro Física de Materiales (CSIC-UPV/EHU), Apartado 1072, San Sebastián, Spain
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33
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Cerveny S, Colmenero J, Alegría A. Comment on "Pressure dependence of fragile-to-strong transition and a possible second critical point in supercooled confined water". PHYSICAL REVIEW LETTERS 2006; 97:189802; discussion 189803. [PMID: 17155593 DOI: 10.1103/physrevlett.97.189802] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2005] [Indexed: 05/12/2023]
Affiliation(s)
- Silvina Cerveny
- Donostia International Physics Center P. Manuel de Lardizabal 4 20018, San Sebastián, Spain.
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34
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Genix AC, Arbe A, Alvarez F, Colmenero J, Farago B, Wischnewski A, Richter D. Self- and Collective Dynamics of Syndiotactic Poly(methyl methacrylate). A Combined Study by Quasielastic Neutron Scattering and Atomistic Molecular Dynamics Simulations. Macromolecules 2006. [DOI: 10.1021/ma0607719] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A.-C. Genix
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Unidad Física de Materiales (CSIC−UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Departamento de Física de Materiales (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; and Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - A. Arbe
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Unidad Física de Materiales (CSIC−UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Departamento de Física de Materiales (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; and Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - F. Alvarez
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Unidad Física de Materiales (CSIC−UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Departamento de Física de Materiales (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; and Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - J. Colmenero
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Unidad Física de Materiales (CSIC−UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Departamento de Física de Materiales (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; and Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - B. Farago
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Unidad Física de Materiales (CSIC−UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Departamento de Física de Materiales (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; and Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - A. Wischnewski
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Unidad Física de Materiales (CSIC−UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Departamento de Física de Materiales (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; and Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
| | - D. Richter
- Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain; Unidad Física de Materiales (CSIC−UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Departamento de Física de Materiales (UPV/EHU), Apartado 1072, 20080 San Sebastián, Spain; Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9, France; and Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
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