1
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Analysis of the glass effect and Trommsdorff effect during bulk polymerization of methyl methacrylate, ethyl methacrylate, and butyl methacrylate. Polym J 2023. [DOI: 10.1038/s41428-022-00746-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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2
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Suzuki Y, Kano T, Tomii T, Tsuji N, Matsumoto A. Relaxation and Amorphous Structure of Polymers Containing Rigid Fumarate Segments. Polymers (Basel) 2022; 14:polym14224876. [PMID: 36433003 PMCID: PMC9692691 DOI: 10.3390/polym14224876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/08/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
The physical properties of polymers are significantly affected by relaxation processes. Recently, we reported that poly(diethyl fumarate) (PDEF) shows two thermal anomalies on DSC measurement, despite the fact that it is a homopolymer. We attribute these two relaxations α relaxation and β relaxation, respectively. In this study, we investigate the two relaxations of fumarate-containing polymers by DSC, solid-state NMR, and X-ray scattering. The two relaxations are present even in a copolymer of diethyl fumarate and ethyl acrylate with fumarate segments of 30%. We used poly(methyl methacrylate) (PMMA) as a model polymer for comparison, since there are detailed investigations of its dynamics and physical properties. Solid-state NMR indicates that the very local relaxation of poly(fumarate)s is not significantly different from that of PMMA. The tensile test showed that PDEF is still brittle at above β relaxation temperature and below α relaxation temperature. It was revealed that a structural anisotropy appeared when PDEF was extended at around α relaxation temperature. We discuss the effect of the glassy packing of the rigid polymer chain including the DEF segments on the strong β relaxation behavior. Our data provide insight into the microscopic mechanism of β relaxation of vinyl polymers.
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Affiliation(s)
- Yasuhito Suzuki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
- Correspondence: (Y.S.); (A.M.)
| | - Takahito Kano
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Tsuyoshi Tomii
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Nagisa Tsuji
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Akikazu Matsumoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
- Correspondence: (Y.S.); (A.M.)
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3
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Structure change of atactic polystyrene upon aging. J Appl Polym Sci 2022. [DOI: 10.1002/app.53177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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4
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McKenzie I, Fujimoto D, Karner VL, Li R, MacFarlane WA, McFadden RML, Morris GD, Pearson MR, Raegen AN, Stachura M, Ticknor JO, Forrest JA. A β-NMR study of the depth, temperature, and molecular-weight dependence of secondary dynamics in polystyrene: Entropy–enthalpy compensation and dynamic gradients near the free surface. J Chem Phys 2022; 156:084903. [DOI: 10.1063/5.0081185] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We investigated the depth, temperature, and molecular-weight (MW) dependence of the γ-relaxation in polystyrene glasses using implanted 8Li+ and β-detected nuclear magnetic resonance. Measurements were performed on thin films with MW ranging from 1.1 to 641 kg/mol. The temperature dependence of the average 8Li spin–lattice relaxation time [Formula: see text] was measured near the free surface and in the bulk. Spin–lattice relaxation is caused by phenyl ring flips, which involve transitions between local minima over free-energy barriers with enthalpic and entropic contributions. We used transition state theory to model the temperature dependence of the γ-relaxation, and hence [Formula: see text]. There is no clear correlation of the average entropy of activation [Formula: see text] and enthalpy of activation [Formula: see text] with MW, but there is a clear correlation between [Formula: see text] and [Formula: see text], i.e., entropy–enthalpy compensation. This results in the average Gibbs energy of activation, [Formula: see text], being approximately independent of MW. Measurements of the temperature dependence of [Formula: see text] as a function of depth below the free surface indicate the inherent entropic barrier, i.e., the entropy of activation corresponding to [Formula: see text] = 0, has an exponential dependence on the distance from the free surface before reaching the bulk value. This results in [Formula: see text] near the free surface being lower than the bulk. Combining these observations results in a model where the average fluctuation rate of the γ-relaxation has a “double-exponential” depth dependence. This model can explain the depth dependence of [Formula: see text] in polystyrene films. The characteristic length of enhanced dynamics is ∼6 nm and approximately independent of MW near room temperature.
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Affiliation(s)
- Iain McKenzie
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Derek Fujimoto
- Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
- Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Victoria L. Karner
- Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Ruohong Li
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
| | - W. Andrew MacFarlane
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
- Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Ryan M. L. McFadden
- Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | | | - Matthew R. Pearson
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - Adam N. Raegen
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | | | - John O. Ticknor
- Stewart Blusson Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - James A. Forrest
- Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
- Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5, Canada
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5
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Wang C, Weck M. Intramolecular Folding of Coil-Helix Block Copolymers Induced by Quadrupole Interactions. Macromol Rapid Commun 2021; 42:e2100368. [PMID: 34242455 DOI: 10.1002/marc.202100368] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 06/30/2021] [Indexed: 11/12/2022]
Abstract
True tertiary architectures with defined local secondary structures are rare in synthetic systems. Adapting well-developed synthetic building blocks and controlling their folding through diverse interactions can be a general approach toward this goal. In this contribution, the synthesis of 3D hierarchical assemblies with distinct secondary domains formed through the intramolecular folding of a block copolymer containing a coil-like poly(styrene) (PS) block with a helical poly(isocyanide) block induced by phenyl-pentafluorophenyl quadrupole interactions is reported. The PS block is prepared via atom-transfer radical polymerization and end functionalized with a nickel complex that serves as a macroinitiator for the polymerization of chiral isocyanides bearing pentafluorophenyl pendants. The folding behavior of the coil-helix block copolymers is investigated by dynamic light scattering, NMR spectroscopy, wide-angle X-ray scattering, and differential scanning calorimetry.
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Affiliation(s)
- Chengyuan Wang
- Molecular Design Institute and Department of Chemistry, New York University, New York, NY, 10003, USA
| | - Marcus Weck
- Molecular Design Institute and Department of Chemistry, New York University, New York, NY, 10003, USA
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6
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Zuo B, Li C, Xu Q, Randazzo K, Jiang N, Wang X, Priestley RD. Ultrastable Glassy Polymer Films with an Ultradense Brush Morphology. ACS NANO 2021; 15:9568-9576. [PMID: 34032418 DOI: 10.1021/acsnano.0c09631] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Glassy polymer films with extreme stability could enable major advancements in a range of fields that require the use of polymers in confined environments. Yet, from a materials design perspective, we now know that the glass transition temperature (Tg) and thermal expansion of polymer thin films can be dramatically different from those characteristics of the bulk, i.e., exhibiting confinement-induced diminished thermal stability. Here, we demonstrate that polymer brushes with an ultrahigh grafting density, i.e., an ultradense brush morphology, exhibit a significant enhancement in thermal stability, as manifested by an exceptionally high Tg and low expansivity. For instance, a 5 nm thick polystyrene brush film exhibits an ∼75 K increase in Tg and ∼90% reduction in expansivity compared to a spin-cast film of similar thickness. Our results establish how morphology can overcome confinement and interfacial effects in controlling thin-film material properties and how this can be achieved by the dense packing and molecular ordering in the amorphous state of ultradense brushes prepared by surface-initiated atom transfer radical polymerization in combination with a self-assembled monolayer of initiators.
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Affiliation(s)
| | | | - Quanyin Xu
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Katelyn Randazzo
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Naisheng Jiang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | | | - Rodney D Priestley
- Department of Chemical and Biological Engineering, Princeton University, Princeton, New Jersey 08544, United States
- Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544, United States
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7
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Beyer FL, Masser KA, Lenhart JL. Application of the small‐angle scattering invariant to morphological behavior in ballistic materials. J Appl Polym Sci 2021. [DOI: 10.1002/app.50478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Kevin A. Masser
- U.S. Army Research Laboratory Aberdeen Proving Ground Maryland USA
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8
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Suzuki Y, Shinagawa Y, Kato E, Mishima R, Fukao K, Matsumoto A. Polymerization-Induced Vitrification and Kinetic Heterogenization at the Onset of the Trommsdorff Effect. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02260] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yasuhito Suzuki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Yuya Shinagawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Eri Kato
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Ryutaro Mishima
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Koji Fukao
- Department of Physics, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga 525-8577, Japan
| | - Akikazu Matsumoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
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9
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López‐Barrón CR. Chain structure, linear viscoelasticity and extensional rheology of poly(4‐vinyl biphenyl‐stat‐styrene) statistical copolymers. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Wolf CM, Guio L, Scheiwiller SC, O’Hara RP, Luscombe CK, Pozzo LD. Blend Morphology in Polythiophene–Polystyrene Composites from Neutron and X-ray Scattering. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02512] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Caitlyn M. Wolf
- Department of Chemical Engineering, University of Washington, Box 351750, Seattle, Washington 98195-1750, United States
| | - Lorenzo Guio
- Department of Material Science and Engineering, University of Washington, Box 352120, Seattle, Washington 98195-2120, United States
| | - Sage C. Scheiwiller
- Department of Chemical Engineering, University of Washington, Box 351750, Seattle, Washington 98195-1750, United States
| | - Ryan P. O’Hara
- Department of Chemical Engineering, University of Washington, Box 351750, Seattle, Washington 98195-1750, United States
| | - Christine K. Luscombe
- Department of Material Science and Engineering, University of Washington, Box 352120, Seattle, Washington 98195-2120, United States
| | - Lilo D. Pozzo
- Department of Chemical Engineering, University of Washington, Box 351750, Seattle, Washington 98195-1750, United States
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11
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Eastmond T, Hu J, Alizadeh V, Hrubiak R, Oswald J, Amirkhizi A, Peralta P. Probing High-Pressure Structural Evolution in Polyurea with In Situ Energy-Dispersive X-ray Diffraction and Molecular Dynamics Simulations. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02266] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tyler Eastmond
- Mechanical and Aerospace Engineering, Arizona State University, 501 E Tyler Mall, Tempe, Arizona 85287, United States
| | - Jing Hu
- Mechanical and Aerospace Engineering, Arizona State University, 501 E Tyler Mall, Tempe, Arizona 85287, United States
| | - Vahidreza Alizadeh
- Department of Mechanical Engineering, University of Massachusetts Lowell, Dandeneau Hall
219, 1 University Ave, Lowell, Massachusetts 01854, United States
| | - Rostislav Hrubiak
- High Pressure Collaborative Access Team, X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Jay Oswald
- Mechanical and Aerospace Engineering, Arizona State University, 501 E Tyler Mall, Tempe, Arizona 85287, United States
| | - Alireza Amirkhizi
- Department of Mechanical Engineering, University of Massachusetts Lowell, Dandeneau Hall
219, 1 University Ave, Lowell, Massachusetts 01854, United States
| | - Pedro Peralta
- Mechanical and Aerospace Engineering, Arizona State University, 501 E Tyler Mall, Tempe, Arizona 85287, United States
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12
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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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13
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Jiao G, Zuo T, Ma C, Han Z, Zhang J, Chen Y, Zhao J, Cheng H, Han CC. 3d Most-Probable All-Atom Structure of Atactic Polystyrene During Glass Formation: A Neutron Total Scattering Study. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guisheng Jiao
- China Spallation Neutron Source (CSNS), Institute of High Energy Physics (IHEP), Chinese Academy of Science(CAS), Dongguan 523803, China
- Spallation Neutron Source Science Center, Dongguan 523803, China
| | - Taisen Zuo
- China Spallation Neutron Source (CSNS), Institute of High Energy Physics (IHEP), Chinese Academy of Science(CAS), Dongguan 523803, China
- Spallation Neutron Source Science Center, Dongguan 523803, China
| | - Changli Ma
- China Spallation Neutron Source (CSNS), Institute of High Energy Physics (IHEP), Chinese Academy of Science(CAS), Dongguan 523803, China
- Spallation Neutron Source Science Center, Dongguan 523803, China
| | - Zehua Han
- China Spallation Neutron Source (CSNS), Institute of High Energy Physics (IHEP), Chinese Academy of Science(CAS), Dongguan 523803, China
- Spallation Neutron Source Science Center, Dongguan 523803, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Junrong Zhang
- China Spallation Neutron Source (CSNS), Institute of High Energy Physics (IHEP), Chinese Academy of Science(CAS), Dongguan 523803, China
- Spallation Neutron Source Science Center, Dongguan 523803, China
| | - Ye Chen
- Faculty of Material Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Junpeng Zhao
- Faculty of Material Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - He Cheng
- China Spallation Neutron Source (CSNS), Institute of High Energy Physics (IHEP), Chinese Academy of Science(CAS), Dongguan 523803, China
- Spallation Neutron Source Science Center, Dongguan 523803, China
| | - Charles C. Han
- Institute for Advanced Study, Shenzhen University, Shenzhen 508060, China
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14
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Ricci E, Vergadou N, Vogiatzis GG, De Angelis MG, Theodorou DN. Molecular Simulations and Mechanistic Analysis of the Effect of CO 2 Sorption on Thermodynamics, Structure, and Local Dynamics of Molten Atactic Polystyrene. Macromolecules 2020; 53:3669-3689. [PMID: 33828339 PMCID: PMC8016389 DOI: 10.1021/acs.macromol.0c00323] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 04/21/2020] [Indexed: 11/30/2022]
Abstract
A simulation strategy encompassing different scales was applied to the systematic study of the effects of CO2 uptake on the properties of atactic polystyrene (aPS) melts. The analysis accounted for the influence of temperature between 450 and 550 K, polymer molecular weights (M w) between 2100 and 31000 g/mol, and CO2 pressures up to 20 MPa on the volumetric, swelling, structural, and dynamic properties of the polymer as well as on the CO2 solubility and diffusivity by performing molecular dynamics (MD) simulations of the system in a fully atomistic representation. A hierarchical scheme was used for the generation of the higher M w polymer systems, which consisted of equilibration at a coarse-grained level of representation through efficient connectivity-altering Monte Carlo simulations, and reverse-mapping back to the atomistic representation, obtaining the configurations used for subsequent MD simulations. Sorption isotherms and associated swelling effects were determined by using an iterative procedure that incorporated a series of MD simulations in the NPT ensemble and the Widom test particle insertion method, while CO2 diffusion coefficients were extracted from long MD runs in the NVE ensemble. Solubility and diffusivity compared favorably with experimental results and with predictions of the Sanchez-Lacombe equation of state, which was reparametrized to capture the M w dependence of polymer properties with greater accuracy. Structural features of the polymer matrix were correctly reproduced by the simulations, and the effects of gas concentration and M w on structure and local dynamics were thoroughly investigated. In the presence of CO2, a significant acceleration of the segmental dynamics of the polymer occurred, more pronouncedly at low M w. The speed-up effect caused by the swelling agent was not limited to the chain ends but affected the whole chain in a similar fashion.
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Affiliation(s)
- Eleonora Ricci
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Bologna, Italy
| | - Niki Vergadou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Athens, Greece
| | - Georgios G Vogiatzis
- Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
| | - Maria Grazia De Angelis
- Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, Bologna, Italy
| | - Doros N Theodorou
- School of Chemical Engineering, National Technical University of Athens, Athens, Greece
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15
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16
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López-Barrón CR, Burghardt WR, Kweon MS. Local and Global Stretching of Polymer Chains during Startup of Extensional Flow. ACS Macro Lett 2020; 9:26-31. [PMID: 35638655 DOI: 10.1021/acsmacrolett.9b00772] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The nonlinear rheological response to extensional flows in entangled polymers is related to the segmental chain stretching and to the chemical identity of the monomeric units. The latter has a strong effect on the drag coefficients, and therefore, quantification of molecular conformation changes in the subnanometer scale (at the monomer level) are crucial to fully understand nonlinear viscoelastic behavior in polymer melts. We report in situ time-resolved extensional rheo-small-angle neutron scattering (tEr-SANS) and wide-angle X-ray scattering (tEr-WAXS) during startup of uniaxial flow on a monodisperse polystyrene melt. Flow-induced segmental alignment was quantified with tEr-SANS, whereas local alignment of the backbone-backbone and phenyl-phenyl interactions were measured with tEr-WAXS. Linear relations between the three alignment factors and stress were observed at low stresses, which confirmed the validity of simple stress-SANS and stress-WAXS rules (SSR and SWR, respectively). Significant differences in SSR and SWR coefficients, as well as the stress values for failure of the two rules suggest very different correlations between global (at the segmental level) and local (at the monomer level) conformations with stress.
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Affiliation(s)
| | - Wesley R. Burghardt
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Mu Sung Kweon
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
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17
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López-Barrón CR, Tsou AH, Hagadorn JR, Throckmorton JA. Highly Entangled α-Olefin Molecular Bottlebrushes: Melt Structure, Linear Rheology, and Interchain Friction Mechanism. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01431] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | - Andy H. Tsou
- ExxonMobil Chemical Company, Baytown, Texas 77520, United States
| | - John R. Hagadorn
- ExxonMobil Chemical Company, Baytown, Texas 77520, United States
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18
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Healy J, Knott R, Edward G. Residual orientation in injection-moulded plaques of atactic-polystyrene I: The effect of processing conditions. POLYM ENG SCI 2018. [DOI: 10.1002/pen.24710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- John Healy
- Materials Science and Engineering, Faculty of Engineering; Monash University; Victoria 3800 Australia
| | - Robert Knott
- Australian Nuclear Science and Technology Organisation; Kirrawee NSW 2232 Australia
| | - Graham Edward
- Materials Science and Engineering, Faculty of Engineering; Monash University; Victoria 3800 Australia
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19
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Ren KX, Jia XM, Jiao GS, Chen T, Qian HJ, Lu ZY. Interfacial Properties and Hopping Diffusion of Small Nanoparticle in Polymer/Nanoparticle Composite with Attractive Interaction on Side Group. Polymers (Basel) 2018; 10:E598. [PMID: 30966632 PMCID: PMC6403981 DOI: 10.3390/polym10060598] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/21/2018] [Accepted: 05/25/2018] [Indexed: 12/03/2022] Open
Abstract
The diffusion dynamics of fullerene (C 60 ) in unentangled linear atactic polystyrene (PS) and polypropylene (PP) melts and the structure and dynamic properties of polymers in interface area are investigated by performing all-atom molecular dynamics simulations. The comparison of the results in two systems emphasises the influence of local interactions exerted by polymer side group on the diffusion dynamics of the nanoparticle. In the normal diffusive regime at long time scales, the displacement distribution function (DDF) follows a Gaussian distribution in PP system, indicating a normal diffusion of C 60 . However, we observe multiple peaks in the DDF curve for C 60 diffusing in PS melt, which indicates a diffusion mechanism of hopping of C 60 . The attractive interaction between C 60 and phenyl ring side groups are found to be responsible for the observed hopping diffusion. In addition, we find that the C 60 is dynamically coupled with a subsection of a tetramer on PS chain, which has a similar size with C 60 . The phenyl ring on PS chain backbone tends to have a parallel configuration in the vicinity of C 60 surface, therefore neighbouring phenyl rings can form chelation effect on the C 60 surface. Consequently, the rotational dynamics of phenyl ring and the translational diffusion of styrene monomers are found to be slowed down in this interface area. We hope our results can be helpful for understanding of the influence of the local interactions on the nanoparticle diffusion dynamics and interfacial properties in polymer/nanoparticle composites.
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Affiliation(s)
- Kai-Xin Ren
- State Key Laboratory of Supramolecular Structure and Materials, and Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China.
| | - Xiang-Meng Jia
- State Key Laboratory of Supramolecular Structure and Materials, and Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China.
| | - Gui-Sheng Jiao
- State Key Laboratory of Supramolecular Structure and Materials, and Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China.
| | - Tao Chen
- State Key Laboratory of Supramolecular Structure and Materials, and Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China.
| | - Hu-Jun Qian
- State Key Laboratory of Supramolecular Structure and Materials, and Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China.
| | - Zhong-Yuan Lu
- State Key Laboratory of Supramolecular Structure and Materials, and Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China.
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20
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López-Barrón CR, Zhou H, Younker JM, Mann JA. Molecular Structure, Chain Dimensions, and Linear Rheology of Poly(4-vinylbiphenyl). Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01564] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Huaxing Zhou
- ExxonMobil
Research
and Engineering Company, Annandale, New Jersey 08801, United States
| | - Jarod M. Younker
- ExxonMobil Chemical
Company, Baytown, Texas 77520, United States
| | - Jason A. Mann
- ExxonMobil Chemical
Company, Baytown, Texas 77520, United States
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21
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Improving electrodialysis based water desalination using a sulfonated Diels-Alder poly(phenylene). J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.03.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Chiba A, Inui M, Kajihara Y, Fuchizaki K, Akiyama R. Isotactic poly(4-methyl-1-pentene) melt as a porous liquid: Reduction of compressibility due to penetration of pressure medium. J Chem Phys 2017; 146:194503. [PMID: 28527460 DOI: 10.1063/1.4983508] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A pressure-induced structural change of a polymer isotactic poly(4-methyl-1-pentene) (P4MP1) in the melted state at 270 °C has been investigated by high-pressure in situ x-ray diffraction, where high pressures up to 1.8 kbar were applied using helium gas. The first sharp diffraction peak (FSDP) position of the melt shows a less pressure dependence than that of the normal compression using a solid pressure transmitting medium. The contraction using helium gas was about 10% at 2 kbar, smaller than about 20% at the same pressure using a solid medium. The result indicates that helium entered the interstitial space between the main chains. The helium/monomer molar ratio was estimated to be 0.3 at 2 kbar from the FSDP positions. These results suggest that the compressibility of the P4MP1 melt can be largely dependent on the pressure transmitting media. As the pore size is reversibly and continuously controllable by compression, we suggest that the P4MP1 melt can be an ideal porous liquid for investigating a novel mechanical response of the pores in a non-crystalline substance.
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Affiliation(s)
- Ayano Chiba
- Department of Physics, Keio University, Yokohama 223-8522, Japan
| | - Masanori Inui
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8521, Japan
| | - Yukio Kajihara
- Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8521, Japan
| | | | - Ryo Akiyama
- Department of Chemistry, Kyushu University, Fukuoka 819-0395, Japan
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23
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Largier T, Huang F, Cornelius CJ. Homopolymer and multi-block Diels-Alder polyphenylenes: Synthesis, physical properties, X-ray diffraction, and gas transport. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.02.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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24
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Wei C, Esposito D, Tauer K. Thermal properties of thermoplastic polymers: Influence of polymer structure and procedure of radical polymerization. Polym Degrad Stab 2016. [DOI: 10.1016/j.polymdegradstab.2016.07.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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25
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Habibpour S, Zabihirad J, Mohammadi N, Mohammadi H. Modeling of polystyrenic nanoparticles driven β-trans-crystalline efficiency in isotactic polypropylene. RSC Adv 2016. [DOI: 10.1039/c6ra12219a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Addition of four styrenic soft nano-particles induced relative β-polymorphism as much as 20, 27, 34 and 10% during 10 minutes annealing of iPP at 116 °C. The kinetic and thermodynamic aspects of the phenomenon rationalized by a bi-exponential function
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Affiliation(s)
- S. Habibpour
- Nano and Smart Polymers Center of Excellence
- Department of Polymer Engineering and Color Technology
- Amirkabir University of Technology
- Tehran
- Iran
| | - J. Zabihirad
- Nano and Smart Polymers Center of Excellence
- Department of Polymer Engineering and Color Technology
- Amirkabir University of Technology
- Tehran
- Iran
| | - N. Mohammadi
- Nano and Smart Polymers Center of Excellence
- Department of Polymer Engineering and Color Technology
- Amirkabir University of Technology
- Tehran
- Iran
| | - H. Mohammadi
- Nano and Smart Polymers Center of Excellence
- Department of Polymer Engineering and Color Technology
- Amirkabir University of Technology
- Tehran
- Iran
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26
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Correlation between fragility and cooperativity in segmental dynamics of glass-forming para-substituted polystyrenes. Polym J 2015. [DOI: 10.1038/pj.2015.50] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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27
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Xu Q, Chen L. Integral equation theory for atactic polystyrene nanocomposite melts with a multi-site model. J Chem Phys 2014; 140:234901. [PMID: 24952562 DOI: 10.1063/1.4882355] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this work, a multi-site chain model was incorporated into the polymer reference interaction site model to investigate the structure and properties of atactic polystyrene (aPS) melt and the structural correlations of dilute spherical nanoparticles dissolved in aPS melt. The theoretically calculated X-ray scattering intensities, solubility parameters and intermolecular correlation functions of aPS and its nanocomposites are found to be in agreement with the corresponding molecular simulation and experimental data. The theory was further employed to investigate the distribution functions of different size effects of aPS-nanoparticle system with consideration of the potential of mean force and depletion force. The aggregation of large nanoparticles increases with the increase of the nanoparticle-site size ratio in the infinitely dilute limit. The results show that the present theory can be used to investigate the structure of aPS melt and its nanocomposite, and give a further understanding of the filler dispersion and aggregation. All the observations indicate molecular-level details of the underlying mechanisms, providing useful information for the future design control of new aPS-nanocomposite materials with tailored properties.
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Affiliation(s)
- Qinzhi Xu
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
| | - Lan Chen
- Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China
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28
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Abbott LJ, Hughes JE, Colina CM. Virtual Synthesis of Thermally Cross-Linked Copolymers from a Novel Implementation of Polymatic. J Phys Chem B 2014; 118:1916-24. [DOI: 10.1021/jp409664d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Lauren J. Abbott
- Department
of Materials Science
and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Justin E. Hughes
- Department
of Materials Science
and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Coray M. Colina
- Department
of Materials Science
and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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29
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Xie SJ, Qian HJ, Lu ZY. The influence of internal rotational barriers and temperature on static and dynamic properties of bulk atactic polystyrene. J Chem Phys 2012; 137:244903. [DOI: 10.1063/1.4772404] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [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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Faiz R, Li K. Olefin/paraffin separation using membrane based facilitated transport/chemical absorption techniques. Chem Eng Sci 2012. [DOI: 10.1016/j.ces.2012.01.037] [Citation(s) in RCA: 136] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Chiba A, Funamori N, Nakayama K, Ohishi Y, Bennington SM, Rastogi S, Shukla A, Tsuji K, Takenaka M. Pressure-induced structural change of intermediate-range order in poly(4-methyl-1-pentene) melt. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2012; 85:021807. [PMID: 22463236 DOI: 10.1103/physreve.85.021807] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Revised: 01/01/2012] [Indexed: 05/31/2023]
Abstract
High-pressure in situ x-ray diffraction and specific-volume measurements on isotactic poly(4-methyl-1-pentene) melt have uncovered abrupt changes in the pressure dependence of microscopic structure as well as that of macroscopic density. The first sharp diffraction peak of the polymer melt, which is related to the intermediate-range order and is explained as resulting from the correlations between main chains, is suppressed at pressures less than 1 kbar. These changes in intermediate-range order show similarities to those seen in liquid-liquid or amorphous-amorphous transitions in simpler small molecule based systems, suggesting that this kind of phenomenon may occur in a wide range of materials.
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Affiliation(s)
- Ayano Chiba
- Department of Physics, Keio University, Yokohama 223-8522, Japan.
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32
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Dumitriu RP, Mitchell GR, Vasile C. Rheological and thermal behaviour of poly(N
-isopropylacrylamide)/alginate smart polymeric networks. POLYM INT 2011. [DOI: 10.1002/pi.3093] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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34
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Ismayil, Ravindrachary V, Bhajantri R, Praveena S, Poojary B, Dutta D, Pujari P. Optical and microstructural studies on electron irradiated PMMA: A positron annihilation study. Polym Degrad Stab 2010. [DOI: 10.1016/j.polymdegradstab.2010.02.031] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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35
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36
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Kusuma VA, Matteucci S, Freeman BD, Danquah MK, Kalika DS. Influence of phenoxy-terminated short-chain pendant groups on gas transport properties of cross-linked poly(ethylene oxide) copolymers. J Memb Sci 2009. [DOI: 10.1016/j.memsci.2009.05.043] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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37
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Atorngitjawat P, Klein RJ, McDermott AG, Masser KA, Painter PC, Runt J. Dynamics of concentrated solutions of low molecular weight phenolics and poly(2-vinylpyridine): Role of intermolecular hydrogen bonding. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.02.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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38
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Synthesis and Characterization of Isophthalic Polyesters and Copolyesters based on 2,4-Dihydroxybenzophenone and 4,4’-(hexafluoroisopropylidene)diphenol. HIGH PERFORM POLYM 2009. [DOI: 10.1177/0954008308101197] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Two aromatic isophthalic polyesters and three copolyesters were synthesized by interfacial polycondensation using 2,4-dihydroxybenzophenone (2,4-DBP) and 4,4'-(hexafluoroisopropylidene)diphenol (HFD) with isophthaloyl chloride (ISO). All polymers were soluble in common chlorinated solvents. These aromatic polyesters and copolyesters were characterized by infrared and nuclear magnetic resonance spectroscopy. Their thermal, dynamic mechanical and physical properties were also determined. The glass transition temperature, onset of decomposition, and thermal stability of the homopolymer, poly(hexafluoroisopropilydene)isophthalate (HFD/ISO), were higher than those of homopolymer poly(2,4-benzophenone)isophthalate (2,4-DBP/ISO). The thermal properties of the copolyesters HFD/ ISO-co-DBP/ISO depend upon the amounts of HFD/ISO moiety present in the copolymer. Physical properties of the copolyesters were intermediate between those of the homopolyesters and depend upon the concentration of comonomers present in the copolyester.
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39
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Xu Q, Mi J, Zhong C. Description of the Structure of Polystyrene with Six-Site Semiflexible Model. Macromolecules 2009. [DOI: 10.1021/ma802648s] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qinzhi Xu
- Laboratory of Computational Chemistry, Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jianguo Mi
- Laboratory of Computational Chemistry, Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chongli Zhong
- Laboratory of Computational Chemistry, Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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40
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Wu J, Haddad TS, Mather PT. Vertex Group Effects in Entangled Polystyrene−Polyhedral Oligosilsesquioxane (POSS) Copolymers. Macromolecules 2009. [DOI: 10.1021/ma8024267] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian Wu
- Polymer Program and Department of Chemical Engineering, University of Connecticut, Storrs, Connecticut 06269, and ERC, Inc., AFRL/PRSM, Edwards Air Force Base, California 93524
| | - Timothy S. Haddad
- Polymer Program and Department of Chemical Engineering, University of Connecticut, Storrs, Connecticut 06269, and ERC, Inc., AFRL/PRSM, Edwards Air Force Base, California 93524
| | - Patrick T. Mather
- Polymer Program and Department of Chemical Engineering, University of Connecticut, Storrs, Connecticut 06269, and ERC, Inc., AFRL/PRSM, Edwards Air Force Base, California 93524
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41
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TANIO N, OBATA H, OKADA A, SEGAWA S, TAKEMURA Y, KANEKO M. Improvement of Transparency of Optical Polymer by Amorphous Structure Control. KOBUNSHI RONBUNSHU 2009. [DOI: 10.1295/koron.66.1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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TANIO N, MOMONO Y, HOSOI K, OKURA M, MATUHARA J. Refractive Index Prediction System of Optical Polymers. KOBUNSHI RONBUNSHU 2009. [DOI: 10.1295/koron.66.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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43
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Chen X, Carbone P, Santangelo G, Di Matteo A, Milano G, Müller-Plathe F. Backmapping coarse-grained polymer models under sheared nonequilibrium conditions. Phys Chem Chem Phys 2009; 11:1977-88. [DOI: 10.1039/b817895j] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Cheng CC, Huang CF, Yen YC, Chang FC. A “plug and play” polymer through biocomplementary hydrogen bonding. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22949] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Li H, Curro JG, Wu DT, Habenschuss A. X-ray Scattering of Vinyl Polyolefin Liquids and Random Copolymers: Theory and Experiment. Macromolecules 2008. [DOI: 10.1021/ma702748v] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Huimin Li
- Department of Chemical Engineering, Colorado School of Mines, Golden, Colorado 80401
| | - John G. Curro
- Department of Chemical & Nuclear Engineering, University of New Mexico, Albuquerque, New Mexico 87131
| | - David T. Wu
- Department of Chemistry & Department of Chemical Engineering, Colorado School of Mines, Golden, Colorado 80401
| | - Anton Habenschuss
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
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46
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ZHAO L, LI YG, ZHONG CL. Description of the Structure and Properties of Atactic Polystyrene Melt Using Integral Equation Theory. CHINESE J CHEM 2007. [DOI: 10.1002/cjoc.200790351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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47
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Wang X, Gu Q, Sun Q, Zhou D, Sun P, Xue G. Characterization of Polymer Compatibility by 1H Dipolar Filter Solid-State NMR under Fast Magic Angle Spinning. Macromolecules 2007. [DOI: 10.1021/ma071823c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiaoliang Wang
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Qiang Gu
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Qing Sun
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Dongshan Zhou
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Pingchuan Sun
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Gi Xue
- Department of Polymer Science and Engineering, The School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China, and Key Laboratory of Functional Polymer Materials, Ministry of Education, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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48
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Atorngitjawat P, Runt J. Ion Conduction and Polymer Dynamics of Poly(2-vinylpyridine)-Lithium Perchlorate Mixtures. J Phys Chem B 2007; 111:13483-90. [DOI: 10.1021/jp0734068] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pornpen Atorngitjawat
- Department of Materials Science and Engineering and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, and Department of Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand
| | - James Runt
- Department of Materials Science and Engineering and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, and Department of Chemistry, Faculty of Science, Burapha University, Chonburi 20131, Thailand
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49
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50
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Spyriouni T, Tzoumanekas C, Theodorou D, Müller-Plathe F, Milano G. Coarse-Grained and Reverse-Mapped United-Atom Simulations of Long-Chain Atactic Polystyrene Melts: Structure, Thermodynamic Properties, Chain Conformation, and Entanglements. Macromolecules 2007. [DOI: 10.1021/ma0700983] [Citation(s) in RCA: 171] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Theodora Spyriouni
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, Athens GR 15780, Greece, Institute of Physical Chemistry, NRCPS “Demokritos”, Aghia Paraskevi Attikis, 153 10 Athens, Greece, and Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287
| | - Christos Tzoumanekas
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, Athens GR 15780, Greece, Institute of Physical Chemistry, NRCPS “Demokritos”, Aghia Paraskevi Attikis, 153 10 Athens, Greece, and Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287
| | - Doros Theodorou
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, Athens GR 15780, Greece, Institute of Physical Chemistry, NRCPS “Demokritos”, Aghia Paraskevi Attikis, 153 10 Athens, Greece, and Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287
| | - Florian Müller-Plathe
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, Athens GR 15780, Greece, Institute of Physical Chemistry, NRCPS “Demokritos”, Aghia Paraskevi Attikis, 153 10 Athens, Greece, and Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287
| | - Giuseppe Milano
- Department of Materials Science and Engineering, School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Street, Zografou Campus, Athens GR 15780, Greece, Institute of Physical Chemistry, NRCPS “Demokritos”, Aghia Paraskevi Attikis, 153 10 Athens, Greece, and Dutch Polymer Institute (DPI), P.O. Box 902, 5600 AX Eindhoven, The Netherlands, Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Petersenstrasse 20, D-64287
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