1
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Li YC, Wu ZP, Zong ZH, Cao XZ. Rheological Role of Stiff Nanorings on Concurrently Strengthening and Toughening Polymer Nanocomposites. ACS Macro Lett 2023; 12:183-188. [PMID: 36692488 DOI: 10.1021/acsmacrolett.2c00610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Nanorings, which are increasingly uncovered in natural systems and synthesized in man-made materials, exhibit dynamics distinct from those known for linear chains. We show in this study that, when immersed in a polymer melt matrix, segments of a stiff nanoring (SNR) have more facilitated subdiffusion, i.e., with a larger scaling exponent in the mean squared displacement, than those belonging to one flexible counterpart, while the whole SNR is more suppressed by its surroundings. It is revealed that adding SNRs contributes to achieving the long-anticipated rheological objective of sol- and gel-like characteristics at high and low shearing frequencies, respectively. This study suggests the promising prospect of exploiting SNRs to concurrently strengthen and toughen target polymer nanocomposites.
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Affiliation(s)
- Yu-Chao Li
- Department of Physics and Fujian Provincial Key Laboratory for Soft Functional Materials Research, College of Physical Science and Technology, Xiamen University, Xiamen 361005, P.R. China
| | - Zong-Pei Wu
- Department of Physics and Fujian Provincial Key Laboratory for Soft Functional Materials Research, College of Physical Science and Technology, Xiamen University, Xiamen 361005, P.R. China
| | - Ze-Hao Zong
- Department of Physics and Fujian Provincial Key Laboratory for Soft Functional Materials Research, College of Physical Science and Technology, Xiamen University, Xiamen 361005, P.R. China
| | - Xue-Zheng Cao
- Department of Physics and Fujian Provincial Key Laboratory for Soft Functional Materials Research, College of Physical Science and Technology, Xiamen University, Xiamen 361005, P.R. China
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2
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Zhang H, Zha H, Liu C, Hong C. Scalable preparation and direct visualization of cyclic polymers via self-folding cyclization technique. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1344-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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3
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Singh M, Dong M, Wu W, Nejat R, Tran DK, Pradhan N, Raghavan D, Douglas JF, Wooley KL, Karim A. Enhanced Dielectric Strength and Capacitive Energy Density of Cyclic Polystyrene Films. ACS POLYMERS AU 2022; 2:324-332. [PMID: 36254316 PMCID: PMC9562468 DOI: 10.1021/acspolymersau.2c00014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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The maximum capacitive
energy stored in polymeric dielectric capacitors,
which are ubiquitous in high-power-density devices, is dictated by
the dielectric breakdown strength of the dielectric polymer. The fundamental
mechanisms of the dielectric breakdown, however, remain unclear. Based
on a simple free-volume model of the polymer fluid state, we hypothesized
that the free ends of linear polymer chains might act as “defect”
sites, at which the dielectric breakdown can initiate. Thus, the dielectric
breakdown strength of cyclic polymers should exhibit enhanced stability
in comparison to that of their linear counterparts having the same
composition and similar molar mass. This hypothesis is supported by
the ∼50% enhancement in the dielectric breakdown strength and
∼80% enhancement in capacitive energy density of cyclic polystyrene
melt films in comparison to corresponding linear polystyrene control
films. Furthermore, we observed that cyclic polymers exhibit a denser
packing density than the linear chain melts, an effect that is consistent
with and could account for the observed property changes. Our work
demonstrates that polymer topology can significantly influence the
capacitive properties of polymer films, and correspondingly, we can
expect polymer topology to influence the gas permeability, shear modulus,
and other properties of thin films dependent on film density.
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Affiliation(s)
- Maninderjeet Singh
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Mei Dong
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Texas A&M University, College Station, Texas 77842, United States
| | - Wenjie Wu
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
| | - Roushanak Nejat
- Materials Engineering Program, University of Houston, Houston, Texas 77204, United States
| | - David K. Tran
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Texas A&M University, College Station, Texas 77842, United States
| | - Nihar Pradhan
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, Mississippi 39217, United States
| | - Dharmaraj Raghavan
- Department of Chemistry, Howard University, Washington, DC 20059, United States
| | - Jack F. Douglas
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Karen L. Wooley
- Departments of Chemistry, Chemical Engineering, and Materials Science & Engineering, Texas A&M University, College Station, Texas 77842, United States
| | - Alamgir Karim
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, United States
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4
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Doi Y, Kitamura J, Uneyama T, Masubuchi Y, Takano A, Takahashi Y, Matsushita Y. Viscoelastic properties of comb-shaped ring polystyrenes. Polym J 2022. [DOI: 10.1038/s41428-022-00686-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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5
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Choi JH, Kwon T, Sung BJ. Relative Chain Flexibility Determines the Spatial Arrangement and the Diffusion of a Single Ring Chain in Linear Chain Films. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Jong Ho Choi
- Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea
| | - Taejin Kwon
- Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea
| | - Bong June Sung
- Department of Chemistry, Sogang University, Seoul 04107, Republic of Korea
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6
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Sawayama T, Wang Y, Watanabe T, Takayanagi M, Yamamoto T, Hosono N, Uemura T. Metal‐Organic Frameworks for Practical Separation of Cyclic and Linear Polymers. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Taku Sawayama
- Department of Advanced Materials Science Graduate School of Frontier Sciences The University of Tokyo 5-1-5 Kashiwanoha Kashiwa Chiba 277-8561 Japan
| | - Yubo Wang
- Graduate School of Chemical Sciences and Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Tomohisa Watanabe
- Graduate School of Chemical Sciences and Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Masayoshi Takayanagi
- The Center for Data Science Education and Research Shiga University Hikone Shiga 522-8522 Japan
- RIKEN Center for Advanced Intelligence Project 1-4-1 Nihonbashi, Chuo-ku Tokyo 103-0027 Japan
| | - Takuya Yamamoto
- Division of Applied Chemistry Faculty of Engineering Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Nobuhiko Hosono
- Department of Advanced Materials Science Graduate School of Frontier Sciences The University of Tokyo 5-1-5 Kashiwanoha Kashiwa Chiba 277-8561 Japan
- Department of Applied Chemistry Graduate School of Engineering The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Takashi Uemura
- Department of Advanced Materials Science Graduate School of Frontier Sciences The University of Tokyo 5-1-5 Kashiwanoha Kashiwa Chiba 277-8561 Japan
- Department of Applied Chemistry Graduate School of Engineering The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656 Japan
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7
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Sawayama T, Wang Y, Watanabe T, Takayanagi M, Yamamoto T, Hosono N, Uemura T. Metal-Organic Frameworks for Practical Separation of Cyclic and Linear Polymers. Angew Chem Int Ed Engl 2021; 60:11830-11834. [PMID: 33733567 DOI: 10.1002/anie.202102794] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Indexed: 12/24/2022]
Abstract
The purification step in the manufacturing of cyclic polymers is difficult as complete fractionation to eliminate linear impurities requires considerable effort. Here, we report a new polymer separation methodology that uses metal-organic frameworks (MOFs) to discriminate between linear and cyclic polyethylene glycols (PEGs) via selective polymer insertion into the MOF nanopores. Preparation of a MOF-packed column allowed analytical and preparative chromatographic separation of these topologically distinct pairs. In addition, gram-scale PEGs with only cyclic structures were successfully obtained from a crude reaction mixture by using MOF as an adsorbent.
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Affiliation(s)
- Taku Sawayama
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8561, Japan
| | - Yubo Wang
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Tomohisa Watanabe
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Masayoshi Takayanagi
- The Center for Data Science Education and Research, Shiga University, Hikone, Shiga, 522-8522, Japan.,RIKEN Center for Advanced Intelligence Project, 1-4-1 Nihonbashi, Chuo-ku, Tokyo, 103-0027, Japan
| | - Takuya Yamamoto
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, 060-8628, Japan
| | - Nobuhiko Hosono
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8561, Japan.,Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Takashi Uemura
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8561, Japan.,Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
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8
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Haque FM, Grayson SM. The synthesis, properties and potential applications of cyclic polymers. Nat Chem 2020; 12:433-444. [DOI: 10.1038/s41557-020-0440-5] [Citation(s) in RCA: 150] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 02/14/2020] [Indexed: 11/09/2022]
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9
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Haque FM, Schexnayder CM, Matxain JM, Barroso-Bujans F, Grayson SM. MALDI-ToF MS Study of Macrocyclic Polyethers Generated by Electrophilic Zwitterionic Ring Expansion Polymerization of Monosubstituted Epoxides with B(C6F5)3. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01050] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Farihah M. Haque
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Ca’ra M. Schexnayder
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Jon M. Matxain
- Donostia International Physics Center (DIPC), Paseo Manuel Lardizábal 4, Donostia—San Sebastián 20018, Spain
- Kimika Fakultatea, Euskal Herriko Unibertsitatea UPV/EHU, Manuel Lardizabal Pasealekua 3, 20018 Donostia—San Sebastián, Spain
| | - Fabienne Barroso-Bujans
- Donostia International Physics Center (DIPC), Paseo Manuel Lardizábal 4, Donostia—San Sebastián 20018, Spain
- Materials Physics Center, CSIC-UPV/EHU, Paseo Manuel Lardizábal 5, Donostia—San Sebastián 20018, Spain
- IKERBASQUE—Basque Foundation for Science, María Díaz de Haro 3, E-48013 Bilbao, Spain
| | - Scott M. Grayson
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
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10
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Yamamoto T, Tezuka Y. Cyclic polymers revealing topology effects upon self-assemblies, dynamics and responses. SOFT MATTER 2015; 11:7458-7468. [PMID: 26264187 DOI: 10.1039/c5sm01557j] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A variety of single- and multicyclic polymers having programmed chemical structures with guaranteed purity have now become obtainable owing to a number of synthetic breakthroughs achieved in recent years. Accordingly, a broadening range of studies has been undertaken to gain updated insights on fundamental polymer properties of cyclic polymers in either solution or bulk, in either static or dynamic states, and in self-assemblies, leading to unusual properties and functions of polymer materials based on their cyclic topologies. In this article, we review recent studies aiming to achieve distinctive properties and functions by cyclic polymers unattainable by their linear or branched counterparts. We focus, in particular, on selected examples of unprecedented topology effects of cyclic polymers upon self-assemblies, dynamics and responses, to highlight current progress in Topological Polymer Chemistry.
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Affiliation(s)
- Takuya Yamamoto
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, Tokyo, 152-8552, Japan.
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11
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Lee E, Kim S, Jung Y. Slowing down of ring polymer diffusion caused by inter-ring threading. Macromol Rapid Commun 2015; 36:1115-21. [PMID: 25881785 DOI: 10.1002/marc.201400713] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 03/13/2015] [Indexed: 11/08/2022]
Abstract
Diffusion of long ring polymers in a melt is much slower than the reorganization of their internal structures. While direct evidence for entanglements has not been observed in the long ring polymers unlike linear polymer melts, threading between the rings is suspected to be the main reason for slowing down of ring polymer diffusion. It is, however, difficult to define the threading configuration between two rings because the rings have no chain end. In this work, evidence for threading dynamics of ring polymers is presented by using molecular dynamics simulation and applying a novel analysis method. The simulation results are analyzed in terms of the statistics of persistence and exchange times that have proved useful in studying heterogeneous dynamics of glassy systems. It is found that the threading time of ring polymer melts increases more rapidly with the degree of polymerization than that of linear polymer melts. This indicates that threaded ring polymers cannot diffuse until an unthreading event occurs, which results in the slowing down of ring polymer diffusion.
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Affiliation(s)
- Eunsang Lee
- Department of Chemistry, Seoul National University, Seoul, 151-747, Korea
| | - Soree Kim
- Department of Chemistry, Seoul National University, Seoul, 151-747, Korea
| | - YounJoon Jung
- Department of Chemistry, Seoul National University, Seoul, 151-747, Korea
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12
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Dolgushev M, Guérin T, Blumen A, Bénichou O, Voituriez R. Gaussian semiflexible rings under angular and dihedral restrictions. J Chem Phys 2014; 141:014901. [PMID: 25005305 DOI: 10.1063/1.4885445] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Semiflexible polymer rings whose bonds obey both angular and dihedral restrictions [M. Dolgushev and A. Blumen, J. Chem. Phys. 138, 204902 (2013)], are treated under exact closure constraints. This allows us to obtain semianalytic results for their dynamics, based on sets of Langevin equations. The dihedral restrictions clearly manifest themselves in the behavior of the mean-square monomer displacement. The determination of the equilibrium ring conformations shows that the dihedral constraints influence the ring curvature, leading to compact folded structures. The method for imposing such constraints in Gaussian systems is very general and it allows to account for heterogeneous (site-dependent) restrictions. We show it by considering rings in which one site differs from the others.
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Affiliation(s)
- Maxim Dolgushev
- Theoretical Polymer Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Thomas Guérin
- Laboratoire de Physique Théorique de la Matière Condensée, Centre National de la Recherche Scientifique, Université Pierre et Marie Curie, 4 Place Jussieu, 75005 Paris, France
| | - Alexander Blumen
- Theoretical Polymer Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany
| | - Olivier Bénichou
- Laboratoire de Physique Théorique de la Matière Condensée, Centre National de la Recherche Scientifique, Université Pierre et Marie Curie, 4 Place Jussieu, 75005 Paris, France
| | - Raphaël Voituriez
- Laboratoire de Physique Théorique de la Matière Condensée, Centre National de la Recherche Scientifique, Université Pierre et Marie Curie, 4 Place Jussieu, 75005 Paris, France
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