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Ohzono T, Katoh K, Terentjev EM. Microscopy of Diffuse Nematic–Isotropic Transition in Main-Chain Nematic Liquid-Crystal Elastomers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00356] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takuya Ohzono
- Research Institute for Electronics and Photonics, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba 305-8565, Japan
| | - Kaoru Katoh
- Biomedical Research Institute, AIST, 1-1-1 Higashi, Tsukuba 305-8566, Japan
| | - Eugene M. Terentjev
- Cavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom
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Low-Temperature Meltable Elastomers Based on Linear Polydimethylsiloxane Chains Alpha, Omega-Terminated with Mesogenic Groups as Physical Crosslinkers: A Passive Smart Material with Potential as Viscoelastic Coupling. Part I: Synthesis and Phase Behavior. Polymers (Basel) 2020; 12:polym12112476. [PMID: 33113875 PMCID: PMC7693640 DOI: 10.3390/polym12112476] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 10/20/2020] [Accepted: 10/22/2020] [Indexed: 12/14/2022] Open
Abstract
Physically crosslinked low-temperature elastomers were prepared based on linear polydimethylsiloxane (PDMS) elastic chains terminated on both ends with mesogenic building blocks (LC) of azobenzene type. They are generally (and also structurally) highly different from the well-studied LC polymer networks (light-sensitive actuators). The LC units also make up only a small volume fraction in our materials and they do not generate elastic energy upon irradiation, but they act as physical crosslinkers with thermotropic properties. Our elastomers lack permanent chemical crosslinks—their structure is fully linear. The aggregation of the relatively rare, small, and spatially separated terminal LC units nevertheless proved to be a considerably strong crosslinking mechanism. The most attractive product displays a rubber plateau extending over 100 °C, melts near 8 °C, and is soluble in organic solvents. The self-assembly (via LC aggregation) of the copolymer molecules leads to a distinctly lamellar structure indicated by X-ray diffraction (XRD). This structure persists also in melt (polarized light microscopy, XRD), where 1–2 thermotropic transitions occur. The interesting effects of the properties of this lamellar structure on viscoelastic and rheological properties in the rubbery and in the melt state are discussed in a follow-up paper (“Part II”). The copolymers might be of interest as passive smart materials, especially as temperature-controlled elastic/viscoelastic mechanical coupling. Our study focuses on the comparison of physical properties and structure–property relationships in three systems with elastic PDMS segments of different length (8.6, 16.3, and 64.4 repeat units).
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Horodecka S, Strachota A, Mossety-Leszczak B, Šlouf M, Zhigunov A, Vyroubalová M, Kaňková D, Netopilík M. Meltable copolymeric elastomers based on polydimethylsiloxane with multiplets of pendant liquid-crystalline groups as physical crosslinker: A self-healing structural material with a potential for smart applications. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109962] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Zhao W, Lin BP, Zhang XQ, Sun Y, Yang H. Polysiloxane side-chain liquid crystalline polymers prepared by alkyne hydrosilylation. CHINESE JOURNAL OF POLYMER SCIENCE 2015. [DOI: 10.1007/s10118-015-1697-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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5
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Samui AB, Pandey S, Mishra SP. Main chain photoresponsive liquid crystalline polymer synthesized through hydrosilylation. RSC Adv 2015. [DOI: 10.1039/c5ra14818a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Siloxane based dihydride was reacted with diallyl siloxane for designing a fast photoresponsive LC polymer system having LC phase around room temperature. The nematic LC system with fast trans–cis isomerization behaviour was observed.
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Affiliation(s)
- Asit B. Samui
- Defence Institute of Advanced Technology
- Pune-411025
- India
| | - Someshwarnath Pandey
- Polymer Science and Technology Centre
- Naval Materials Research Laboratory
- Ambernath-421506
- India
| | - Sarada P. Mishra
- Polymer Science and Technology Centre
- Naval Materials Research Laboratory
- Ambernath-421506
- India
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6
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García-Márquez AR, Heinrich B, Beyer N, Guillon D, Donnio B. Mesomorphism and Shape-Memory Behavior of Main-Chain Liquid-Crystalline Co-Elastomers: Modulation by the Chemical Composition. Macromolecules 2014. [DOI: 10.1021/ma501164u] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Alfonso Ramon García-Márquez
- Institut
de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 Rue du Loess BP 43, 67034 Strasbourg, Cedex 2, France
| | - Benoît Heinrich
- Institut
de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 Rue du Loess BP 43, 67034 Strasbourg, Cedex 2, France
| | - Nicolas Beyer
- Institut
de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 Rue du Loess BP 43, 67034 Strasbourg, Cedex 2, France
| | - Daniel Guillon
- Institut
de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 Rue du Loess BP 43, 67034 Strasbourg, Cedex 2, France
| | - Bertrand Donnio
- Institut
de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 (CNRS-Université de Strasbourg), 23 Rue du Loess BP 43, 67034 Strasbourg, Cedex 2, France
- Complex Assemblies
of Soft Matter Laboratory (COMPASS), UMI 3254 (CNRS-Solvay-University
of Pennsylvania), CRTB, 350 George
Patterson Boulevard, Bristol, Pennsylvania 19007, United States
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7
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Yang H, Liu MX, Yao YW, Tao PY, Lin BP, Keller P, Zhang XQ, Sun Y, Guo LX. Polysiloxane-Based Liquid Crystalline Polymers and Elastomers Prepared by Thiol–Ene Chemistry. Macromolecules 2013. [DOI: 10.1021/ma400462e] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Hong Yang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Ming-Xia Liu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yue-Wei Yao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Ping-Yang Tao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Bao-Ping Lin
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Patrick Keller
- Institut Curie, Centre De Recherche, CNRS
UMR 168, Université Pierre et Marie Curie, 26 rue d’Ulm 75248 Paris Cedex 05, France
| | - Xue-Qin Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Ying Sun
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Ling-Xiang Guo
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
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8
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Chen H, Yu Z, Hedden RC. Influence of thermal history on mesoscale ordering in polydomain smectic networks. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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9
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Amela-Cortés M, Bruce DW, Evans KE, Smith CW. Unsymmetric main-chain liquid crystal elastomers with tunable phase behaviour: elastic response. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm03692g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Amela-Cortés M, Heinrîch B, Donnio B, Evans KE, Smith CW, Bruce DW. Unsymmetric main-chain liquid crystal elastomers with tuneable phase behaviour: synthesis and mesomorphism. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm03691a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Sánchez-Ferrer A, Finkelmann H. Polydomain-Monodomain Orientational Process in Smectic-C Main-Chain Liquid-Crystalline Elastomers. Macromol Rapid Commun 2010; 32:309-15. [DOI: 10.1002/marc.201000590] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2010] [Revised: 10/02/2010] [Indexed: 11/11/2022]
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12
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Zhang L, Chen S, Zhao H, Shen Z, Chen X, Fan X, Zhou Q. Synthesis and Properties of a Series of Mesogen-Jacketed Liquid Crystalline Polymers with Polysiloxane Backbones. Macromolecules 2010. [DOI: 10.1021/ma100847g] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lanying Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Si Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Han Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhihao Shen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiaofang Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xinghe Fan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Qifeng Zhou
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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Qian L, Zhi J, Tong B, Shi J, Yang F, Dong Y. Synthesis and characterization of main-chain liquid crystalline copolyesters containing phosphaphenanthrene side-groups. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.08.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Patil HP, Lentz DM, Hedden RC. Necking Instability during Polydomain−Monodomain Transition in a Smectic Main-Chain Elastomer. Macromolecules 2009. [DOI: 10.1021/ma9001325] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Harshad P. Patil
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Daniel M. Lentz
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Ronald C. Hedden
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
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15
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Chung T, Romo-Uribe A, Mather PT. Two-Way Reversible Shape Memory in a Semicrystalline Network. Macromolecules 2007. [DOI: 10.1021/ma071517z] [Citation(s) in RCA: 411] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Taekwoong Chung
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, and Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico Cuernavaca, Morelos 62210, Mexico
| | - Angel Romo-Uribe
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, and Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico Cuernavaca, Morelos 62210, Mexico
| | - Patrick T. Mather
- Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland, Ohio 44106, and Instituto de Ciencias Fisicas, Universidad Nacional Autonoma de Mexico Cuernavaca, Morelos 62210, Mexico
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16
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Patil HP, Hedden RC. Effects of structural imperfections on the dynamic mechanical response of main-chain smectic elastomers. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/polb.21329] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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