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Zheng Y, Kafle N, Schwarz D, Eagan JM, Hayano S, Nakama Y, Pan P, Miyoshi T. Asymmetric Molecular Dynamics and Anisotropic Phase Separation in the Cocrystal of the Crystalline/Crystalline Polymer Blend. ACS Macro Lett 2022; 11:193-198. [PMID: 35574768 DOI: 10.1021/acsmacrolett.1c00745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Semicrystalline polymers are categorized as either mobile or fixed crystals, depending on chain mobility in the crystalline region. In this work, we investigate molecular dynamics and phase structure in the cocrystal consisting of fixed and mobile polymer crystals by solid-state (ss) nuclear magnetic resonance (NMR) spectroscopy. It is demonstrated that (i) the mobile component begins large amplitude motions associated with crystal-crystal transition, while fixed ones keep their rigidity in the cocrystal, and (ii) asymmetric molecular dynamics leads to nanosegregations into mobile- and fixed-rich domains in the cocrystal below the melting temperature (Tm). The observed phase separation induced by asymmetric molecular dynamics is similar to the phase separation of the miscible amorphous polymer blend; however, it is limited to two dimensions due to the parallel packing of the stems inside the cocrystal, as well as chain connectivity at the crystalline-amorphous boundary.
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Affiliation(s)
- Ying Zheng
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
- Institute of Zhejiang University-Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
| | - Navin Kafle
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Derek Schwarz
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
| | - James M. Eagan
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Shigetaka Hayano
- Zeon Corporation R&D Center, 1-2-1 Yako, Kawasaki-ward, Kawasaki City, Kanagawa Prefecture 210-9507, Japan
| | - Yuki Nakama
- Zeon Corporation R&D Center, 1-2-1 Yako, Kawasaki-ward, Kawasaki City, Kanagawa Prefecture 210-9507, Japan
| | - Pengju Pan
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
- Institute of Zhejiang University-Quzhou, 78 Jiuhua Boulevard North, Quzhou 324000, China
| | - Toshikazu Miyoshi
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
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2
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Kafle N, Makita Y, Zheng Y, Schwarz D, Kurosu H, Pan P, Eagan JM, Nakama Y, Hayano S, Miyoshi T. Roles of Conformational Flexibility in the Crystallization of Stereoirregular Polymers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00888] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Navin Kafle
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Yuta Makita
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Ying Zheng
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
- State Key Laboratory of Chemical Engineering, College of Biological and Chemical Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Derek Schwarz
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Hiromichi Kurosu
- Department of Clothing Environmental Science, Nara Women’s University, Kitauoya, Higashimachi, Nara 630-8506, Japan
| | - Pengju Pan
- State Key Laboratory of Chemical Engineering, College of Biological and Chemical Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - James M. Eagan
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Yuki Nakama
- Zeon Corporation R&D Center, 1-2-1 Yako, Kawasaki-ward, Kawasaki City, Kanagawa 210-9507, Japan
| | - Shigetaka Hayano
- Zeon Corporation R&D Center, 1-2-1 Yako, Kawasaki-ward, Kawasaki City, Kanagawa 210-9507, Japan
| | - Toshikazu Miyoshi
- School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325-3909, United States
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3
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Wang S, Hong YL, Yuan S, Chen W, Zhou W, Li Z, Wang K, Min X, Konishi T, Miyoshi T. Chain Trajectory, Chain Packing, and Molecular Dynamics of Semicrystalline Polymers as Studied by Solid-State NMR. Polymers (Basel) 2018; 10:E775. [PMID: 30960700 PMCID: PMC6403921 DOI: 10.3390/polym10070775] [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: 06/03/2018] [Revised: 07/13/2018] [Accepted: 07/13/2018] [Indexed: 01/05/2023] Open
Abstract
Chain-level structure of semicrystalline polymers in melt- and solution-grown crystals has been debated over the past half century. Recently, 13C⁻13C double quantum (DQ) Nuclear Magnetic Resonance (NMR) spectroscopy has been successfully applied to investigate chain-folding (CF) structure and packing structure of 13C enriched polymers after solution and melt crystallization. We review recent NMR studies for (i) packing structure, (ii) chain trajectory, (iii) conformation of the folded chains, (iv) nucleation mechanisms, (v) deformation mechanism, and (vi) molecular dynamics of semicrystalline polymers.
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Affiliation(s)
- Shijun Wang
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
| | - You-Lee Hong
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
- RIKEN CLST-JEOL Collaboration Center, RIKEN, Yokohama, Kanagawa 230-0045, Japan.
| | - Shichen Yuan
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
| | - Wei Chen
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
- State Key Lab of Pollution Control and Resource Reuse Study, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
| | - Wenxuan Zhou
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
| | - Zhen Li
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
| | - Kun Wang
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
| | - Xu Min
- School of Physics and Materials Science & Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China.
| | - Takashi Konishi
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
- Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan.
| | - Toshikazu Miyoshi
- Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.
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4
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Chen W, Zhou W, Makita Y, Wang S, Yuan S, Konishi T, Miyoshi T. Characterization of the Slow Molecular Dynamics of Poly(
l
‐Lactic Acid) in α and α′ Phases, in a Glassy State, and in a Complex with Poly(
d
‐Lactic Acid) by Solid‐State NMR. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201700451] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wei Chen
- Department of Polymer Science The University of Akron Akron OH 44325‐3909 USA
- State Key Lab of Pollution Control and Resource Reuse Study College of Environmental Science and Engineering Tongji University Shanghai 200092 China
| | - Wenxuan Zhou
- Department of Polymer Science The University of Akron Akron OH 44325‐3909 USA
| | - Yuta Makita
- Department of Polymer Science The University of Akron Akron OH 44325‐3909 USA
| | - Shijun Wang
- Department of Polymer Science The University of Akron Akron OH 44325‐3909 USA
| | - Shichen Yuan
- Department of Polymer Science The University of Akron Akron OH 44325‐3909 USA
| | - Takashi Konishi
- Department of Polymer Science The University of Akron Akron OH 44325‐3909 USA
- Graduate School of Human and Environmental Studies Kyoto University Kyoto 606‐8501 Japan
| | - Toshikazu Miyoshi
- Department of Polymer Science The University of Akron Akron OH 44325‐3909 USA
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5
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Kurz R, Achilles A, Chen W, Schäfer M, Seidlitz A, Golitsyn Y, Kressler J, Paul W, Hempel G, Miyoshi T, Thurn-Albrecht T, Saalwächter K. Intracrystalline Jump Motion in Poly(ethylene oxide) Lamellae of Variable Thickness: A Comparison of NMR Methods. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00843] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
| | | | - Wei Chen
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | | | | | | | | | | | | | - Toshikazu Miyoshi
- Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
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6
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Golitsyn Y, Pulst M, Kressler J, Reichert D. Molecular Dynamics in the Crystalline Regions of Poly(ethylene oxide) Containing a Well-Defined Point Defect in the Middle of the Polymer Chain. J Phys Chem B 2017; 121:4620-4630. [PMID: 28398054 DOI: 10.1021/acs.jpcb.7b01949] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The chain mobility in crystals of a homopolymer of poly(ethylene oxide) (PEO) with 22 monomer units (PEO22) is compared with that of a PEO having the identical number of monomer units but additionally a 1,4-disubstituted 1,2,3-triazole (TR) point defect in the middle of the chain (PEO11-TR-PEO11). In crystals of PEO22, the characteristic αc-relaxation (helix jumps) is detected and the activation energy of this process is calculated from the pure crystalline 1H FIDs to 67 kJ/mol. PEO11-TR-PEO11 exhibits a more complex behavior, i.e. a transition into the high temperature phase HTPh is noticed during heating in the temperature range between -5 and 10 °C which is attributed to the incorporation of the TR ring into the crystalline lamellae. The crystal mobility of the low temperature phase LTPh of PEO11-TR-PEO11 is in good agreement with PEO22 since helical jump motions could also be detected by analysis of the 1H FIDs and the corresponding values of their second moments M2. In contrast, the high temperature phase of PEO11-TR-PEO11 shows a completely different behavior of the crystal mobility. The crystalline PEO chains are rigid in this HTPh on the time scale of both, the 1H time-domain technique and in 13C MAS CODEX NMR spectroscopy, i.e. the αc-mobility of PEO in the HTPh of PEO11-TR-PEO11 is completely suppressed and the PEO11 chains are converted into a crystal-fixed polymer due to the incorporation of the TR rings into the crystal structure. However, the TR defect of PEO11-TR-PEO11 shows in the HTPh characteristic π-flip motions with an Arrhenius type activation energy of 223 kJ/mol measured by dielectric relaxation spectroscopy. This motion cannot be observed by corresponding 13C MAS CODEX NMR measurements due to an interfering spin-dynamic effect.
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Affiliation(s)
- Yury Golitsyn
- Faculty of Natural Sciences II, Martin Luther University Halle-Wittenberg , D-06099 Halle (Saale), Germany
| | - Martin Pulst
- Faculty of Natural Sciences II, Martin Luther University Halle-Wittenberg , D-06099 Halle (Saale), Germany
| | - Jörg Kressler
- Faculty of Natural Sciences II, Martin Luther University Halle-Wittenberg , D-06099 Halle (Saale), Germany
| | - Detlef Reichert
- Faculty of Natural Sciences II, Martin Luther University Halle-Wittenberg , D-06099 Halle (Saale), Germany
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7
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Chen W, Reichert D, Miyoshi T. Helical Jump Motions of Poly(l-Lactic Acid) Chains in the α Phase As Revealed by Solid-State NMR. J Phys Chem B 2015; 119:4552-63. [DOI: 10.1021/acs.jpcb.5b00694] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wei Chen
- The University of Akron, Department of Polymer
Science, Akron, Ohio 44325-3909, United States
| | - Detlef Reichert
- Institut
für Physik, Martin-Luther-Universität Halle-Wittenberg, Betty-Heimann-Str.
7, D-06120 Halle
(Saale), Germany
| | - Toshikazu Miyoshi
- The University of Akron, Department of Polymer
Science, Akron, Ohio 44325-3909, United States
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8
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Tang C, Inomata A, Sakai Y, Yokoyama H, Miyoshi T, Ito K. Effects of Chemical Modification on the Molecular Dynamics of Complex Polyrotaxanes Investigated by Solid-State NMR. Macromolecules 2013. [DOI: 10.1021/ma401476g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chuan Tang
- Department
of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Aoi Inomata
- Department
of Advanced Materials Science, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Yasuhiro Sakai
- Department
of Advanced Materials Science, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Hideaki Yokoyama
- Department
of Advanced Materials Science, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Toshikazu Miyoshi
- Department
of Polymer Science, The University of Akron, Akron, Ohio 44325, United States
| | - Kohzo Ito
- Department
of Advanced Materials Science, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
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