1
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Khan KH, Golitsyn Y, Reichert D, Kressler J, Hussain H. Graphene Oxide-Grafted Hybrid Diblock Copolymer Brush (GO- graft-PEG 6k- block-P(MA-POSS)) as Nanofillers for Enhanced Lithium Ion Conductivity of PEO-Based Nanocomposite Solid Polymer Electrolytes. J Phys Chem B 2023; 127:2066-2082. [PMID: 36820510 DOI: 10.1021/acs.jpcb.2c07699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Nanocomposite solid polymer electrolytes (NSPEs) with PEO as the matrix and (i) GO or (ii) GO-graft-PEG6k or (iii) GO-graft-PEG6k-block-P(MA-POSS) as nanofillers have been fabricated to elucidate the impact of the filler morphology on the lithium ion conductivity. GO-graft-PEG6k was obtained by grafting PEG6k onto GO via esterification. GO-graft-PEG6k-block-P(MA-POSS) was prepared via surface-initiated atom transfer radical polymerization. Fourier-transform infrared spectroscopy revealed enhanced salt dissociation and complexation between the filler and PEO host that could be attributed to Lewis acid-base interactions. Electrochemical impedance spectroscopy revealed the improved ion conductivity of the fabricated NSPEs as compared with the pristine PEO-LiClO4. As an example, at 50 °C, the ion conductivity increased to 4.01 × 10-5 and 6.31 × 10-5 S cm-1 with 0.3% GO and 0.3% GO-graft-PEG6k, respectively, from 2.36 × 10-5 S cm-1 of PEO-LiClO4, suggesting that the filler with brush-like architecture (GO-graft-PEG6k) is more efficient in enhancing the ion conductivity. Further increase in filler content resulted in lowering of the ion conductivity that could be ascribed to aggregation of the filler. The most dramatic impact on conductivity was observed with the incorporation of brush-like GO-graft-PEG6k-block-P(MA-POSS) as a nanofiller (3.0 × 10-4 S cm-1 at 50 °C with 1.0 wt % filler content). The increase in ion conductivity in the current systems, as opposed to the conventional view, could not be correlated with the content of the amorphous phase of the matrix. The conduction mechanism is still unclear; nevertheless, it could be assumed that in addition to the ion conduction through the PEO matrix, the filler forms additional low-energy ion conducting channels at its interface with the matrix. The pendent POSS nanocages of GO-graft-PEG6k-block-P(MAPOSS) might probably increase the free volume at the interface with the matrix that is associated with higher chain and ion mobility, thus further enhancing the ion conductivity as compared with GO and GO-graft-PEG6k. The faster ion dynamics in 1.0 wt % GO-graft-PEG6k-block-P(MAPOSS) NSPEs has also been verified by the dielectric relaxation studies. Thus, integration of both the PEG and POSS nanocages into GO-grafted brush-like architecture offers a new tool for tuning the lithium ion conductivity for potential Li ion battery applications.
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Affiliation(s)
- Khizar Hayat Khan
- Department of Chemistry, Quaid-i-Azam University Islamabad, Islamabad 45320, Pakistan
| | - Yury Golitsyn
- Department of Physics, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Detlef Reichert
- Department of Physics, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Jörg Kressler
- Department of Chemistry, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Hazrat Hussain
- Department of Chemistry, Quaid-i-Azam University Islamabad, Islamabad 45320, Pakistan
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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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Zheng L, Liu L, Shao C, Wang W, Wang B, Pan L, Li Y, Ma Z. Phase Transition from Tetragonal Form II to Hexagonal Form I of Butene-1/4-Methyl-1-pentene Random Copolymers: Molecular Factor versus Stretching Stimuli. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02600] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Lirong Zheng
- Tianjin Key Laboratory of Composite and Functional Materials, and School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Long Liu
- Tianjin Key Laboratory of Composite and Functional Materials, and School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Chunguang Shao
- National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Wei Wang
- Tianjin Key Laboratory of Composite and Functional Materials, and School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Bin Wang
- Tianjin Key Laboratory of Composite and Functional Materials, and School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Li Pan
- Tianjin Key Laboratory of Composite and Functional Materials, and School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
| | - Yuesheng Li
- Tianjin Key Laboratory of Composite and Functional Materials, and School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
- Collaborative Innovation
Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
| | - Zhe Ma
- Tianjin Key Laboratory of Composite and Functional Materials, and School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
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4
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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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5
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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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6
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Meng L, Soucek MD, Li Z, Miyoshi T. Investigation of a non-isocyanate urethane functional monomer in latexes by emulsion polymerization. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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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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8
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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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9
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Pisklak DM, Zielińska-Pisklak M, Szeleszczuk Ł. Application of 13C NMR cross-polarization inversion recovery experiments for the analysis of solid dosage forms. Int J Pharm 2016; 513:538-542. [PMID: 27667758 DOI: 10.1016/j.ijpharm.2016.09.066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 09/21/2016] [Accepted: 09/22/2016] [Indexed: 10/21/2022]
Abstract
Solid-state nuclear magnetic resonance (ssNMR) is a powerful and unique method for analyzing solid forms of the active pharmaceutical ingredients (APIs) directly in their original formulations. Unfortunately, despite their wide range of application, the ssNMR experiments often suffer from low sensitivity and peaks overlapping between API and excipients. To overcome these limitations, the crosspolarization inversion recovery method was successfully used. The differences in the spin-lattice relaxation time constants for hydrogen atoms T1(H) between API and excipients were employed in order to separate and discriminate their peaks in ssNMR spectra as well as to increase the intensity of API signals in low-dose formulations. The versatility of this method was demonstrated by different examples, including the excipients mixture and commercial solid dosage forms (e.g. granules and tablets).
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Affiliation(s)
- Dariusz Maciej Pisklak
- Faculty of Pharmacy, Medical University of Warsaw, Department of Physical Chemistry, Banacha 1, 02-093 Warsaw, Poland.
| | - Monika Zielińska-Pisklak
- Faculty of Pharmacy, Medical University of Warsaw, Department of Inorganic and Analytical Chemistry, Banacha 1, 02-093 Warsaw, Poland
| | - Łukasz Szeleszczuk
- Faculty of Pharmacy, Medical University of Warsaw, Department of Physical Chemistry, Banacha 1, 02-093 Warsaw, Poland
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10
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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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11
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Yuan S, Li Z, Kang J, Hong YL, Kamimura A, Otsubo A, Miyoshi T. Determination of Local Packing Structure of Mesomorphic Form of Isotactic Polypropylene by Solid-State NMR. ACS Macro Lett 2015; 4:143-146. [PMID: 35596421 DOI: 10.1021/mz5007969] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Understanding the local packing structures of a disordered mesomorphic phase is a challenging issue in polymer characterization. In this work, 13C-13C through-space interactions, as well as a molecular dynamics analysis based on the reorientation of chemical shift anisotropy (CSA), were proposed for the evaluation of the local packing structure of the mesomorphic form of isotactic polypropylene (iPP). 13C-13C double quantum (DQ) buildup curves of 13C 15% CH3 selectively labeled iPP and spin-dynamics simulations demonstrated that the local packing structures in the mesomorphic form were very similar to the packing in the β phase. Moreover, centerband only detection of exchange (CODEX) NMR proved that the correlation time ⟨τc⟩ of the overall stem dynamics in the mesomorphic form followed the same Arrhenius line observed for the β phase, but it deviated from that for the α phase. Based on both structural and dynamic results, it was concluded that the local packing structure in the mesomorphic form was exceedingly close or the same as that of the β phase.
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Affiliation(s)
- Shichen Yuan
- Department
of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Zhen Li
- Department
of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Jia Kang
- Department
of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - You-lee Hong
- Department
of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
| | - Akihiro Kamimura
- SunAllomer, Ltd., 3-2 Yako 2-chome, Kawasaki-ku
Kawasaki 210-0863, Japan
| | - Akihiro Otsubo
- SunAllomer, Ltd., 3-2 Yako 2-chome, Kawasaki-ku
Kawasaki 210-0863, Japan
| | - Toshikazu Miyoshi
- Department
of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, United States
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12
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Gu S, Li Z, Miyoshi T, Jana SC. Polybenzoxazine aerogels with controllable pore structures. RSC Adv 2015. [DOI: 10.1039/c5ra02635k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Polybenzoxazine gelation is expedited in the presence of p-toluenesulfonic acid and the solid networks show strong dependence on the solvent.
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Affiliation(s)
- Senlong Gu
- Department of Polymer Engineering
- University of Akron
- Akron
- USA
| | - Zhen Li
- Department of Polymer Science
- The University of Akron
- Akron
- USA
| | | | - Sadhan C. Jana
- Department of Polymer Engineering
- University of Akron
- Akron
- USA
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13
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Fortier-McGill B, Toader V, Reven L. 13C MAS NMR Study of Poly(methacrylic acid)–Polyether Complexes and Multilayers. Macromolecules 2014. [DOI: 10.1021/ma401673n] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Blythe Fortier-McGill
- Centre
for Self-Assembled
Chemical Structures (CSACS-CRMAA), Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H3A 0B8, Canada
| | - Violeta Toader
- Centre
for Self-Assembled
Chemical Structures (CSACS-CRMAA), Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H3A 0B8, Canada
| | - Linda Reven
- Centre
for Self-Assembled
Chemical Structures (CSACS-CRMAA), Department of Chemistry, McGill University, 801 Sherbrooke St. W., Montreal, QC H3A 0B8, Canada
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14
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Kang J, Miyoshi T. Two Chain-Packing Transformations and Their Effects on the Molecular Dynamics and Thermal Properties of α-Form Isotactic Poly(propylene) under Hot Drawing: A Solid-State NMR Study. Macromolecules 2014. [DOI: 10.1021/ma5004369] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jia Kang
- 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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15
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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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16
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Li Z, Miyoshi T, Sen MK, Koga T, Otsubo A, Kamimura A. Solid-State NMR Characterization of the Chemical Defects and Physical Disorders in α Form of Isotactic Poly(propylene) Synthesized by Ziegler–Natta Catalysts. Macromolecules 2013. [DOI: 10.1021/ma401032z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhen Li
- 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
| | - Mani K. Sen
- Department of Materials
Science
and Engineering, Stony Brook University, Stony Brook, New York 11794-2275, United States
| | - Tadanori Koga
- Department of Materials
Science
and Engineering, Stony Brook University, Stony Brook, New York 11794-2275, United States
| | - Akihiro Otsubo
- SunAllomer, Ltd.,
3-2 Yako 2-chome Kawasaki-ku Kawasaki 210-0863, Japan
| | - Akihiro Kamimura
- SunAllomer, Ltd.,
3-2 Yako 2-chome Kawasaki-ku Kawasaki 210-0863, Japan
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17
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Accelerating crystal–crystal transition in poly(1-butene) with two-step crystallization: An in-situ microscopic infrared imaging and microbeam X-ray diffraction study. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.04.046] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Zhang R, Chen T, Sun P, Li B, Ding D. Investigation on the artificial exchange signals induced by the RIDER effect in CODEX experiments. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2012; 47-48:28-34. [PMID: 22939911 DOI: 10.1016/j.ssnmr.2012.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Revised: 07/17/2012] [Accepted: 08/09/2012] [Indexed: 06/01/2023]
Abstract
The CODEX (center-band only detection of exchange) NMR experiment is widely used for the detection of slow motions in organic solids, especially polymers. However, the RIDER (relaxation-induced dipolar exchange with recoupling) effect may result in artificial exchange signals in the CODEX pure exchange spectrum, which greatly limits the application of CODEX method. Herein, we investigate the distance range that the RIDER effect can reach by performing CODEX experiments on two typical organic solids, hexadecyltrimethylammonium bromide (CTAB) and semi-crystalline polyamide-6 (PA6) where there are no slow molecular motions at room temperature. Our experimental results demonstrate that generally two-bond distance is far enough to ignore the RIDER effect resulted from the dipolar interactions between (13)C and the fast relaxing heteronucleus (14)N. From the built-up curve of RIDER signals as a function of recoupling time and mixing time, it is clearly revealed that the RIDER effect can greatly affect the signal from (13)C directly bonded with (14)N. However, this RIDER effect accounts less than 3% of the reference intensity for signals from (13)C not directly bonded with (14)N if typical recoupling (~0.5 ms) and mixing times (~0.5 s) are used for the investigation of slow motions. When longer recoupling and mixing time are used, there are small RIDER signals even for the (13)C far away from the (14)N. These signals, to a large degree, result from the spin diffusion effect and/or the special microscopic molecule arrangement. However, they are so small compared to the reference signal (~5%) that they can be ignored. Finally, according to the simulation results, it is worth noting that the RIDER signal is still generally negligible compared to the signals due to slow motions if the chemical shift anisotropy reorientation during the mixing time is not too small(larger than 20°) under the condition of 4t(r) recoupling time at the magic-angle-spinning speed of 6.5 kHz.
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Affiliation(s)
- Rongchun Zhang
- School of Physics, Nankai University, Tianjin 300071, PR China
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Critical roles of molecular dynamics in the superior mechanical properties of isotactic-poly(1-butene) elucidated by solid-state NMR. Polym J 2011. [DOI: 10.1038/pj.2011.66] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Miyoshi T, Mamun A, Reichert D. Fast Dynamics and Conformations of Polymer in a Conformational Disordered Crystal Characterized by 1H−13C WISE NMR. Macromolecules 2010. [DOI: 10.1021/ma901927m] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Toshikazu Miyoshi
- National Institute of Advanced Industrial Science and Technology, Research Institute of Nanotechnology, Tsukuba Central 5-1 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Al Mamun
- National Institute of Advanced Industrial Science and Technology, Research Institute of Nanotechnology, Tsukuba Central 5-1 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Detlef Reichert
- University of Halle/Faculty of Science II Department of Physics/Biophysics Group, Betty-Heimann-Strasse 7, 06120 Halle, Germany
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Miyoshi T, Mamun A, Hu W. Molecular Ordering and Molecular Dynamics in Isotactic-Polypropylene Characterized by Solid State NMR. J Phys Chem B 2009; 114:92-100. [DOI: 10.1021/jp908649y] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Toshikazu Miyoshi
- Research Institute of Nanotechnology, National Institute for Advanced Industrial Science and Technology, Central 5-1 Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
| | - Al Mamun
- Research Institute of Nanotechnology, National Institute for Advanced Industrial Science and Technology, Central 5-1 Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
| | - Wei Hu
- Research Institute of Nanotechnology, National Institute for Advanced Industrial Science and Technology, Central 5-1 Higashi 1-1-1, Tsukuba, Ibaraki 305-8565, Japan
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Wachowicz M, White JL. Miscible Blend Dynamics and Thermodynamics: Quantitatively Untangling Slow Conformational Events in Amorphous Polymer Mixtures. Macromolecules 2007. [DOI: 10.1021/ma070605g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marcin Wachowicz
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078
| | - Jeffery L. White
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078
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d'Espinose de Lacaillerie JB, Jarry B, Pascui O, Reichert D. "Cooking the sample": radiofrequency induced heating during solid-state NMR experiments. SOLID STATE NUCLEAR MAGNETIC RESONANCE 2005; 28:225-32. [PMID: 16221542 DOI: 10.1016/j.ssnmr.2005.09.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2005] [Indexed: 05/04/2023]
Abstract
Dissipation of radiofrequency (RF) energy as heat during continuous wave decoupling in solid-state NMR experiment was examined outside the conventional realm of such phenomena. A significant temperature increase could occur while performing dynamic NMR measurements provided the sample contains polar molecules and the sequence calls for relatively long applications of RF power. It was shown that the methyl flip motion in dimethylsulfone (DMS) is activated by the decoupling RF energy conversion to heat during a CODEX pulse sequence. This introduced a significant bias in the correlation time-temperature dependency measurement used to obtain the activation energy of the motion. By investigating the dependency of the temperature increase in hydrated lead nitrate on experimental parameters during high-power decoupling one-pulse experiments, the mechanisms for the RF energy deposition was identified. The samples were heated due to dissipation of the energy absorbed by dielectric losses, a phenomenon commonly known as "microwave" heating. It was thus established that during solid-state NMR experiments at moderate B0 fields, RF heating could lead to the heating of samples containing polar molecules such as hydrated polymers and inorganic solids. In particular, this could result in systematic errors for slow dynamics measurements by solid-state NMR.
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Affiliation(s)
- Jean-Baptiste d'Espinose de Lacaillerie
- Laboratoire de Physique Quantique, UMR CNRS 7142 SIEN, Ecole Supérieure de Physique et de Chimie Industrielles de la Ville de Paris, 10 rue Vauquelin, 75231 Paris, Cedex 05, France.
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