1
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Yagihara S, Watanabe S, Abe Y, Asano M, Shimizu K, Saito H, Maruyama Y, Kita R, Shinyashiki N, Kundu SK. Universal Behavior of Fractal Water Structures Observed in Various Gelation Mechanisms of Polymer Gels, Supramolecular Gels, and Cement Gels. Gels 2023; 9:506. [PMID: 37504385 PMCID: PMC10379185 DOI: 10.3390/gels9070506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/26/2023] [Accepted: 06/16/2023] [Indexed: 07/29/2023] Open
Abstract
So far, it has been difficult to directly compare diverse characteristic gelation mechanisms over different length and time scales. This paper presents a universal water structure analysis of several gels with different structures and gelation mechanisms including polymer gels, supramolecular gels composed of surfactant micelles, and cement gels. The spatial distribution of water molecules was analyzed at molecular level from a diagram of the relaxation times and their distribution parameters (τ-β diagrams) with our database of the 10 GHz process for a variety of aqueous systems. Polymer gels with volume phase transition showed a small decrease in the fractal dimension of the hydrogen bond network (HBN) with gelation. In supramolecular gels with rod micelle precursor with amphipathic molecules, both the elongation of the micelles and their cross-linking caused a reduction in the fractal dimension. Such a reduction was also found in cement gels. These results suggest that the HBN inevitably breaks at each length scale with relative increase in steric hindrance due to cross-linking, resulting in the fragmentation of collective structures of water molecules. The universal analysis using τ-β diagrams presented here has broad applicability as a method to characterize diverse gel structures and evaluate gelation processes.
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Affiliation(s)
- Shin Yagihara
- Department of Physics, School of Science, Tokai University, Hiratsuka-shi 259-1292, Japan
| | - Seiei Watanabe
- Course of Physics, Graduate School of Science, Tokai University, Hiratsuka-shi 259-1292, Japan
| | - Yuta Abe
- Department of Physics, School of Science, Tokai University, Hiratsuka-shi 259-1292, Japan
| | - Megumi Asano
- Department of Physics, School of Science, Tokai University, Hiratsuka-shi 259-1292, Japan
| | - Kenta Shimizu
- Course of Physics, Graduate School of Science, Tokai University, Hiratsuka-shi 259-1292, Japan
| | - Hironobu Saito
- Department of Physics, School of Science, Tokai University, Hiratsuka-shi 259-1292, Japan
| | - Yuko Maruyama
- Department of Physics, School of Science, Tokai University, Hiratsuka-shi 259-1292, Japan
| | - Rio Kita
- Department of Physics, School of Science, Tokai University, Hiratsuka-shi 259-1292, Japan
- Micro/Nano Technology Center, Tokai University, Hiratsuka-shi 259-1292, Japan
| | - Naoki Shinyashiki
- Department of Physics, School of Science, Tokai University, Hiratsuka-shi 259-1292, Japan
- Micro/Nano Technology Center, Tokai University, Hiratsuka-shi 259-1292, Japan
| | - Shyamal Kumar Kundu
- Department of Physics, School of Basic and Applied Sciences, Galgotias University, Greater Noida 201306, India
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2
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Vijayakumar B, Takatsuka M, Kita R, Shinyashiki N, Yagihara S, Rathinasabapathy S. Dynamics of the Poly(N-Isopropylacrylamide) Microgel Aqueous Suspension Investigated by Dielectric Relaxation Spectroscopy. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Balachandar Vijayakumar
- Department of Physics, Sathyabama Institute of Science and Technology, Chennai 600119, India
| | - Masanobu Takatsuka
- Graduate School of Science and Technology, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Rio Kita
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
- Micro/Nano Technology Center, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Naoki Shinyashiki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
- Micro/Nano Technology Center, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Shin Yagihara
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
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3
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Adanur I, Karazehir T, Doğru Mert B, Akyol M, Ekicibil A. Effect of Gd-doping in Ni/NiO Core/Shell Magnetic Nanoparticles (MNPs) on Structural, Magnetic and Hydrogen Evolution Reaction. J Chem Phys 2022; 156:064705. [DOI: 10.1063/5.0078718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - Tolga Karazehir
- Adana Alparslan Türkes Science and Technology University, Turkey
| | - Başak Doğru Mert
- Adana Alparslan Türkes Science and Technology University, Turkey
| | - Mustafa Akyol
- Materials Engineering, Adana Alparslan Türkes Science and Technology University, Turkey
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4
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Fujii M, Sasaki K, Matsui Y, Inoue S, Kita R, Shinyashiki N, Yagihara S. Dynamics of Uncrystallized Water, Ice, and Hydrated Polymer in Partially Crystallized Poly(vinylpyrrolidone)-Water Mixtures. J Phys Chem B 2020; 124:1521-1530. [PMID: 32009404 DOI: 10.1021/acs.jpcb.9b11552] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this study, we investigated the cooperative molecular dynamics of poly(vinylpyrrolidone) (PVP), ice, and uncrystallized water (UCW) in partially crystallized PVP-water mixtures by means of broadband dielectric spectroscopy. Three relaxation processes, denoted I, II, and III, were observed at temperatures ranging from immediately below the crystallization temperature (Tc) to approximately 200 K. At temperatures of 173-193 K, processes I and II cannot be distinguished. Below 168 K, process II separates into two processes: process IV at higher frequencies and process V at lower frequencies. Process I contributes to process V. In partially crystallized mixtures, process I originates from UCW in an uncrystallized phase with PVP. Process II is attributed to ice in the mixture, with a relaxation time that is 2 orders of magnitude smaller than that of pure ice. The concentration dependence of the strength of process II and the relaxation time relative to that of ice in bovine serum albumin (BSA)-water and gelatin-water mixtures strongly support this conclusion. Observation of processes IV and V indicates the presence of multiple ice relaxation processes. Process III is attributed to the α process of PVP in the uncrystallized phase in 40 and 50 wt % PVP mixtures. For mixtures with 30 wt % PVP or less, process III is attributed not only to the α process of PVP but also to interfacial polarization.
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Affiliation(s)
- Mitsuki Fujii
- Department of Physics, School of Science , Tokai University , 4-1-1 Kitakaname , Hiratuka-shi , Kanagawa 259-1292 , Japan
| | - Kaito Sasaki
- Micro/Nano Technology Center , Tokai University , 4-1-1 Kitakaname , Hiratuka-shi , Kanagawa 259-1292 , Japan
| | - Yurika Matsui
- Department of Physics, School of Science , Tokai University , 4-1-1 Kitakaname , Hiratuka-shi , Kanagawa 259-1292 , Japan
| | - Shiori Inoue
- Department of Physics, School of Science , Tokai University , 4-1-1 Kitakaname , Hiratuka-shi , Kanagawa 259-1292 , Japan
| | - Rio Kita
- Department of Physics, School of Science , Tokai University , 4-1-1 Kitakaname , Hiratuka-shi , Kanagawa 259-1292 , Japan.,Micro/Nano Technology Center , Tokai University , 4-1-1 Kitakaname , Hiratuka-shi , Kanagawa 259-1292 , Japan
| | - Naoki Shinyashiki
- Department of Physics, School of Science , Tokai University , 4-1-1 Kitakaname , Hiratuka-shi , Kanagawa 259-1292 , Japan.,Micro/Nano Technology Center , Tokai University , 4-1-1 Kitakaname , Hiratuka-shi , Kanagawa 259-1292 , Japan
| | - Shin Yagihara
- Department of Physics, School of Science , Tokai University , 4-1-1 Kitakaname , Hiratuka-shi , Kanagawa 259-1292 , Japan
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5
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Physical Meanings of Fractal Behaviors of Water in Aqueous and Biological Systems with Open-Ended Coaxial Electrodes. SENSORS 2019; 19:s19112606. [PMID: 31181722 PMCID: PMC6604069 DOI: 10.3390/s19112606] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 06/04/2019] [Accepted: 06/05/2019] [Indexed: 12/01/2022]
Abstract
The dynamics of a hydrogen bonding network (HBN) relating to macroscopic properties of hydrogen bonding liquids were observed as a significant relaxation process by dielectric spectroscopy measurements. In the cases of water and water rich mixtures including biological systems, a GHz frequency relaxation process appearing at around 20 GHz with the relaxation time of 8.2 ps is generally observed at 25 °C. The GHz frequency process can be explained as a rate process of exchanges in hydrogen bond (HB) and the rate becomes higher with increasing HB density. In the present work, this study analyzed the GHz frequency process observed by suitable open-ended coaxial electrodes, and physical meanings of the fractal nature of water structures were clarified in various aqueous systems. Dynamic behaviors of HBN were characterized by a combination of the average relaxation time and the distribution of the relaxation time. This fractal analysis offered an available approach to both solution and dispersion systems with characterization of the aggregation or dispersion state of water molecules. In the case of polymer-water mixtures, the HBN and polymer networks penetrate each other, however, the HBN were segmented and isolated more by dispersed and aggregated particles in the case of dispersion systems. These HBN fragments were characterized by smaller values of the fractal dimension obtained from the fractal analysis. Some examples of actual usages suggest that the fractal analysis is now one of the most effective tools to understand the molecular mechanism of HBN in aqueous complex materials including biological systems.
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Marzec E, Pietrucha K. Selecting the correct scaffold model for assessing of the dielectric response of collagen-based biomaterials. Colloids Surf B Biointerfaces 2018; 171:506-513. [DOI: 10.1016/j.colsurfb.2018.07.069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 07/17/2018] [Accepted: 07/30/2018] [Indexed: 12/24/2022]
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7
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Saito H, Kato S, Matsumoto K, Umino Y, Kita R, Shinyashiki N, Yagihara S, Fukuzaki M, Tokita M. Dynamic Behaviors of Solvent Molecules Restricted in Poly (Acryl Amide) Gels Analyzed by Dielectric and Diffusion NMR Spectroscopy. Gels 2018; 4:E56. [PMID: 30674832 PMCID: PMC6209249 DOI: 10.3390/gels4030056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 06/01/2018] [Accepted: 06/14/2018] [Indexed: 12/05/2022] Open
Abstract
Dynamics of solvent molecules restricted in poly (acryl amide) gels immersed in solvent mixtures of acetone⁻, 1,4-dioxane⁻, and dimethyl sulfoxide⁻water were analyzed by the time domain reflectometry method of dielectric spectroscopy and the pulse field gradient method of nuclear magnetic resonance. Restrictions of dynamic behaviors of solvent molecules were evaluated from relaxation parameters such as the relaxation time, its distribution parameter, and the relaxation strength obtained by dielectric measurements, and similar behaviors with polymer concentration dependences for the solutions were obtained except for the high polymer concentration in collapsed gels. Scaling analyses for the relaxation time and diffusion coefficient respectively normalized by those for bulk solvent suggested that the scaling exponent determined from the scaling variable defined as a ratio of the size of solvent molecule to mesh size of polymer networks were three and unity, respectively, except for collapsed gels. The difference in these components reflects characteristic molecular interactions in the rotational and translational diffusions, and offered a physical picture of the restriction of solvent dynamics. A universal treatment of slow dynamics due to the restriction from polymer chains suggests a new methodology of characterization of water structures.
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Affiliation(s)
- Hironobu Saito
- Graduate School of Science and Technology, Tokai University, Kanagawa 259-1292, Japan.
| | - Shunpei Kato
- Graduate School of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan.
| | - Keisuke Matsumoto
- Graduate School of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan.
| | - Yuya Umino
- Graduate School of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan.
| | - Rio Kita
- Graduate School of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan.
| | - Naoki Shinyashiki
- Graduate School of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan.
| | - Shin Yagihara
- Graduate School of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan.
| | - Minoru Fukuzaki
- Liberal Arts Education Center in Kumamoto, Tokai University, Toroku 9-1-1, Higashi-ku, Kumamoto-shi, Kumamoto 862-0970, Japan.
| | - Masayuki Tokita
- Graduate School of Science, Kyushu University, 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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8
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9
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Ianniello C, de Zwart JA, Duan Q, Deniz CM, Alon L, Lee JS, Lattanzi R, Brown R. Synthesized tissue-equivalent dielectric phantoms using salt and polyvinylpyrrolidone solutions. Magn Reson Med 2017; 80:413-419. [PMID: 29159985 DOI: 10.1002/mrm.27005] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 10/03/2017] [Accepted: 10/23/2017] [Indexed: 11/11/2022]
Abstract
PURPOSE To explore the use of polyvinylpyrrolidone (PVP) for simulated materials with tissue-equivalent dielectric properties. METHODS PVP and salt were used to control, respectively, relative permittivity and electrical conductivity in a collection of 63 samples with a range of solute concentrations. Their dielectric properties were measured with a commercial probe and fitted to a 3D polynomial in order to establish an empirical recipe. The material's thermal properties and MR spectra were measured. RESULTS The empirical polynomial recipe (available at https://www.amri.ninds.nih.gov/cgi-bin/phantomrecipe) provides the PVP and salt concentrations required for dielectric materials with permittivity and electrical conductivity values between approximately 45 and 78, and 0.1 to 2 siemens per meter, respectively, from 50 MHz to 4.5 GHz. The second- (solute concentrations) and seventh- (frequency) order polynomial recipe provided less than 2.5% relative error between the measured and target properties. PVP side peaks in the spectra were minor and unaffected by temperature changes. CONCLUSION PVP-based phantoms are easy to prepare and nontoxic, and their semitransparency makes air bubbles easy to identify. The polymer can be used to create simulated material with a range of dielectric properties, negligible spectral side peaks, and long T2 relaxation time, which are favorable in many MR applications. Magn Reson Med 80:413-419, 2018. © 2017 International Society for Magnetic Resonance in Medicine.
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Affiliation(s)
- Carlotta Ianniello
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA.,The Sackler Institute of Graduate Biomedical Science, New York University School of Medicine, New York, New York, USA
| | - Jacco A de Zwart
- Laboratory of Functional and Molecular Imaging, NINDS, National Institutes of Health, Bethesda, Maryland, USA
| | - Qi Duan
- Laboratory of Functional and Molecular Imaging, NINDS, National Institutes of Health, Bethesda, Maryland, USA
| | - Cem M Deniz
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA
| | - Leeor Alon
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA
| | - Jae-Seung Lee
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA
| | - Riccardo Lattanzi
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA.,The Sackler Institute of Graduate Biomedical Science, New York University School of Medicine, New York, New York, USA
| | - Ryan Brown
- Center for Advanced Imaging Innovation and Research (CAI2R) and Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York, USA
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10
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Miyara M, Takashima I, Sasaki K, Kita R, Shinyashiki N, Yagihara S. Dynamics of uncrystallized water in partially crystallized poly(ethylene glycol)–water mixtures studied by dielectric spectroscopy. Polym J 2017. [DOI: 10.1038/pj.2017.15] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Matsuo Y, Ikeda H, Kawabata T, Hatori J, Oyama H. Collagen-Based Fuel Cell and Its Proton Transfer. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/msa.2017.811054] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Sasaki K, Matsui Y, Miyara M, Kita R, Shinyashiki N, Yagihara S. Glass Transition and Dynamics of the Polymer and Water in the Poly(vinylpyrrolidone)–Water Mixtures Studied by Dielectric Relaxation Spectroscopy. J Phys Chem B 2016; 120:6882-9. [DOI: 10.1021/acs.jpcb.6b05347] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kaito Sasaki
- Department of Physics, School
of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan
| | - Yurika Matsui
- Department of Physics, School
of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan
| | - Masahiko Miyara
- Department of Physics, School
of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan
| | - Rio Kita
- Department of Physics, School
of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan
| | - Naoki Shinyashiki
- Department of Physics, School
of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan
| | - Shin Yagihara
- Department of Physics, School
of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa 259-1292, Japan
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13
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Sasaki K, Kita R, Shinyashiki N, Yagihara S. Glass transition of partially crystallized gelatin-water mixtures studied by broadband dielectric spectroscopy. J Chem Phys 2014; 140:124506. [DOI: 10.1063/1.4869346] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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14
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Kishikawa Y, Seki Y, Shingai K, Kita R, Shinyashiki N, Yagihara S. Dielectric Relaxation for Studying Molecular Dynamics of Pullulan in Water. J Phys Chem B 2013; 117:9034-41. [DOI: 10.1021/jp403606r] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuki Kishikawa
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Yuki Seki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Kou Shingai
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Rio Kita
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Naoki Shinyashiki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Shin Yagihara
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
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15
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Shinyashiki N, Miyara M, Nakano S, Yamamoto W, Ueshima M, Imoto D, Sasaki K, Kita R, Yagihara S. Dielectric relaxation strength and magnitude of dipole moment of poly(vinyl pyrrolidone)in polar solutions. J Mol Liq 2013. [DOI: 10.1016/j.molliq.2013.02.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Paudel A, Nies E, Van den Mooter G. Relating Hydrogen-Bonding Interactions with the Phase Behavior of Naproxen/PVP K 25 Solid Dispersions: Evaluation of Solution-Cast and Quench-Cooled Films. Mol Pharm 2012; 9:3301-17. [DOI: 10.1021/mp3003495] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Amrit Paudel
- Laboratory of Pharmacotechnology
and Biopharmacy, KU Leuven, Leuven, Belgium
| | - Erik Nies
- Department of Chemistry, Polymer
Chemistry and Materials, KU Leuven, Heverlee, Belgium
| | - Guy Van den Mooter
- Laboratory of Pharmacotechnology
and Biopharmacy, KU Leuven, Leuven, Belgium
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17
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Leroux F, Chabrol K, Thérias S, Gardette J, de Roy A. Formation of Single-Layered Double-Hydroxide Platelets in Poly(vinylpyrrolidone) and Alginate Medium: Conductive, Capacitive, and Dielectric Properties of the Hybrid Films. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200509] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fabrice Leroux
- Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont‐Ferrand, BP 10448, 63000 Clermont‐Ferrand, France, Fax: +33‐4‐73407108, http://iccf.univ‐bpclermont.fr
- CNRS, UMR 6096, ICCF, 63177 Aubière, France
| | - Karine Chabrol
- Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont‐Ferrand, BP 10448, 63000 Clermont‐Ferrand, France, Fax: +33‐4‐73407108, http://iccf.univ‐bpclermont.fr
- CNRS, UMR 6096, ICCF, 63177 Aubière, France
| | - Sandrine Thérias
- Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont‐Ferrand, BP 10448, 63000 Clermont‐Ferrand, France, Fax: +33‐4‐73407108, http://iccf.univ‐bpclermont.fr
- CNRS, UMR 6096, ICCF, 63177 Aubière, France
| | - Jean‐Luc Gardette
- Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont‐Ferrand, BP 10448, 63000 Clermont‐Ferrand, France, Fax: +33‐4‐73407108, http://iccf.univ‐bpclermont.fr
- CNRS, UMR 6096, ICCF, 63177 Aubière, France
| | - André de Roy
- Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont‐Ferrand, BP 10448, 63000 Clermont‐Ferrand, France, Fax: +33‐4‐73407108, http://iccf.univ‐bpclermont.fr
- CNRS, UMR 6096, ICCF, 63177 Aubière, France
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Busselez R, Arbe A, Cerveny S, Capponi S, Colmenero J, Frick B. Component dynamics in polyvinylpyrrolidone concentrated aqueous solutions. J Chem Phys 2012; 137:084902. [DOI: 10.1063/1.4746020] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Nakano S, Sato Y, Kita R, Shinyashiki N, Yagihara S, Sudo S, Yoneyama M. Molecular Dynamics of Poly(N-isopropylacrylamide) in Protic and Aprotic Solvents Studied by Dielectric Relaxation Spectroscopy. J Phys Chem B 2012; 116:775-81. [DOI: 10.1021/jp210376u] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shinya Nakano
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Yasuhiro Sato
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Rio Kita
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Naoki Shinyashiki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Shin Yagihara
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Seiichi Sudo
- Department of Physics, General Education Center, Tokyo City University, Tamazutsumi, Setagaya, Tokyo 158-8557, Japan
| | - Masaru Yoneyama
- Department of Chemistry and Chemical Biology, Gunma University, Kiryu, Gunma 376-8515, Japan
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20
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Sarode AV, Kumbharkhane AC. Dielectric relaxation and thermodynamic properties of polyvinylpyrrolidone using time domain reflectometry. POLYM INT 2011. [DOI: 10.1002/pi.3217] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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21
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Shinyashiki N, Spanoudaki A, Yamamoto W, Nambu E, Yoneda K, Kyritsis A, Pissis P, Kita R, Yagihara S. Segmental Relaxation of Hydrophilic Poly(vinylpyrrolidone) in Chloroform Studied by Broadband Dielectric Spectroscopy. Macromolecules 2011. [DOI: 10.1021/ma102394s] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Naoki Shinyashiki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Anna Spanoudaki
- Department of Applied Mathematics and Physics, National Technical University of Athens, Heroon Polytechneiou 9, 15780 Athens, Greece
| | - Wataru Yamamoto
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Eri Nambu
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Kaoru Yoneda
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Apostolos Kyritsis
- Department of Applied Mathematics and Physics, National Technical University of Athens, Heroon Polytechneiou 9, 15780 Athens, Greece
| | - Polycarpos Pissis
- Department of Applied Mathematics and Physics, National Technical University of Athens, Heroon Polytechneiou 9, 15780 Athens, Greece
| | - Rio Kita
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Shin Yagihara
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
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Nakanishi M, Sasaki Y, Nozaki R. New sample cell configuration for wide-frequency dielectric spectroscopy: DC to radio frequencies. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2010; 81:123902. [PMID: 21198035 DOI: 10.1063/1.3518940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A new configuration for the sample cell to be used in broadband dielectric spectroscopy is presented. A coaxial structure with a parallel plate capacitor (outward parallel plate cell: OPPC) has made it possible to extend the frequency range significantly in comparison with the frequency range of the conventional configuration. In the proposed configuration, stray inductance is significantly decreased; consequently, the upper bound of the frequency range is improved by two orders of magnitude from the upper limit of conventional parallel plate capacitor (1 MHz). Furthermore, the value of capacitance is kept high by using a parallel plate configuration. Therefore, the precision of the capacitance measurement in the lower frequency range remains sufficiently high. Finally, OPPC can cover a wide frequency range (100 Hz-1 GHz) with an appropriate admittance measuring apparatus such as an impedance or network analyzer. The OPPC and the conventional dielectric cell are compared by examining the frequency dependence of the complex permittivity for several polar liquids and polymeric films.
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Affiliation(s)
- Masahiro Nakanishi
- Department of Physics, Faculty of Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.
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23
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Kundu SK, Yagihara S, Yoshida M, Shibayama M. Microwave Dielectric Study of an Oligomeric Electrolyte Gelator by Time Domain Reflectometry. J Phys Chem B 2009; 113:10112-6. [PMID: 19572678 DOI: 10.1021/jp901043h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shyamal Kumar Kundu
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan, Department of Physics, School of Science, Tokai University, 1117 Kitakanane, Hiratsuka, Kanagawa 259-1292, Japan, and Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Shin Yagihara
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan, Department of Physics, School of Science, Tokai University, 1117 Kitakanane, Hiratsuka, Kanagawa 259-1292, Japan, and Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Masaru Yoshida
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan, Department of Physics, School of Science, Tokai University, 1117 Kitakanane, Hiratsuka, Kanagawa 259-1292, Japan, and Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Mitsuhiro Shibayama
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan, Department of Physics, School of Science, Tokai University, 1117 Kitakanane, Hiratsuka, Kanagawa 259-1292, Japan, and Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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24
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Sengwa RJ, Choudhary S, Sankhla S. Dielectric behaviour and relaxation processes of montmorillonite clay nano-platelet colloidal suspensions in poly(vinyl pyrrolidone)-ethylene glycol oligomer blends. POLYM INT 2009. [DOI: 10.1002/pi.2592] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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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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26
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Cerveny S, Alegría Á, Colmenero J. Broadband dielectric investigation on poly(vinyl pyrrolidone) and its water mixtures. J Chem Phys 2008; 128:044901. [DOI: 10.1063/1.2822332] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Shinyashiki N, Shimomura M, Ushiyama T, Miyagawa T, Yagihara S. Dynamics of Water in Partially Crystallized Polymer/Water Mixtures Studied by Dielectric Spectroscopy. J Phys Chem B 2007; 111:10079-87. [PMID: 17676792 DOI: 10.1021/jp0730489] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The dielectric relaxation process of water was investigated for polymer/water mixtures containing poly(vinyl methyl ether), poly(ethyleneimine), poly(vinyl alcohol), and poly(vinylpyrrolidone) with a polymer concentration of up to 40 wt % at frequencies between 10 MHz and 10 GHz in subzero temperatures down to -55 degrees C. These polymer/water mixtures have a crystallization temperature TC of water at -10 to -2 degrees C. Below TC, part of the water crystallized and another part of the water, uncrystallized water (UCW), remained in a liquid state with the polymer in an uncrystallized phase. The dielectric relaxation process of UCW was observed, and reliable dielectric relaxation parameters of UCW were obtained at temperatures of -26 to -2 degrees C. At TC, the relaxation strength, relaxation time, and relaxation time distribution change abruptly, and their subsequent changes with decreasing temperature are larger than those above TC. The relaxation strength of UCW decreases, and the relaxation time and dynamic heterogeneity (distribution of relaxation time) increase with decreasing temperature. These large temperature dependences below TC can be explained by the increase in polymer concentration in the uncrystallized phase C(p,UCP) with decreasing temperature. C(p,UCP) is independent of the initial polymer concentration. In contrast to the relaxation times above TC, which vary with the chemical structure of the polymer and its concentration, the relaxation times of UCW are independent of both of them. This indicates that the factor determining whether the water forms ice crystals or stays as UCW is the mobility of the water molecules.
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Affiliation(s)
- Naoki Shinyashiki
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan.
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