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Dallari F, Lokteva I, Möller J, Roseker W, Goy C, Westermeier F, Boesenberg U, Hallmann J, Rodriguez-Fernandez A, Scholz M, Shayduk R, Madsen A, Grübel G, Lehmkühler F. Real-time swelling-collapse kinetics of nanogels driven by XFEL pulses. SCIENCE ADVANCES 2024; 10:eadm7876. [PMID: 38640237 PMCID: PMC11029799 DOI: 10.1126/sciadv.adm7876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 03/18/2024] [Indexed: 04/21/2024]
Abstract
Stimuli-responsive polymers are an important class of materials with many applications in nanotechnology and drug delivery. The most prominent one is poly-N-isopropylacrylamide (PNIPAm). The characterization of the kinetics of its change after a temperature jump is still a lively research topic, especially at nanometer-length scales where it is not possible to rely on conventional microscopic techniques. Here, we measured in real time the collapse of a PNIPAm shell on silica nanoparticles with megahertz x-ray photon correlation spectroscopy at the European XFEL. We characterize the changes of the particles diffusion constant as a function of time and consequently local temperature on sub-microsecond timescales. We developed a phenomenological model to describe the observed data and extract the characteristic times associated to the swelling and collapse processes. Different from previous studies tracking the turbidity of PNIPAm dispersions and using laser heating, we find collapse times below microsecond timescales and two to three orders of magnitude slower swelling times.
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Affiliation(s)
- Francesco Dallari
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- Department of Physics and Astronmy, University of Padua, Via Marzolo 8, 35131 Padova, Italy
| | - Irina Lokteva
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Johannes Möller
- European X-Ray Free-Electron Laser Facility, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Wojciech Roseker
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Claudia Goy
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Fabian Westermeier
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
| | - Ulrike Boesenberg
- European X-Ray Free-Electron Laser Facility, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Jörg Hallmann
- European X-Ray Free-Electron Laser Facility, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | - Markus Scholz
- European X-Ray Free-Electron Laser Facility, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Roman Shayduk
- European X-Ray Free-Electron Laser Facility, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Anders Madsen
- European X-Ray Free-Electron Laser Facility, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Gerhard Grübel
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany
- European X-Ray Free-Electron Laser Facility, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Felix Lehmkühler
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany
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Papadakis CM, Niebuur BJ, Schulte A. Thermoresponsive Polymers under Pressure with a Focus on Poly( N-isopropylacrylamide) (PNIPAM). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1-20. [PMID: 38149782 DOI: 10.1021/acs.langmuir.3c02398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Pressure is a key variable in the phase behavior of responsive polymers, both for applications and from a fundamental point of view. In this feature article, we review recent developments, particularly applications of neutron techniques such as small-angle neutron scattering (SANS) and quasi-elastic neutron scattering (QENS), across the temperature-pressure phase diagram. These are complemented by kinetic SANS experiments following pressure jumps. In the prototype system poly(N-isopropylacrylamide) (PNIPAM), QENS revealed the pressure-dependent characteristics of hydration water around the lower critical solution temperature transition. The size, water content, and inner structure of the mesoglobules formed in the two-phase region depend strongly on pressure, as shown by SANS. Beside these changes at the phase transition, the mesoglobule formation at low pressure is determined by kinetic factors, namely the formation of a polymer-rich, rigid shell, which hampers further growth by coalescence. At high pressure, in contrast, the growth proceeds by diffusion-limited coalescence without any kinetic hindrance. The disintegration of the mesoglobules evolves either via chain release from their surface or via swelling, depending on the osmotic pressure of the water. Moreover, we report on the profound influence of pressure on the cononsolvency effect. In the temperature-pressure frame, the one-phase region is hugely expanded upon the addition of the cosolvent methanol. SANS experiments unveil the enthalpic and entropic contributions to the effective Flory-Huggins interaction parameter between the segments and the solvent mixture. QENS experiments demonstrate an increase in polymer associated water with pressure, whereas methanol is released. Correspondingly, the solvent phase becomes enriched in methanol, providing a mechanism for the breakdown of cononsolvency at a high pressure. Finally, we outline future opportunities for high-pressure studies of thermoresponsive polymers, with a focus on neutron methods.
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Affiliation(s)
- Christine M Papadakis
- TUM School of Natural Sciences, Physics Department, Soft Matter Physics Group, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
| | - Bart-Jan Niebuur
- TUM School of Natural Sciences, Physics Department, Soft Matter Physics Group, Technical University of Munich, James-Franck-Str. 1, 85748 Garching, Germany
| | - Alfons Schulte
- Department of Physics and College of Optics and Photonics, University of Central Florida, 4111 Libra Drive, Orlando, Florida 32816-2385, United States
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Micciulla S, Gutfreund P, Kanduč M, Chiappisi L. Pressure-Induced Phase Transitions of Nonionic Polymer Brushes. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c01979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Samantha Micciulla
- Institut Max von Laue - Paul Langevin, 71 avenue des Martyrs, 38042Grenoble, France
| | - Philipp Gutfreund
- Institut Max von Laue - Paul Langevin, 71 avenue des Martyrs, 38042Grenoble, France
| | - Matej Kanduč
- Jožef Stefan Institute, Jamova 39, SI-1000Ljubljana, Slovenia
| | - Leonardo Chiappisi
- Institut Max von Laue - Paul Langevin, 71 avenue des Martyrs, 38042Grenoble, France
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4
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Cononsolvency of the responsive polymer poly(N-isopropylacrylamide) in water/methanol mixtures: a dynamic light scattering study of the effect of pressure on the collective dynamics. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-04987-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Abstract
The collective dynamics of 25 wt% poly(N-isopropylacrylamide) (PNIPAM) solutions in water or an 80:20 v/v water/methanol mixture are investigated in the one-phase region in dependence on pressure and temperature using dynamic light scattering. Throughout, two dynamic modes are observed, the fast one corresponding to the relaxation of the chain segments within the polymer blobs and the slow one to the relaxation of the blobs. A pressure scan in the one-phase region on an aqueous solution at 34.0 °C, i.e., slightly below the maximum of the coexistence line, reveals that the dynamic correlation length of the fast mode increases when the left and the right branch of the coexistence line are approached. Thus, the chains are rather swollen far away from the coexistence line, but contracted near the phase transition. Temperature scans of solutions in neat H2O or in H2O/CD3OD at 0.1, 130, and 200 MPa reveal that the dynamic correlation length of the fast mode shows critical behavior. However, the critical exponents are significantly larger than the value predicted by mean-field theory for the static correlation length, ν = 0.5, and the exponent is significantly larger for the solution in the H2O/CD3OD mixture than in neat H2O.
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SAXS-based study of crosslinking homogeneity in bio-based complexes prepared via the Maillard reaction between cationic polyelectrolytes and fructose. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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6
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Niebuur BJ, Lohstroh W, Ko CH, Appavou MS, Schulte A, Papadakis CM. Pressure Dependence of Water Dynamics in Concentrated Aqueous Poly( N-isopropylacrylamide) Solutions with a Methanol Cosolvent. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00111] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bart-Jan Niebuur
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Wiebke Lohstroh
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany
| | - Chia-Hsin Ko
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Marie-Sousai Appavou
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstr. 1, 85748 Garching, Germany
| | - Alfons Schulte
- Department of Physics and College of Optics and Photonics, University of Central Florida, 4111 Libra Drive, Orlando, Florida 32816-2385, United States
| | - Christine M. Papadakis
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
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Kim J, Oh I, Park S, Nguyen NQ, Ryu J, Sohn D. Characteristics of self-healable laponite-poly(N-isopropylacrylamide) hydrogels prepared by γ-ray irradiation. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Niebuur BJ, Ko CH, Zhang X, Claude KL, Chiappisi L, Schulte A, Papadakis CM. Pressure Dependence of the Cononsolvency Effect in Aqueous Poly(N-isopropylacrylamide) Solutions: A SANS Study. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00489] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bart-Jan Niebuur
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Chia-Hsin Ko
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Xiaohan Zhang
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Kora-Lee Claude
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Leonardo Chiappisi
- Large Scale Structures Group, Institut Laue-Langevin, 71, Avenue des Martyrs, CS 20 156, 38042 Grenoble, France
- Stranski Laboratorium für Physikalische Chemie und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 124, Sekr. TC7, D-10623 Berlin, Germany
| | - Alfons Schulte
- Department of Physics and College of Optics and Photonics, University of Central Florida, 4111 Libra Drive, Orlando, Florida 32816, United States
| | - Christine M. Papadakis
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
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9
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Osaka N, Okauchi K, Eki Y, Noda Y. Unexpected cosolvency of water on poly(propylene glycol) in hydrophobic ionic liquid. Colloid Polym Sci 2019. [DOI: 10.1007/s00396-019-04551-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Niebuur BJ, Chiappisi L, Jung F, Zhang X, Schulte A, Papadakis CM. Kinetics of Mesoglobule Formation and Growth in Aqueous Poly(N-isopropylacrylamide) Solutions: Pressure Jumps at Low and at High Pressure. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00937] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Bart-Jan Niebuur
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Leonardo Chiappisi
- Large Scale Structures Group, Institut Laue-Langevin, 71, Avenue des Martyrs, 38042 Grenoble, France
- Stranski Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 124, Sekr. TC7, D-10623 Berlin, Germany
| | - Florian Jung
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Xiaohan Zhang
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
| | - Alfons Schulte
- Department of Physics and College of Optics and Photonics, University of Central Florida, 4111 Libra Drive, Orlando, Florida 32816-2385, United States
| | - Christine M. Papadakis
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Straße 1, 85748 Garching, Germany
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11
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Niebuur BJ, Lohstroh W, Appavou MS, Schulte A, Papadakis CM. Water Dynamics in a Concentrated Poly(N-isopropylacrylamide) Solution at Variable Pressure. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02708] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Bart-Jan Niebuur
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Wiebke Lohstroh
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany
| | - Marie-Sousai Appavou
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstr. 1, 85748 Garching, Germany
| | - Alfons Schulte
- Department of Physics and College of Optics and Photonics, University of Central Florida, 4111 Libra Drive, Orlando, Florida 32816-2385, United States
| | - Christine M. Papadakis
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
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12
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Lopez CG, Scotti A, Brugnoni M, Richtering W. The Swelling of Poly(Isopropylacrylamide) Near the θ Temperature: A Comparison between Linear and Cross‐Linked Chains. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800421] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Carlos G. Lopez
- Dr. C. G. Lopez, Dr. A. Scotti, M. Brugnoni, Prof. W. RichteringInstitute of Physical ChemistryRWTH Aachen University Landoltweg 2 52056 Aachen Germany
| | - Andrea Scotti
- Dr. C. G. Lopez, Dr. A. Scotti, M. Brugnoni, Prof. W. RichteringInstitute of Physical ChemistryRWTH Aachen University Landoltweg 2 52056 Aachen Germany
| | - Monia Brugnoni
- Dr. C. G. Lopez, Dr. A. Scotti, M. Brugnoni, Prof. W. RichteringInstitute of Physical ChemistryRWTH Aachen University Landoltweg 2 52056 Aachen Germany
| | - Walter Richtering
- Dr. C. G. Lopez, Dr. A. Scotti, M. Brugnoni, Prof. W. RichteringInstitute of Physical ChemistryRWTH Aachen University Landoltweg 2 52056 Aachen Germany
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13
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Niebuur BJ, Chiappisi L, Zhang X, Jung F, Schulte A, Papadakis CM. Formation and Growth of Mesoglobules in Aqueous Poly( N-isopropylacrylamide) Solutions Revealed with Kinetic Small-Angle Neutron Scattering and Fast Pressure Jumps. ACS Macro Lett 2018; 7:1155-1160. [PMID: 35651267 DOI: 10.1021/acsmacrolett.8b00605] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The phase transition from swollen chains to polymer mesoglobules of an aqueous solution of poly(N-isopropylacrylamide) is investigated with kinetic small-angle neutron scattering with 50 ms time resolution in conjunction with millisecond pressure jumps across the coexistence line. The time-resolved study evidenced three distinct regimes: fractal clusters form during the first second and transform into compact mesoglobules. During the following ∼20 s, these grow by diffusion-limited coalescence. The final step consists of a slow growth characterized by an energy barrier of several kBT. The method opens opportunities for kinetic structural studies of multicomponent systems over wide length and time scales and gives a structural picture spanning from the chain collapse to mesoscopic phase separation.
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Affiliation(s)
- Bart-Jan Niebuur
- Technische Universität München, Physik-Department, Fachgebiet Physik weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany
| | - Leonardo Chiappisi
- Institut Laue-Langevin, Large Scale Structures Group, 6, rue Jules Horowitz, 38042 Grenoble, France
- Technische Universität Berlin, Stranski Laboratorium für Physikalische Chemie und Theoretische Chemie, Institut für Chemie, Straße des 17. Juni 124, Sekr. TC7, D-10623 Berlin, Germany
| | - Xiaohan Zhang
- Technische Universität München, Physik-Department, Fachgebiet Physik weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany
| | - Florian Jung
- Technische Universität München, Physik-Department, Fachgebiet Physik weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany
| | - Alfons Schulte
- Department of Physics and College of Optics and Photonics, University of Central Florida, 4111 Libra Drive, Orlando, Florida 32816-2385, United States
| | - Christine M. Papadakis
- Technische Universität München, Physik-Department, Fachgebiet Physik weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany
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14
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Hou SS, Fan NS, Tseng YC, Jan JS. Self-Assembly and Hydrogelation of Coil–Sheet Poly(l-lysine)-block-poly(l-threonine) Block Copolypeptides. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01265] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sheng-Shu Hou
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
- Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 70101, Taiwan
| | - Nai-Shin Fan
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Yu-Chao Tseng
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Jeng-Shiung Jan
- Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan
- Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 70101, Taiwan
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15
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Ryu J, Lee H, Kim H, Sohn D. Lamellar Thickness of Poly(ethylene oxide) Film Crystallized from the Gel State. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01232] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Jungju Ryu
- Neutron Science Center, Korea Atomic Energy Research Institute, Daejeon 34057, Korea
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Korea
| | - Hoik Lee
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Korea
- Nano Fusion Technology Research Group, Division of Frontier Fibers, Institute for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting Edge Research (ICCER), Shinshu University, Nagano 386-8567, Japan
| | - Hyosin Kim
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Korea
| | - Daewon Sohn
- Department of Chemistry and Research Institute for Convergence of Basic Science, Hanyang University, Seoul 04763, Korea
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16
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Synthesis and hydrogelation of star-shaped poly(l-lysine) polypeptides modified with different functional groups. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.07.051] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Niebuur BJ, Puchmayr J, Herold C, Kreuzer LP, Hildebrand V, Müller-Buschbaum P, Laschewsky A, Papadakis CM. Polysulfobetaines in Aqueous Solution and in Thin Film Geometry. MATERIALS 2018; 11:ma11050850. [PMID: 29883371 PMCID: PMC5978227 DOI: 10.3390/ma11050850] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 05/16/2018] [Accepted: 05/17/2018] [Indexed: 11/29/2022]
Abstract
Polysulfobetaines in aqueous solution show upper critical solution temperature (UCST) behavior. We investigate here the representative of this class of materials, poly (N,N-dimethyl-N-(3-methacrylamidopropyl) ammonio propane sulfonate) (PSPP), with respect to: (i) the dynamics in aqueous solution above the cloud point as function of NaBr concentration; and (ii) the swelling behavior of thin films in water vapor as function of the initial film thickness. For PSPP solutions with a concentration of 5 wt.%, the temperature dependence of the intensity autocorrelation functions is measured with dynamic light scattering as function of molar mass and NaBr concentration (0–8 mM). We found a scaling of behavior for the scattered intensity and dynamic correlation length. The resulting spinodal temperatures showed a maximum at a certain (small) NaBr concentration, which is similar to the behavior of the cloud points measured previously by turbidimetry. The critical exponent of susceptibility depends on NaBr concentration, with a minimum value where the spinodal temperature is maximum and a trend towards the mean-field value of unity with increasing NaBr concentration. In contrast, the critical exponent of the correlation length does not depend on NaBr concentration and is lower than the value of 0.5 predicted by mean-field theory. For PSPP thin films, the swelling behavior was found to depend on film thickness. A film thickness of about 100 nm turns out to be the optimum thickness needed to obtain fast hydration with H2O.
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Affiliation(s)
- Bart-Jan Niebuur
- Physik-Department, Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle Materialien, Technische Universität München, 85748 Garching, Germany.
| | - Jonas Puchmayr
- Physik-Department, Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle Materialien, Technische Universität München, 85748 Garching, Germany.
| | - Christian Herold
- Physik-Department, Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle Materialien, Technische Universität München, 85748 Garching, Germany.
| | - Lucas P Kreuzer
- Physik-Department, Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle Materialien, Technische Universität München, 85748 Garching, Germany.
| | - Viet Hildebrand
- Institut für Chemie, Universität Potsdam, 14476 Potsdam-Golm, Germany.
| | - Peter Müller-Buschbaum
- Physik-Department, Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle Materialien, Technische Universität München, 85748 Garching, Germany.
| | - André Laschewsky
- Institut für Chemie, Universität Potsdam, 14476 Potsdam-Golm, Germany.
- Fraunhofer Institut für Angewandte Polymerforschung, Geiselbergstr. 69, 14476 Potsdam-Golm, Germany.
| | - Christine M Papadakis
- Physik-Department, Fachgebiet Physik weicher Materie/Lehrstuhl für Funktionelle Materialien, Technische Universität München, 85748 Garching, Germany.
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18
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Schweikle M, Zinn T, Lund R, Tiainen H. Injectable synthetic hydrogel for bone regeneration: Physicochemical characterisation of a high and a low pH gelling system. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 90:67-76. [PMID: 29853138 DOI: 10.1016/j.msec.2018.04.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 04/13/2018] [Accepted: 04/16/2018] [Indexed: 12/26/2022]
Abstract
Hybrid poly(ethylene glycol)-co-peptide hydrogels are a versatile platform for bone regeneration. For the use as injectable scaffolds, a good understanding of reaction kinetics and physical properties is vital. However, these factors have not yet been comprehensively illuminated. We show that gelation time can be effectively controlled by pH without affecting the elasticity of the formed hydrogels. Maleimide functionalised PEG gels at lower pH and produces more densely cross-linked networks than vinylsulfone functionalised PEG. Both form non-ideal networks. The elastic moduli on the order of a few kPa are in good agreement with the structural characterisation. Primary human osteoblasts cultured in proximity to bulk gels were not adversely affected in vitro. The results demonstrate that hybrid PEG-peptide hydrogels can be tailored to the requirements of in situ gelation. Attributed to their increased structural properties and a higher tolerance towards low pH, maleimide functionalised hydrogels might provide a better alternative for injectable applications.
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Affiliation(s)
- Manuel Schweikle
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, Geitmyrsveien 69-71, 0455 Oslo, Norway.
| | - Thomas Zinn
- Department of Chemistry, University of Oslo, Sem Sælands vei 26, 0371 Oslo, Norway
| | - Reidar Lund
- Department of Chemistry, University of Oslo, Sem Sælands vei 26, 0371 Oslo, Norway
| | - Hanna Tiainen
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, Geitmyrsveien 69-71, 0455 Oslo, Norway
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19
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Gilbert T, Alsop RJ, Babi M, Moran-Mirabal J, Rheinstädter MC, Hoare T. Nanostructure of Fully Injectable Hydrazone-Thiosuccinimide Interpenetrating Polymer Network Hydrogels Assessed by Small-Angle Neutron Scattering and dSTORM Single-Molecule Fluorescence Microscopy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:42179-42191. [PMID: 29131571 DOI: 10.1021/acsami.7b11637] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Herein, we comprehensively investigate the internal morphology of fully injectable interpenetrating networks (IPNs) prepared via coextrusion of functionalized precursor polymer solutions based on thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) and nonthermoresponsive poly(vinyl pyrrolidone) (PVP) by reactive mixing using kinetically orthogonal hydrazone and thiosuccinimide cross-linking mechanisms. Small-angle neutron scattering, probing both the full IPN as well as the individual constituent networks of the IPN using index-matching, suggests a partially mixed internal structure characterized by PNIPAM-rich domains entrapped in a clustered PVP-rich phase. This interpretation is supported by super-resolution fluorescence microscopy (direct stochastic optical reconstruction microscopy) measurements on the same gels on a different length scale, which show both the overall phase segregation typical of an IPN as well as moderate mixing of PNIPAM into the PVP-rich phase. Such a morphology is consistent with the kinetics of both gelation and phase separation in this in situ gelling system, in which gelation effectively traps a fraction of the PNIPAM in the PVP phase prior to full phase separation; by contrast, such interphase mixing is not observed in semi-IPN control hydrogels. This knowledge has significant potential for the design of an injectable hydrogel with internal morphologies optimized for particular biomedical applications.
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Affiliation(s)
- Trevor Gilbert
- Department of Chemical Engineering, McMaster University , 1280 Main St. W, Hamilton, Ontario L8S 4L7, Canada
| | | | | | | | | | - Todd Hoare
- Department of Chemical Engineering, McMaster University , 1280 Main St. W, Hamilton, Ontario L8S 4L7, Canada
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20
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Niebuur BJ, Claude KL, Pinzek S, Cariker C, Raftopoulos KN, Pipich V, Appavou MS, Schulte A, Papadakis CM. Pressure-Dependence of Poly( N-isopropylacrylamide) Mesoglobule Formation in Aqueous Solution. ACS Macro Lett 2017; 6:1180-1185. [PMID: 35650792 DOI: 10.1021/acsmacrolett.7b00563] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Above their cloud point, aqueous solutions of the thermoresponsive polymer poly(N-isopropylacrylamide) (PNIPAM) form large mesoglobules. We have carried out very small-angle neutron scattering (VSANS with q = 0.21-2.3 × 10-3 Å-1) and Raman spectroscopy experiments on a 3 wt % PNIPAM solution in D2O at atmospheric and elevated pressures (up to 113 MPa). Raman spectroscopy reveals that, at high pressure, the polymer is less dehydrated upon crossing the cloud point. VSANS shows that the mesoglobules are significantly larger and contain more D2O than at atmospheric pressure. We conclude that the size of the mesoglobules and thus their growth process are closely related to the hydration state of PNIPAM.
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Affiliation(s)
- Bart-Jan Niebuur
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Kora-Lee Claude
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Simon Pinzek
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Coleman Cariker
- Department
of Physics and College of Optics and Photonics, University of Central Florida, 2385 Central Florida Boulevard, Orlando, Florida 32816, United States
| | - Konstantinos N. Raftopoulos
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Vitaliy Pipich
- Jülich
Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum
(MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstr. 1, 85748 Garching, Germany
| | - Marie-Sousai Appavou
- Jülich
Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum
(MLZ), Forschungszentrum Jülich GmbH, Lichtenbergstr. 1, 85748 Garching, Germany
| | - Alfons Schulte
- Department
of Physics and College of Optics and Photonics, University of Central Florida, 2385 Central Florida Boulevard, Orlando, Florida 32816, United States
| | - Christine M. Papadakis
- Physik-Department, Fachgebiet Physik weicher Materie, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
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21
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Steinschulte AA, Scotti A, Rahimi K, Nevskyi O, Oppermann A, Schneider S, Bochenek S, Schulte MF, Geisel K, Jansen F, Jung A, Mallmann S, Winter R, Richtering W, Wöll D, Schweins R, Warren NJ, Plamper FA. Stimulated Transitions of Directed Nonequilibrium Self-Assemblies. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1703495. [PMID: 29024083 DOI: 10.1002/adma.201703495] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 08/17/2017] [Indexed: 06/07/2023]
Abstract
Near-equilibrium stimulus-responsive polymers have been used extensively to introduce morphological variations in dependence of adaptable conditions. Far-less-well studied are triggered transformations at constant conditions. These require the involvement of metastable states, which are either able to approach the equilibrium state after deviation from metastability or can be frozen on returning from nonequilibrium to equilibrium. Such functional nonequilibrium macromolecular systems hold great promise for on-demand transformations, which result in substantial changes in their material properties, as seen for triggered gelations. Herein, a diblock copolymer system consisting of a hydrophilic block and a block that is responsive to both pressure and temperature, is introduced. This species demonstrates various micellar transformations upon leaving equilibrium/nonequilibrium states, which are triggered by a temperature deflection or a temporary application of hydrostatic pressure.
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Affiliation(s)
| | - Andrea Scotti
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Khosrow Rahimi
- DWI Leibniz Institute for Interactive Materials and Center for Chemical Polymer Technology (CPT), Forckenbeckstr. 50, D-52074, Aachen, Germany
| | - Oleksii Nevskyi
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Alex Oppermann
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Sabine Schneider
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Steffen Bochenek
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Marie F Schulte
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Karen Geisel
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Felicitas Jansen
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Andre Jung
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Sabrina Mallmann
- DWI Leibniz Institute for Interactive Materials and Center for Chemical Polymer Technology (CPT), Forckenbeckstr. 50, D-52074, Aachen, Germany
| | - Roland Winter
- Department of Chemistry and Chemical Biology, Physical Chemistry I, TU Dortmund University, Otto-Hahn Str. 6, D-44227, Dortmund, Germany
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Dominik Wöll
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Ralf Schweins
- Institut Laue-Langevin ILL, DS/LSS, 71 Avenue des Martyrs, F-38000, Grenoble, France
| | - Nicholas J Warren
- School of Chemical and Process Engineering, University of Leeds, Leeds, LS2 9JT, UK
| | - Felix A Plamper
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
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22
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Supramolecular structure of methyl cellulose and lambda- and kappa-carrageenan in water: SAXS study using the string-of-beads model. Carbohydr Polym 2017; 172:184-196. [PMID: 28606524 DOI: 10.1016/j.carbpol.2017.04.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/11/2017] [Accepted: 04/18/2017] [Indexed: 12/24/2022]
Abstract
A detailed data analysis utilizing the string-of-beads model was performed on experimental small-angle X-ray scattering (SAXS) curves in a targeted structural study of three, very important, industrial polysaccharides. The results demonstrate the quality of performance for this model on three polymers with quite different thermal structural behavior. Furthermore, they show the advantages of the model used by way of excellent fits in the ranges where the classic approach to the small-angle scattering data interpretation fails and an additional 3D visualization of the model's molecular conformations and anticipated polysaccharide supramolecular structure. The importance of this study is twofold: firstly, the methodology used and, secondly, the structural details of important biopolymers that are widely applicable in practice.
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23
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Preparation of poly(N-isopropylacrylamide)/montmorillonite composite hydrogel by frontal polymerization. Colloid Polym Sci 2017. [DOI: 10.1007/s00396-017-4066-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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24
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Hirosawa K, Fujii K, Ueki T, Kitazawa Y, Watanabe M, Shibayama M. Pressure Response of a Thermoresponsive Polymer in an Ionic Liquid. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01987] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kazu Hirosawa
- Institute
for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Kenta Fujii
- Graduate
School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
| | - Takeshi Ueki
- Polymer
Materials Unit, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044 Japan
| | - Yuzo Kitazawa
- Department
of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai,
Hodogaya-ku, Yokohama 240-8501, Japan
| | - Masayoshi Watanabe
- Department
of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai,
Hodogaya-ku, Yokohama 240-8501, Japan
| | - Mitsuhiro Shibayama
- Institute
for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
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25
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Joshi N, Rawat K, Aswal V, Bohidar H. Smoluchowski aggregation kinetics, gelation, ergodicity breaking and aging dynamics of (1:1) Laponite-Montmorillonite mixed clay dispersions. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.04.045] [Citation(s) in RCA: 2] [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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Chen L, Sun L, Wang Y, Wang Y, Zou L, Yan G, Chen J, Tian Q, Peng M, Gong J, Chen B, Sun G, Liu D. Small-angle neutron scattering spectrometer Suanni equipped with ultra-thin biconcave focusing lenses. J Appl Crystallogr 2016. [DOI: 10.1107/s1600576716007950] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The small-angle neutron scattering (SANS) spectrometer Suanni at the liquid hydrogen cold neutron source of the 20 MW China Mianyang Research Reactor has recently been upgraded. Ultra-thin biconcave MgF2lenses with a central thickness down to 0.2 mm have been installed between the collimator chamber and the sample stage. The lenses are able to improve the flux without too excessive an increase in the neutron beam size on the detector. A smaller minimumQ(Qmin) can be obtained by decreasing the beam size without changing the total length of the spectrometer. By testing the central beam profiles under different neutron wavelengths (∼0.56–1 nm) with both traditional pinhole SANS (PSANS) and focusing SANS (FSANS) geometries, the gain factor thanks to the neutron lenses is about one order of magnitude. Given the loss of intensity due to the absorption of neutrons by the lenses, the benefits of the focusing can only be realized if it is possible to increase the aperture size. With an identical source aperture, FSANS can minimize the nominalQminfrom 7.20 × 10−3 nm−1(for PSANS) to 5.55 × 10−3 nm−1at a neutron wavelength of 1 nm. The practical benefit provided by the lenses is verified with a solution of poly(methyl methacrylate) nanospheres, which yields a scattering intensity one order of magnitude higher and a better resolution with the FSANS geometry than with that of PSANS.
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27
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Ryu J, Ko J, Lee H, Shin TG, Sohn D. Structural Response of Imogolite–Poly(acrylic acid) Hydrogel under Deformation. Macromolecules 2016. [DOI: 10.1021/acs.macromol.5b02713] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jungju Ryu
- Department
of Chemistry, Hanyang University, Seoul 133-791, Korea
| | - Jaehyoung Ko
- Department
of Chemistry, Hanyang University, Seoul 133-791, Korea
| | - Hoik Lee
- Department
of Chemistry, Hanyang University, Seoul 133-791, Korea
- Nano
Fusion Technology Research Lab, Division of Frontier Fibers, Institute
for Fiber Engineering (IFES), Interdisciplinary Cluster for Cutting
Edge Research (ICCER), Shinshu University, 3-15-1, Tokida, Ueda, Nagano 386-8567, Japan
| | - Tae-Gyu Shin
- Neutron
Science Division, Korea Atomic Energy Research Institute, Daejeon 305-353, Korea
| | - Daewon Sohn
- Department
of Chemistry, Hanyang University, Seoul 133-791, Korea
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28
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Urosev I, Bakaic E, Alsop RJ, Rheinstädter MC, Hoare T. Tuning the properties of injectable poly(oligoethylene glycol methacrylate) hydrogels by controlling precursor polymer molecular weight. J Mater Chem B 2016; 4:6541-6551. [DOI: 10.1039/c6tb02197b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The properties of POEGMA hydrogels are tuned in a chemistry-independent manner via manipulation of the molecular weight of precursor polymers.
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Affiliation(s)
- Ivan Urosev
- School of Biomedical Engineering
- McMaster University
- Hamilton
- Canada
| | - Emilia Bakaic
- Department of Chemical Engineering
- McMaster University
- Hamilton
- Canada
| | - Richard J. Alsop
- Department of Physics and Astronomy
- McMaster University
- Hamilton
- Canada
| | | | - Todd Hoare
- School of Biomedical Engineering
- McMaster University
- Hamilton
- Canada
- Department of Chemical Engineering
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29
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Araki T, Fukai S. Controlled motion of Janus particles in periodically phase-separating binary fluids. SOFT MATTER 2015; 11:3470-3479. [PMID: 25849337 DOI: 10.1039/c4sm02357a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We numerically investigate the propelled motions of a Janus particle in a periodically phase-separating binary fluid mixture. In this study, the surface of the particle tail prefers one of the binary fluid components and the particle head is neutral in the wettability. During the demixing period, the more wettable phase is selectively adsorbed to the particle tail. Growths of the adsorbed domains induce the hydrodynamic flow in the vicinity of the particle tail, and this asymmetric pumping flow drives the particle toward the particle head. During the mixing period, the particle motion almost ceases because the mixing primarily occurs via diffusion and the resulting hydrodynamic flow is negligibly small. Repeating this cycle unboundedly moves the Janus particle toward the head. The dependencies of the composition and the repeat frequency on the particle motion are discussed.
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Affiliation(s)
- Takeaki Araki
- Department of Physics, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan.
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30
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Magerl D, Philipp M, Qiu XP, Winnik FM, Müller-Buschbaum P. Swelling and Thermoresponsive Behavior of Linear versus Cyclic Poly(N-isopropylacrylamide) Thin Films. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00436] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- David Magerl
- Lehrstuhl
für Funktionelle Materialien, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Martine Philipp
- Lehrstuhl
für Funktionelle Materialien, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Xing-Ping Qiu
- Faculty
of Pharmacy and Department of Chemistry, Université de Montréal, CP 6128 Succursale Centre Ville, Montréal, QC H3C 3J7, Canada
| | - Françoise M. Winnik
- Faculty
of Pharmacy and Department of Chemistry, Université de Montréal, CP 6128 Succursale Centre Ville, Montréal, QC H3C 3J7, Canada
- World Premier
International
(WPI) Research Center Initiative, International Center for Materials
Nanoarchitectonics (MANA), and National Institute for Materials Science
(NIMS), 1-1 Namiki, Tsukuba 305-0044, Japan
| | - Peter Müller-Buschbaum
- Lehrstuhl
für Funktionelle Materialien, Physik-Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
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31
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Bin Imran A, Esaki K, Gotoh H, Seki T, Ito K, Sakai Y, Takeoka Y. Extremely stretchable thermosensitive hydrogels by introducing slide-ring polyrotaxane cross-linkers and ionic groups into the polymer network. Nat Commun 2014; 5:5124. [PMID: 25296246 PMCID: PMC4214411 DOI: 10.1038/ncomms6124] [Citation(s) in RCA: 302] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Accepted: 09/01/2014] [Indexed: 02/04/2023] Open
Abstract
Stimuli-sensitive hydrogels changing their volumes and shapes in response to various stimulations have potential applications in multiple fields. However, these hydrogels have not yet been commercialized due to some problems that need to be overcome. One of the most significant problems is that conventional stimuli-sensitive hydrogels are usually brittle. Here we prepare extremely stretchable thermosensitive hydrogels with good toughness by using polyrotaxane derivatives composed of α-cyclodextrin and polyethylene glycol as cross-linkers and introducing ionic groups into the polymer network. The ionic groups help the polyrotaxane cross-linkers to become well extended in the polymer network. The resulting hydrogels are surprisingly stretchable and tough because the cross-linked α-cyclodextrin molecules can move along the polyethylene glycol chains. In addition, the polyrotaxane cross-linkers can be used with a variety of vinyl monomers; the mechanical properties of the wide variety of polymer gels can be improved by using these cross-linkers.
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Affiliation(s)
- Abu Bin Imran
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Kenta Esaki
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Hiroaki Gotoh
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Takahiro Seki
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Kohzo Ito
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Yasuhiro Sakai
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
| | - Yukikazu Takeoka
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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32
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Smeets NMB, Bakaic E, Yavitt FM, Yang FC, Rheinstädter MC, Hoare T. Probing the Internal Morphology of Injectable Poly(oligoethylene glycol methacrylate) Hydrogels by Light and Small-Angle Neutron Scattering. Macromolecules 2014. [DOI: 10.1021/ma5011827] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Niels M. B. Smeets
- Department of Chemical
Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main
Street West, Hamilton, Ontario, Canada L8S 4L8
| | - Emilia Bakaic
- Department of Chemical
Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main
Street West, Hamilton, Ontario, Canada L8S 4L8
| | - Francis M. Yavitt
- Department of Chemical
Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main
Street West, Hamilton, Ontario, Canada L8S 4L8
| | - Fei-Chi Yang
- Department of Chemical
Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main
Street West, Hamilton, Ontario, Canada L8S 4L8
| | - Maikel C. Rheinstädter
- Department of Chemical
Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main
Street West, Hamilton, Ontario, Canada L8S 4L8
| | - Todd Hoare
- Department of Chemical
Engineering and ‡Department of Physics and Astronomy, McMaster University, 1280 Main
Street West, Hamilton, Ontario, Canada L8S 4L8
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33
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34
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Ebeling B, Eggers S, Hendrich M, Nitschke A, Vana P. Flipping the Pressure- and Temperature-Dependent Cloud-Point Behavior in the Cononsolvency System of Poly(N-isopropylacrylamide) in Water and Ethanol. Macromolecules 2014. [DOI: 10.1021/ma5001139] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bastian Ebeling
- Institut
für Physikalische
Chemie, Georg-August-Universität, Tammannstr. 6, D-37077 Göttingen, Germany
| | - Steffen Eggers
- Institut
für Physikalische
Chemie, Georg-August-Universität, Tammannstr. 6, D-37077 Göttingen, Germany
| | - Michael Hendrich
- Institut
für Physikalische
Chemie, Georg-August-Universität, Tammannstr. 6, D-37077 Göttingen, Germany
| | - Annika Nitschke
- Institut
für Physikalische
Chemie, Georg-August-Universität, Tammannstr. 6, D-37077 Göttingen, Germany
| | - Philipp Vana
- Institut
für Physikalische
Chemie, Georg-August-Universität, Tammannstr. 6, D-37077 Göttingen, Germany
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35
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OSAKA N. Phase Behavior and Physical Properties of Polymers Under Pressure. KOBUNSHI RONBUNSHU 2014. [DOI: 10.1295/koron.71.430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Polotsky AA, Plamper FA, Borisov OV. Collapse-to-Swelling Transitions in pH- and Thermoresponsive Microgels in Aqueous Dispersions: The Thermodynamic Theory. Macromolecules 2013. [DOI: 10.1021/ma401402e] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Alexey A. Polotsky
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 31 Bolshoy pr., 199004 St.-Petersburg, Russia
| | - Felix A. Plamper
- Physikalische
Chemie II, RWTH Aachen University, 52056 Aachen, Germany
| | - Oleg V. Borisov
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 31 Bolshoy pr., 199004 St.-Petersburg, Russia
- St.Petersburg National Research University of Information Technologies, Mechanics and Optics, 197101, Kronverkskiy
pr., 49, St.Petersburg, Russia
- Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux, UMR 5254 CNRS/UPPA, Pau, France
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37
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Reinhardt M, Dzubiella J, Trapp M, Gutfreund P, Kreuzer M, Gröschel AH, Müller AHE, Ballauff M, Steitz R. Fine-Tuning the Structure of Stimuli-Responsive Polymer Films by Hydrostatic Pressure and Temperature. Macromolecules 2013. [DOI: 10.1021/ma400962p] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Matthias Reinhardt
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, Hahn-Meitner Platz 1, 14109
Berlin, Germany
| | - Joachim Dzubiella
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, Hahn-Meitner Platz 1, 14109
Berlin, Germany
- Department
of Physics, Humboldt-University Berlin,
Newtonstrasse 15, 12489
Berlin, Germany
| | - Marcus Trapp
- Angewandte
Physikalische Chemie, Universität Heidelberg, Im Neuenheimer Feld
253, D-69120 Heidelberg, Germany
| | | | - Martin Kreuzer
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, Hahn-Meitner Platz 1, 14109
Berlin, Germany
| | - André H. Gröschel
- Makromolekulare
Chemie II, Universität Bayreuth,
Universitätsstrasse
30, 95440 Bayreuth, Germany
| | - Axel H. E. Müller
- Makromolekulare
Chemie II, Universität Bayreuth,
Universitätsstrasse
30, 95440 Bayreuth, Germany
| | - Matthias Ballauff
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, Hahn-Meitner Platz 1, 14109
Berlin, Germany
- Department
of Physics, Humboldt-University Berlin,
Newtonstrasse 15, 12489
Berlin, Germany
| | - Roland Steitz
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin, Hahn-Meitner Platz 1, 14109
Berlin, Germany
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38
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Asai H, Fujii K, Ueki T, Sawamura S, Nakamura Y, Kitazawa Y, Watanabe M, Han YS, Kim TH, Shibayama M. Structural Study on the UCST-Type Phase Separation of Poly(N-isopropylacrylamide) in Ionic Liquid. Macromolecules 2013. [DOI: 10.1021/ma3020273] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hanako Asai
- Institute for Solid State Physics, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba
277-8581, Japan
| | - Kenta Fujii
- Institute for Solid State Physics, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba
277-8581, Japan
| | - Takeshi Ueki
- Department
of Materials Engineering,
Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Shota Sawamura
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku,
Yokohama 240-8501, Japan
| | - Yutaro Nakamura
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku,
Yokohama 240-8501, Japan
| | - Yuzo Kitazawa
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku,
Yokohama 240-8501, Japan
| | - Masayoshi Watanabe
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku,
Yokohama 240-8501, Japan
| | - Young-Soo Han
- Korea Atomic Energy Research Institute, Daejeon, 1045 Daedeok-daero, Yuseong-gu
305-353, Korea
| | - Tae-Hwan Kim
- Korea Atomic Energy Research Institute, Daejeon, 1045 Daedeok-daero, Yuseong-gu
305-353, Korea
| | - Mitsuhiro Shibayama
- Institute for Solid State Physics, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba
277-8581, Japan
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39
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Macková H, Horák D, Petrovský E, Kovářová J. Magnetic hollow poly(N-isopropylacrylamide-co-N,N′-methylenebisacrylamide-co-glycidyl acrylate) particles prepared by inverse emulsion polymerization. Colloid Polym Sci 2012. [DOI: 10.1007/s00396-012-2609-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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40
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Osaka N, Shibayama M. Pressure Effects on Cononsolvency Behavior of Poly(N-isopropylacrylamide) in Water/DMSO Mixed Solvents. Macromolecules 2012. [DOI: 10.1021/ma2027116] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Noboru Osaka
- Department of Organic and Polymer
Materials Chemistry, Tokyo University of Agriculture and Technology, Koganei-shi, Tokyo 184-8588, Japan
| | - Mitsuhiro Shibayama
- Neutron Science Laboratory,
Institute for Solid State Physics, The University of Tokyo, 106-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
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41
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Seiffert S, Sprakel J. Physical chemistry of supramolecular polymer networks. Chem Soc Rev 2012; 41:909-30. [DOI: 10.1039/c1cs15191f] [Citation(s) in RCA: 401] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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42
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Iwase H, Endo H, Katagiri M, Shibayama M. Modernization of the small-angle neutron scattering spectrometer SANS-U by upgrade to a focusing SANS spectrometer. J Appl Crystallogr 2011. [DOI: 10.1107/s0021889811007527] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The small-angle neutron scattering spectrometer SANS-U at the research reactor (JRR-3) of the Japan Atomic Energy Agency, Tokai, Japan, has been successfully upgraded. This major upgrade was undertaken in order to install a high-resolution position-sensitive detector consisting of a cross-wired position-sensitive photomultiplier tube combined with a ZnS/6LiF scintillator on the SANS-U spectrometer. Without changing the total length of the spectrometer, the aim was to extend the accessible low-Qlimit (Qis the magnitude of the scattering vector) and to shorten the measurement time by employing focusing small-angle neutron scattering (FSANS). By using both spherical MgF2biconcave lenses and the new high-resolution position-sensitive detector, the accessible low-Qlimit was extended from 2.5 × 10−3to 3.8 × 10−4 Å−1. As a result, SANS-U can continuously cover a wideQrange from 3.8 × 10−4to 0.35 Å−1with a wavelength of 7 Å. FSANS can be utilized not only to improve the accessible low-Qlimit but also to increase the intensity of incident neutrons passing through the sample in the conventionalQrange from 2.5 × 10−3to 0.35 Å−1. The use of `high-intensity' FSANS also allowed a reduction of the measuring time by approximately 1/3.16 by increasing the incident neutron intensity.
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43
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Shibayama M. Small-angle neutron scattering on polymer gels: phase behavior, inhomogeneities and deformation mechanisms. Polym J 2010. [DOI: 10.1038/pj.2010.110] [Citation(s) in RCA: 160] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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44
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Suzuki T, Osaka N, Endo H, Shibayama M, Ikeda Y, Asai H, Higashitani N, Kokubo Y, Kohjiya S. Nonuniformity in Cross-Linked Natural Rubber as Revealed by Contrast-Variation Small-Angle Neutron Scattering. Macromolecules 2010. [DOI: 10.1021/ma9019416] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | - Shinzo Kohjiya
- Department of Chemistry, Faculty of Science, Mahidol University, Salaya Campus Phuthamonthon, Nakorn Pathom 73170, Thailand
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45
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Amamoto Y, Kikuchi M, Masunaga H, Sasaki S, Otsuka H, Takahara A. Reorganizable Chemical Polymer Gels Based on Dynamic Covalent Exchange and Controlled Monomer Insertion. Macromolecules 2009. [DOI: 10.1021/ma901746n] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yoshifumi Amamoto
- Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Moriya Kikuchi
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroyasu Masunaga
- Japan Synchrotron Radiation Research Institute, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Sono Sasaki
- Japan Synchrotron Radiation Research Institute, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Hideyuki Otsuka
- Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Atsushi Takahara
- Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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46
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Osaka N, Shibayama M, Kikuchi T, Yamamuro O. Quasi-Elastic Neutron Scattering Study on Water and Polymer Dynamics in Thermo/Pressure Sensitive Polymer Solutions. J Phys Chem B 2009; 113:12870-6. [DOI: 10.1021/jp902960b] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Noboru Osaka
- Neutron Science Laboratory, Institute for Solid State Physics, University of Tokyo, 106-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Mitsuhiro Shibayama
- Neutron Science Laboratory, Institute for Solid State Physics, University of Tokyo, 106-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Tatsuya Kikuchi
- Neutron Science Laboratory, Institute for Solid State Physics, University of Tokyo, 106-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Osamu Yamamuro
- Neutron Science Laboratory, Institute for Solid State Physics, University of Tokyo, 106-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
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47
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Lietor-Santos JJ, Sierra-Martin B, Vavrin R, Hu Z, Gasser U, Fernandez-Nieves A. Deswelling Microgel Particles Using Hydrostatic Pressure. Macromolecules 2009. [DOI: 10.1021/ma9010654] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Ronny Vavrin
- Laboratory for Neutron Scattering, ETH Zurich, and Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
| | - Zhibing Hu
- University of North Texas, Denton, Texas 76203
| | - Urs Gasser
- Laboratory for Neutron Scattering, ETH Zurich, and Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
- Adolphe Merkle Institut, University of Fribourg, P.O. Box 209, 1723 Marly 1, Switzerland
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48
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Ikeda Y, Higashitani N, Hijikata K, Kokubo Y, Morita Y, Shibayama M, Osaka N, Suzuki T, Endo H, Kohjiya S. Vulcanization: New Focus on a Traditional Technology by Small-Angle Neutron Scattering. Macromolecules 2009. [DOI: 10.1021/ma802730z] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Shinzo Kohjiya
- Department of Chemistry, Faculty of Science (SC4-303), Mahidol University, Salaya Campus Phuthamonthon, Nakorn Pathom 73170, Thailand
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49
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Matsunaga T, Sakai T, Akagi Y, Chung UI, Shibayama M. Structure Characterization of Tetra-PEG Gel by Small-Angle Neutron Scattering. Macromolecules 2009. [DOI: 10.1021/ma802280n] [Citation(s) in RCA: 222] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takuro Matsunaga
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan, and Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takamasa Sakai
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan, and Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuki Akagi
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan, and Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Ung-il Chung
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan, and Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Mitsuhiro Shibayama
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan, and Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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50
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Suzuki T, Karino T, Ikkai F, Shibayama M. pH Dependence of Macroscopic Swelling and Microscopic Structures for Thermo/pH-Sensitive Gels with Different Charge Distributions. Macromolecules 2008. [DOI: 10.1021/ma801042q] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takuya Suzuki
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan, and Nihon L’Oreal K.K., KSP R&D-D637, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
| | - Takeshi Karino
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan, and Nihon L’Oreal K.K., KSP R&D-D637, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
| | - Fumiyoshi Ikkai
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan, and Nihon L’Oreal K.K., KSP R&D-D637, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
| | - Mitsuhiro Shibayama
- Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan, and Nihon L’Oreal K.K., KSP R&D-D637, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
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