1
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Wang GK, Yang YM, Jia D. Programming viscoelastic properties in a complexation gel composite by utilizing entropy-driven topologically frustrated dynamical state. Nat Commun 2024; 15:3569. [PMID: 38671020 PMCID: PMC11053056 DOI: 10.1038/s41467-024-47969-z] [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: 01/02/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Hydrogel composites in an aqueous media with viscoelastic properties and elastic modulus that can be precisely tailored are desirable to mimic many biological tissues ranging from mucus, vitreous humor, and nucleus pulposus as well as build up biosensors. Without altering the chemistry, tuning the physical interactions and structures to govern the viscoelastic properties of the hydrogels is indispensable for their applications but quite limited. Here we design a complexation gel composite and utilize the physical principle of topologically frustrated dynamical state to tune the correlated structures between the guest polycation chains and negatively charged host gels. We precisely quantify the mesh size of the host gel and guest chain size. By designing various topologically correlated structures, a viscoelastic moduli map can be built up, ranging from tough to ultrasoft, and from elastic-like with low damping properties to viscous-like with high damping properties. We also tune the swelling ratio by using entropy effect and discover an Entropy-driven Topologically Isovolumetric Point. Our findings provide essential physics to understand the relationship between entropy-driven correlated structures and their viscoelastic properties of the complexation hydrogel composites and will have diverse applications in tissue engineering and soft biomaterials.
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Affiliation(s)
- Gui Kang Wang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yi Ming Yang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Di Jia
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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2
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Norioka C, Kawamura A, Miyata T. Relatively homogeneous network structures of temperature-responsive gels synthesized via atom transfer radical polymerization. SOFT MATTER 2023; 19:2505-2513. [PMID: 36843532 DOI: 10.1039/d3sm00044c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The network structures of poly(N-isopropylacrylamide) (PNIPAAm) gels prepared by atom transfer radical polymerization (ATRP) were compared with those prepared by free radical polymerization (FRP), as a conventional radical polymerization. Temperature-responsive shrinkage was observed in the PNIPAAm gels prepared by ATRP and FRP (ATRP and FRP gels), which depended on the cross-linker content. From the light-scattered intensities, 〈I〉T, measured at the different sample positions, we used the partial heterodyne method to determine the dynamic fluctuation, 〈I〉F, spatial component, 〈I〉C, and correlation length, ξ, of the ATRP and FRP gels, as a function of the cross-linker content and temperature. While there is little difference in 〈I〉F and ξ between the ATRP and FRP gels, 〈I〉C of the ATRP gel was smaller than that of the FRP gel. In addition, we calculated the standard deviation of 〈I〉T for the ATRP and FRP gels, as a function of temperature to quantify the inhomogeneity of the gel networks. The standard deviation revealed that increasing cross-linker content and temperature makes the gel networks more inhomogeneous. The dynamic light scattering (DLS) measurement used to characterize the gel network revealed that ATRP suppresses inhomogeneity more effectively than FRP. The standard deviation of the scattered intensity is used in this study to quantify the inhomogeneity of the network structures. Quantitative evaluations of the inhomogeneity of the network structures by the standard deviation of the scattered intensity are useful in the investigation of the structure-property relationships of gels.
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Affiliation(s)
- Chisa Norioka
- Department of Chemistry and Materials Engineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan.
| | - Akifumi Kawamura
- Department of Chemistry and Materials Engineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan.
- Organization for Research and Development of Innovative Science and Technology, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan
| | - Takashi Miyata
- Department of Chemistry and Materials Engineering, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan.
- Organization for Research and Development of Innovative Science and Technology, Kansai University, 3-3-35, Yamate-cho, Suita, Osaka 564-8680, Japan
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3
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Spatially-Resolved Network Dynamics of Poly(vinyl alcohol) Gels Measured with Dynamic Small Angle Light Scattering. Gels 2022; 8:gels8070394. [PMID: 35877479 PMCID: PMC9316599 DOI: 10.3390/gels8070394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/13/2022] [Accepted: 06/17/2022] [Indexed: 11/16/2022] Open
Abstract
Hydrogels are cross-linked polymer networks swollen in water. The large solvent content enables hydrogels to have unique physical properties and allows them to be used in diverse applications such as tissue engineering, drug delivery, and absorbents. Gel properties are linked to internal dynamics. While bulk gel dynamics have been studied extensively, how gel networks respond locally to deformation has yet to be understood. Here, poly(vinyl alcohol) (PVA) gels have been stretched to study the effects of deformation on gel dynamics parallel and perpendicular to the stretching direction using dynamic small angle light scattering (DSALS). The implementation of DSALS is described and compared to traditional DLS for PVA gels with different crosslink densities, ranging from 0.75–2%. Despite the orders of magnitude difference in the scattering vector, q, range of the techniques, the dynamics match, and the apparent elastic diffusion coefficient, DA increases linearly with the crosslink density for unstretched gels at a constant 2 wt% concentration. We observe that the elastic motion depends on the direction of stretch, decreasing perpendicular to stretching and increasing at parallel direction. Using DSALS can therefore be an effective tool to evaluate local hydrogel response to deformation.
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4
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Koziol MF, Nguyen PL, Gallo S, Olsen BD, Seiffert S. Hierarchy of relaxation times in supramolecular polymer model networks. Phys Chem Chem Phys 2022; 24:4859-4870. [PMID: 35136895 DOI: 10.1039/d1cp04213k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supramolecular polymer gels are an evolving class of soft materials with a vast number of properties that can be tuned to desired applications. Despite continuous advances concerning polymer synthesis, sustainability or adaptability, a consistent understanding of the interplay between structure, dynamics, and diffusion processes within transient networks is lacking. In this study, the hierarchy of several relaxation processes is investigated, starting from a microscopic perspective of a single sticker dissociation event up to the center-of-mass diffusion of a star-shaped polymer building block on different length scales, as well as the resulting macroscopic mechanical response to applied external stress. In addition to that, a second focus is placed on the gel micro-structure that is analyzed by light scattering. Conversion of the dynamic light scattering (DLS) inverse length scale into real space allows for a combination of relaxation times with those obtained by forced Rayleigh scattering (FRS). For these investigations, a model-type metallo-supramolecular network consisting of narrowly dispersed tetra-arm poly(ethylene glycol)-terpyridine macromolecules that are interconnected via complexation with zinc ions is chosen. Assembling the obtained activation energies reveals that all complex dissociation-governed relaxation processes exhibit similar activation energies.
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Affiliation(s)
- Martha Franziska Koziol
- Department of Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Phuong Loan Nguyen
- Department of Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Shannon Gallo
- Department of Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
| | - Bradley D Olsen
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
| | - Sebastian Seiffert
- Department of Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany.
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5
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Mithra K, Jena SS. Surfactant head group and concentration influence on structure and dynamics of gellan gum hydrogels: Crossover from stretched to compressed exponential. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- K Mithra
- Department of Physics and Astronomy National Institute of Technology Rourkela Odisha India
| | - Sidhartha S Jena
- Department of Physics and Astronomy National Institute of Technology Rourkela Odisha India
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6
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A benchmark for gel structures: bond percolation enables the fabrication of extremely homogeneous gels. Polym J 2021. [DOI: 10.1038/s41428-021-00479-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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7
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Theory of Charged Gels: Swelling, Elasticity, and Dynamics. Gels 2021; 7:gels7020049. [PMID: 33919122 PMCID: PMC8167639 DOI: 10.3390/gels7020049] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 03/29/2021] [Accepted: 04/14/2021] [Indexed: 11/17/2022] Open
Abstract
The fundamental attributes of charged hydrogels containing predominantly water and controllable amounts of low molar mass electrolytes are of tremendous significance in biological context and applications in healthcare. However, a rigorous theoretical formulation of gel behavior continues to be a challenge due to the presence of multiple length and time scales in the system which operate simultaneously. Furthermore, chain connectivity, the electrostatic interaction, and the hydrodynamic interaction all lead to long-range interactions. In spite of these complications, considerable progress has been achieved over the past several decades in generating theories of variable complexity. The present review presents an analytically tractable theory by accounting for correlations emerging from topological, electrostatic, and hydrodynamic interactions. Closed-form formulas are derived for charged hydrogels to describe their swelling equilibrium, elastic moduli, and the relationship between microscopic properties such as gel diffusion and macroscopic properties such as elasticity. In addition, electrostatic coupling between charged moieties and their ion clouds, which significantly modifies the elastic diffusion coefficient of gels, and various scaling laws are presented. The theoretical formulas summarized here are useful to adequately capture the essentials of the physics of charged gels and to design new hydrogels with specified elastic and dynamical properties.
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8
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Jia D, Muthukumar M. Interplay between Microscopic and Macroscopic Properties of Charged Hydrogels. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01824] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Di Jia
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Amherst, Massachusetts 01003, United States
| | - Murugappan Muthukumar
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Amherst, Massachusetts 01003, United States
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9
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Kureha T, Minato H, Suzuki D, Urayama K, Shibayama M. Concentration dependence of the dynamics of microgel suspensions investigated by dynamic light scattering. SOFT MATTER 2019; 15:5390-5399. [PMID: 31204747 DOI: 10.1039/c9sm01030k] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The dynamics of colloidal gel particle suspensions, i.e., microgel suspensions, has been investigated by dynamic light scattering (DLS) over a wide concentration range from the (I) dilute (φ < φcp) to the (II) intermediate (φ ≈ φcp) and (III) high concentration regions (φ ≫ φcp), where φ and φcp are the volume fraction of the gel particles in the suspension and the random close packing fraction, φcp ≈ 0.64, respectively. The time-intensity correlation function exhibited a distinct change with increasing φ, i.e., from ergodic behaviour (region I and II) to nonergodic behaviour (region III). A mode transition from translational (region I) to cooperative diffusion (the so-called gel mode) (region II) was also observed due to the soft and deformable nature of the microgels. Different from the dynamics of hard colloidal glass suspensions, the gel mode remained even at φ ≫ φcp. By using the ensemble-averaged time-correlation function, IE, we quantify the relationship between φ and their dynamics, and show that the soft microgels are deswollen in the densely packed state.
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Affiliation(s)
- Takuma Kureha
- Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan.
| | - Haruka Minato
- Graduate School of Textile Science & Technology, Shinshu University, Ueda 386-8567, Japan
| | - Daisuke Suzuki
- Graduate School of Textile Science & Technology, Shinshu University, Ueda 386-8567, Japan and Division of Smart Textile, Institute for Fiber Engineering, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Ueda 386-8567, Japan
| | - Kenji Urayama
- Department of Macromolecular Science and Engineering, Kyoto Institute of Technology, Sakyo-ku, Kyoto 606-8585, Japan
| | - Mitsuhiro Shibayama
- Institute for Solid State Physics, The University of Tokyo, Kashiwa 277-8581, Japan.
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10
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Kureha T, Hayashi K, Ohira M, Li X, Shibayama M. Dynamic Fluctuations of Thermoresponsive Poly(oligo-ethylene glycol methyl ether methacrylate)-Based Hydrogels Investigated by Dynamic Light Scattering. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b02035] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Takuma Kureha
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - Kyohei Hayashi
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - Masashi Ohira
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
| | - Xiang Li
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Japan
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11
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Dynamics of thermoresponsive conetwork gels composed of poly(ethylene glycol) and poly(ethyl glycidyl ether-co-methyl glycidyl ether). POLYMER 2018. [DOI: 10.1016/j.polymer.2018.09.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Topologically frustrated dynamics of crowded charged macromolecules in charged hydrogels. Nat Commun 2018; 9:2248. [PMID: 29884894 PMCID: PMC5993817 DOI: 10.1038/s41467-018-04661-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Accepted: 05/10/2018] [Indexed: 11/23/2022] Open
Abstract
Movement of charged macromolecules in crowded aqueous environments is a ubiquitous phenomenon vital to the various living processes and formulations of materials for health care. While study of diffusion of tracer amounts of probe macromolecules trapped inside concentrated solutions, gels, or random media has led to an enhanced understanding of this complex process, the collective dynamics of charged macromolecules embedded inside congested charge-bearing matrices still remains to be fully explored. Here we report a frustrated dynamics of DNA and synthetic polyelectrolytes inside a charged host hydrogel where the guest molecules do not diffuse. Instead, they exhibit a family of relaxation processes arising from a combination of conformational entropy and local chain dynamics, which are frustrated by the confinement from the gel. We also have developed a model explaining this new universality class of non-diffusive topologically frustrated dynamics of charged macromolecules. Diffusion of molecules in crowded environment is important for various living systems, but the dynamics of charged molecules in charged matrices remains still unexplored. Here the authors report a dynamics of DNA and polyelectrolytes in a charged hydrogel where the guest molecules do not diffuse but experience topologically frustrated dynamics.
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13
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Zhang E, Zhao Y, Yang W, Chen H, Liu W, Dai X, Qiu X, Ji X. Viscoelastic behaviour and relaxation modes of one polyamic acid organogel studied by rheometers and dynamic light scattering. SOFT MATTER 2017; 14:73-82. [PMID: 29231227 DOI: 10.1039/c7sm02185b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A novel polyamic acid (PAA from BAPMPO-BPDA) organogel was synthesized and characterized via dynamic light scattering (DLS), a classical rheometer, and diffusion wave spectroscopy (DWS). In situ monitoring was performed using a classical rheometer to observe the formation of the PAA organogel. The rheological curves confirm the formation of the PAA gel network and the origin of hydrogen bonding from the -NH- group (donor) and P[double bond, length as m-dash]O group (acceptor). The autocorrelation functions of PAA under different conditions (pure gel, gel with NaNO3, gel with formamide) are measured via DLS, and different characteristic times are obtained via the CONTIN method. Three different relaxation modes of the PAA gel, i.e., fast, intermediate and slow modes, are observed. The fast and intermediate modes show a diffusive behaviour (τ ∼ q-2), whereas the slow mode did not. When enough formamide is added into the PAA gel, the fast mode disappears; addition of enough salt (NaNO3) leads to disappearance of the slow mode. The relationship between characteristic time and diffusion vector demonstrates that the different decorrelation modes consisted of two homodyne and two heterodyne components. Two single-exponential functions and two stretched exponential functions were used, and the different decorrelation modes of the PAA gel are expressed with a non-linear function, which fits the autocorrelation function very well. And the different decorrelation modes are also discussed. DWS results in the high-frequency region not only demonstrate the formation of a PAA gel network but also indicate that the semiflexible chains of PAA are due to electrostatic interaction. The DWS results at different time scales are analyzed by applying the de Gennes' reptation model.
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Affiliation(s)
- Ensong Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China.
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14
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Affiliation(s)
- Anand Rahalkar
- Material
Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
- Chemical
and Biomolecular Engineering, Rice University, 6100 Main MS-362, Houston, Texas 77005, United States
| | - Murugappan Muthukumar
- Polymer
Science and Engineering, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
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15
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Morozova S, Muthukumar M. Elasticity at Swelling Equilibrium of Ultrasoft Polyelectrolyte Gels: Comparisons of Theory and Experiments. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02656] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Svetlana Morozova
- Polymer Science and Engineering
Department, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Murugappan Muthukumar
- Polymer Science and Engineering
Department, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
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16
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17
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NORISUYE T, SUGITA K, NGUYEN TT, NAKANISHI H, TRAN-CONG-MIYATA Q. A Novel Structural Analysis Technique for Particle Suspensions with the Size Ranging from Nanometers to Micrometers by Ultrasound Scattering. KOBUNSHI RONBUNSHU 2017. [DOI: 10.1295/koron.2017-0017] [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]
Affiliation(s)
- Tomohisa NORISUYE
- Department of Macromolecular Science and Engineering, Graduate School of Science and Technology
| | - Kazuki SUGITA
- Department of Macromolecular Science and Engineering, Graduate School of Science and Technology
| | - Tran Thao NGUYEN
- Department of Macromolecular Science and Engineering, Graduate School of Science and Technology
| | - Hideyuki NAKANISHI
- Department of Macromolecular Science and Engineering, Graduate School of Science and Technology
| | - Qui TRAN-CONG-MIYATA
- Department of Macromolecular Science and Engineering, Graduate School of Science and Technology
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18
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Morozova S, Hamilton P, Ravi N, Muthukumar M. Development of a Vitreous Substitute: Incorporating Charges and Fibrous Structures in Synthetic Hydrogel Materials. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00885] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Svetlana Morozova
- Polymer
Science and Engineering, UMass Amherst, Amherst, Massachusetts 01003
| | - Paul Hamilton
- Ophthalmology & Visual Sciences, Washington University School of Medicine, St. Louis, Missouri
| | - Nathan Ravi
- Ophthalmology & Visual Sciences, Washington University School of Medicine, St. Louis, Missouri
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19
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Norisuye T. Structures and dynamics of microparticles in suspension studied using ultrasound scattering techniques. POLYM INT 2016. [DOI: 10.1002/pi.5100] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Tomohisa Norisuye
- Department of Macromolecular Science and Engineering, Graduate School of Science and Technology; Kyoto Institute of Technology Matsugasaki; Sakyo-ku, Kyoto 606-8585 Japan
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20
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Abstract
Many polymer gels display network defects and crosslinking inhomogeneity. This review reflects and interrelates investigations on the characterization of such polymer-network heterogeneity and on its impact on the swelling, elasticity, and permeability of polymer gels.
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Affiliation(s)
- F. Di Lorenzo
- Helmholtz-Zentrum Berlin
- Soft Matter and Functional Materials
- D-14109 Berlin
- Germany
- Helmholtz Virtual Institute “Multifunctional Biomaterials for Medicine”
| | - S. Seiffert
- Helmholtz-Zentrum Berlin
- Soft Matter and Functional Materials
- D-14109 Berlin
- Germany
- Helmholtz Virtual Institute “Multifunctional Biomaterials for Medicine”
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21
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Grube S, Oppermann W. Inhomogeneity in Hydrogels Synthesized by Thiol–Ene Polymerization. Macromolecules 2013. [DOI: 10.1021/ma302520p] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Svenja Grube
- Institute of Physical Chemistry, Clausthal University of Technology, Arnold-Sommerfeld-Straße
4, D-38678 Clausthal-Zellerfeld, Germany
| | - Wilhelm Oppermann
- Institute of Physical Chemistry, Clausthal University of Technology, Arnold-Sommerfeld-Straße
4, D-38678 Clausthal-Zellerfeld, Germany
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22
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Fan C, Liao L, Zhang C, Liu L. A tough double network hydrogel for cartilage tissue engineering. J Mater Chem B 2013; 1:4251-4258. [DOI: 10.1039/c3tb20600a] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Vyshivannaya OV, Laptinskaya TV, Makhaeva EE, Khokhlov AR. Dynamic light scattering in semi-interpenetrating polymer networks based on polyacrylamide and poly(N-vinylcaprolactam). POLYMER SCIENCE SERIES A 2012. [DOI: 10.1134/s0965545x12080135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Lavine BK, Oxenford L, Kim M, Kaval N, Benjamin M, Seitz W. Novel turbidimetric method to study polymer swelling. Microchem J 2012. [DOI: 10.1016/j.microc.2012.01.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Stathopoulos AT, Kyritsis A, Ferrer GG, Gómez Ribelles JL, Christodoulides C, Pissis P. Cooperative Segmental Motions in Ethyl Acrylate/Triethylene Glycol Dimethacrylate Copolymer Networks Studied by Dielectric Techniques. Macromolecules 2011. [DOI: 10.1021/ma201755y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andreas T. Stathopoulos
- Department of Physics, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece
| | - Apostolos Kyritsis
- Department of Physics, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece
| | - Gloria Gallego Ferrer
- Centro de Biomateriales e Ingeniería Tisular, Universidad Politecnica de Valencia, P.O. Box 22012, E-46071 Valencia, Spain
- Regenerative Medicine Unit, Centro de Investigación Príncipe Felipe, Autopista del Saler 16, 46013 Valencia, Spain
- CIBER en Bioingeniería, Biomateriales y Nanomedicina, Valencia, Spain
| | - José Luis Gómez Ribelles
- Centro de Biomateriales e Ingeniería Tisular, Universidad Politecnica de Valencia, P.O. Box 22012, E-46071 Valencia, Spain
- Regenerative Medicine Unit, Centro de Investigación Príncipe Felipe, Autopista del Saler 16, 46013 Valencia, Spain
- CIBER en Bioingeniería, Biomateriales y Nanomedicina, Valencia, Spain
| | - Costas Christodoulides
- Department of Physics, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece
| | - Polycarpos Pissis
- Department of Physics, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece
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26
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Yoon JA, Bencherif SA, Aksak B, Kim EK, Kowalewski T, Oh JK, Matyjaszewski K. Thermoresponsive hydrogel scaffolds with tailored hydrophilic pores. Chem Asian J 2011; 6:128-36. [PMID: 21162088 DOI: 10.1002/asia.201000514] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Thermoresponsive hydrogels with efficient water-release channels were prepared by incorporating star-shaped macromolecular pore precursors, with degradable disulfide crosslinked cores and hydrophilic poly(ethylene oxide) (PEO) arms, into the gel network. The gel framework exhibiting lower critical solution temperature (LCST) behavior was synthesized by atom transfer radical polymerization (ATRP) of 2-(2-methoxyethoxy)ethyl methacrylate and ethylene glycol dimethacrylate. The incorporation of degradable star macromolecules (dSM) was facilitated by growing the gel from ATRP initiator sites contained within their cores. Following the formation of the gel, the dSM cores were degraded, yielding uniform pores lined with hydrophilic PEO chains. The effect of hydrophilic pores on thermoresponsive hydrogel performances was studied by comparing hydrogels containing hydrophilic pores with analogous hydrogels with neutral pores or with pore-free controls. Dye absorption/release experiments pointed to the suitability of newly synthesized hydrogels as controlled-release media, for example, for drug delivery. Cell culture experiments confirmed their nontoxicity and biocompatibility (cell viability >98%).
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Affiliation(s)
- Jeong Ae Yoon
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
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Yoon JA, Kowalewski T, Matyjaszewski K. Comparison of Thermoresponsive Deswelling Kinetics of Poly(oligo(ethylene oxide) methacrylate)-Based Thermoresponsive Hydrogels Prepared by “Graft-from” ATRP. Macromolecules 2011. [DOI: 10.1021/ma1029696] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jeong Ae Yoon
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Tomasz Kowalewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Krzysztof Matyjaszewski
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
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Mccoy JL, Muthukumar M. Dynamic light scattering studies of ionic and nonionic polymer gels with continuous and discontinuous volume transitions. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/polb.22101] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Characterization of spatial inhomogeneities and dynamic properties of random cross-linked polystyrene networks by dynamic light scattering. POLYMER 2010. [DOI: 10.1016/j.polymer.2010.04.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Takeshita H, Sano M, Wada K, Tamura K, Miya M, Takenaka K, Shiomi T. Fast shrinking kinetics of poly(N-isopropylacrylamide) hydrogels containing a nonionic surfactant. Colloid Polym Sci 2009. [DOI: 10.1007/s00396-009-2069-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Shibayama M. Universality and Specificity of Polymer Gels Viewed by Scattering Methods. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2006. [DOI: 10.1246/bcsj.79.1799] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Taguchi K, Toda A, Miyamoto Y. Dynamic Light Scattering Studies on Crystallization of Isotactic Polystyrene from Dilute Solutions at High Supercoolings. J MACROMOL SCI B 2006. [DOI: 10.1080/00222340600974135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Ken Taguchi
- a Graduate School of Human and Environmental Studies , Kyoto University , Kyoto, Japan
| | - Akihiko Toda
- b Graduate School of Integrated Arts and Sciences , Hiroshima University , Higashi‐Hiroshima, Japan
| | - Yoshihisa Miyamoto
- a Graduate School of Human and Environmental Studies , Kyoto University , Kyoto, Japan
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Koizumi H, Shiraishi Y, Tojo S, Fujitsuka M, Majima T, Hirai T. Temperature-Driven Oxygenation Rate Control by Polymeric Photosensitizer. J Am Chem Soc 2006; 128:8751-3. [PMID: 16819867 DOI: 10.1021/ja062949c] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A polymeric photosensitizer, poly(NIPAM-co-BP), consisting of N-isopropylacrylamide (NIPAM) and benzophenone (BP) units, demonstrates a temperature-controlled oxygenation activity in water. The system promotes a heat-induced oxygenation enhancement at <17 degrees C and suppression at >22 degrees C. This unprecedented photo-oxygenation activity is triggered by a heat-induced phase transition of the polymer from coil to micelle, and then to globule state, cleverly controlling the stability and diffusion of singlet oxygen and the location of substrate.
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Affiliation(s)
- Hisao Koizumi
- Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Norisuye T, Morinaga T, Tran-Cong-Miyata Q, Goto A, Fukuda T, Shibayama M. Comparison of the gelation dynamics for polystyrenes prepared by conventional and living radical polymerizations: a time-resolved dynamic light scattering study. POLYMER 2005. [DOI: 10.1016/j.polymer.2004.12.043] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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