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Malektaj H, Drozdov AD, deClaville Christiansen J. Swelling of Homogeneous Alginate Gels with Multi-Stimuli Sensitivity. Int J Mol Sci 2023; 24:ijms24065064. [PMID: 36982139 PMCID: PMC10049665 DOI: 10.3390/ijms24065064] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 02/27/2023] [Accepted: 03/01/2023] [Indexed: 03/09/2023] Open
Abstract
A new two-step method is suggested for the preparation of homogeneous alginate gels. In the first step, alginate chains are weakly bonded by Ca2+ ions in an aqueous solution with a low pH. In the next step, the gel is immersed into a strong solution of CaCl2 to finalize the cross-linking process. Homogeneous alginate gels preserve their integrity in aqueous solutions with a pH ranging from 2 to 7 and ionic strength in the interval from 0 to 0.2 M, at temperatures ranging from room temperature up to 50 °C, and can be used in biomedical applications. The immersion of these gels into aqueous solutions with low pH induces the partial breakage of ionic bonds between chains (treated as gel degradation). This degradation affects the equilibrium and transient swelling of homogeneous alginate gels and makes them sensitive to the history of loading and environmental conditions (pH, ionic strength and temperature of aqueous solutions). As sensitivity to the environmental stimuli is a characteristic feature of polymer networks connected by catch bonds, homogeneous alginate gels may serve as a simple model, mimicking the behavior of more sophisticated structures in living matter.
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2
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Li W, Guan Q, Li M, Saiz E, Hou X. Nature's strategy to construct tough responsive hydrogel actuators and their applications. Prog Polym Sci 2023. [DOI: 10.1016/j.progpolymsci.2023.101665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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3
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Malekmohammadi S, Sedghi Aminabad N, Sabzi A, Zarebkohan A, Razavi M, Vosough M, Bodaghi M, Maleki H. Smart and Biomimetic 3D and 4D Printed Composite Hydrogels: Opportunities for Different Biomedical Applications. Biomedicines 2021; 9:1537. [PMID: 34829766 PMCID: PMC8615087 DOI: 10.3390/biomedicines9111537] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/10/2021] [Accepted: 10/16/2021] [Indexed: 12/17/2022] Open
Abstract
In recent years, smart/stimuli-responsive hydrogels have drawn tremendous attention for their varied applications, mainly in the biomedical field. These hydrogels are derived from different natural and synthetic polymers but are also composite with various organic and nano-organic fillers. The basic functions of smart hydrogels rely on their ability to change behavior; functions include mechanical, swelling, shaping, hydrophilicity, and bioactivity in response to external stimuli such as temperature, pH, magnetic field, electromagnetic radiation, and biological molecules. Depending on the final applications, smart hydrogels can be processed in different geometries and modalities to meet the complicated situations in biological media, namely, injectable hydrogels (following the sol-gel transition), colloidal nano and microgels, and three dimensional (3D) printed gel constructs. In recent decades smart hydrogels have opened a new horizon for scientists to fabricate biomimetic customized biomaterials for tissue engineering, cancer therapy, wound dressing, soft robotic actuators, and controlled release of bioactive substances/drugs. Remarkably, 4D bioprinting, a newly emerged technology/concept, aims to rationally design 3D patterned biological matrices from synthesized hydrogel-based inks with the ability to change structure under stimuli. This technology has enlarged the applicability of engineered smart hydrogels and hydrogel composites in biomedical fields. This paper aims to review stimuli-responsive hydrogels according to the kinds of external changes and t recent applications in biomedical and 4D bioprinting.
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Affiliation(s)
- Samira Malekmohammadi
- Department of Engineering, School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK;
- Department of Regenerative Medicine, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 1665659911, Iran;
- Nanomedicine Research Association (NRA), Universal Scientific Education and Research Network (USERN), Tehran 1419733151, Iran;
| | - Negar Sedghi Aminabad
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 5166653431, Iran; (N.S.A.); (A.S.)
| | - Amin Sabzi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 5166653431, Iran; (N.S.A.); (A.S.)
| | - Amir Zarebkohan
- Nanomedicine Research Association (NRA), Universal Scientific Education and Research Network (USERN), Tehran 1419733151, Iran;
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 5166653431, Iran; (N.S.A.); (A.S.)
| | - Mehdi Razavi
- Biionix Cluster, Department of Internal Medicine, College of Medicine, University of Central Florida, Orlando, FL 32827, USA;
| | - Massoud Vosough
- Department of Regenerative Medicine, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran 1665659911, Iran;
| | - Mahdi Bodaghi
- Department of Engineering, School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK;
| | - Hajar Maleki
- Department of Chemistry, Institute of Inorganic Chemistry, University of Cologne, 50939 Cologne, Germany
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Lucht N, Hinrichs S, Großmann L, Pelz C, Felgenhauer E, Clasen E, Schwenk M, Hankiewicz B. Synthesis of magnetic ferrogels: a tool-box approach for finely tuned magnetic- and temperature-dependent properties. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2019-0120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Abstract
Multi responsive hydrogels have many potential applications in the field of medicine as well as technical fields and are of great interest in fundamental research. Here we present the synthesis and characterization of tailored magnetic hydrogels – micro- as well as macrogels – which consist of iron oxide and cobalt ferrite, varying in phase and morphology, embedded in a thermoresponsive polymer. We introduce new ways to synthesize magnetic particles and revisit some common strategies when dealing with particle synthesis. Subsequently we discuss the details of the thermoresponsive matrix and how we can influence and manipulate the thermoresponsive properties, i.e. the lower critical solution temperature. Ultimately, we present the particle-hydrogel composite and show two exemplary applications for particle matrix interactions, i.e. heat transfer and reorientation of the particles in a magnetic field.
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Affiliation(s)
- Niklas Lucht
- Institute of Physical Chemistry, Hamburg University , Grindelallee 117, 20146 Hamburg , Germany
| | - Stephan Hinrichs
- Institute of Physical Chemistry, Hamburg University , Grindelallee 117, 20146 Hamburg , Germany
| | - Larissa Großmann
- Institute of Physical Chemistry, Hamburg University , Grindelallee 117, 20146 Hamburg , Germany
| | - Catharina Pelz
- Institute of Physical Chemistry, Hamburg University , Grindelallee 117, 20146 Hamburg , Germany
| | - Elena Felgenhauer
- Institute of Physical Chemistry, Hamburg University , Grindelallee 117, 20146 Hamburg , Germany
| | - Eike Clasen
- Institute of Physical Chemistry, Hamburg University , Grindelallee 117, 20146 Hamburg , Germany
| | - Max Schwenk
- Institute of Physical Chemistry, Hamburg University , Grindelallee 117, 20146 Hamburg , Germany
| | - Birgit Hankiewicz
- Institute of Physical Chemistry, Hamburg University , Grindelallee 117, 20146 Hamburg , Germany
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5
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Zákutná D, Graef K, Dresen D, Porcar L, Honecker D, Disch S. In situ magnetorheological SANS setup at Institut Laue-Langevin. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04713-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
AbstractA magnetorheological sample environment is presented that allows for in situ magnetic field and shear flow during small-angle neutron scattering (SANS) measurements and is now available at the Institut Laue-Langevin (ILL). The setup allows performing simultaneous magnetorheological measurements together with the investigation of structural and magnetic changes on the nanometer length scale underlying the rheological response of ferrofluids. We describe the setup consisting of a commercial rheometer and a custom-made set of Helmholtz coils and show exemplarily data on the field and shear flow alignment of a dispersion of hematite nanospindles in water.
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6
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Hess M, Gratz M, Remmer H, Webers S, Landers J, Borin D, Ludwig F, Wende H, Odenbach S, Tschöpe A, Schmidt AM. Scale-dependent particle diffusivity and apparent viscosity in polymer solutions as probed by dynamic magnetic nanorheology. SOFT MATTER 2020; 16:7562-7575. [PMID: 32716420 DOI: 10.1039/c9sm00747d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In several upcoming rheological approaches, including methods of micro- and nanorheology, the measurement geometry is of critical impact on the interpretation of the results. The relative size of the probe objects employed (as compared to the intrinsic length scales of the sample to be investigated) becomes of crucial importance, and there is increasing interest to investigate the dynamic processes and mobility in nanostructured materials. A combination of different rheological approaches based on the rotation of magnetically blocked nanoprobes is used to systematically investigate the size-dependent diffusion behavior in aqueous poly(ethylene glycol) (PEG) solutions with special attention paid to the relation of probe size to characteristic length scales within the polymer solutions. We employ two types of probe particles: nickel rods of hydrodynamic length Lh between 200 nm and 650 nm, and cobalt ferrite spheres with diameter dh between 13 nm and 23 nm, and examine the influence of particle size and shape on the nanorheological information obtained in model polymer solutions based on two related, dynamic-magnetic approaches. The results confirm that as long as the investigated solutions are not entangled, and the particles are much larger than the macromolecular correlation length, a good accordance between macroscopic and nanoscopic results, whereas a strong size-dependent response is observed in cases where the particles are of similar size or smaller than the radius of gyration Rg or the correlation length ξ of the polymer solution.
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Affiliation(s)
- Melissa Hess
- Institute of Physical Chemistry, Chemistry Department, Faculty of Mathematics and Natural Sciences, University of Cologne, Luxemburger Str. 116, D-50939 Köln, Germany.
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7
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Shell-Forming Stimulus-Active Hydrogel Composite Membranes: Concept and Modeling. MICROMACHINES 2020; 11:mi11060541. [PMID: 32466594 PMCID: PMC7345794 DOI: 10.3390/mi11060541] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 11/25/2022]
Abstract
The swelling of active hydrogels combined with passive layers allows the design of shell-forming structures. A shell-like structure offers different properties than a flat structure, e.g., variations in bending stiffness across different directions. A drastic increase of the bending stiffness is favorable e.g., in rollable/flexible displays: in their unrolled form, they have to be stiff enough to resist bending due to dead weight. At the same time, they have to be flexible enough to be rolled-up. This can be achieved by shell-forming. In the current modeling and simulation work, we present a basic concept of combined active–passive composites and demonstrate how they form shells. As the example material class, we use hydrogels with isotropic swelling capabilities. We demonstrate how to model the combined mechanical behavior with the Temperature-Expansion-Model. Afterwards, we show numerical results obtained by Finite Element simulations. We conclude that the envisioned structure has a great potential for obtaining soft rollable sheets that can be stiffened by intrinsic activation.
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8
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Nádasi H, Corradi Á, Stannarius R, Koch K, Schmidt AM, Aya S, Araoka F, Eremin A. The role of structural anisotropy in the magnetooptical response of an organoferrogel with mobile magnetic nanoparticles. SOFT MATTER 2019; 15:3788-3795. [PMID: 30990220 DOI: 10.1039/c9sm00219g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We investigate the structure and the magnetooptical response of isotropic and anisotropic fibrillous organoferrogels with mobile magnetic nanoparticles (MNPs). We demonstrate that the presence of the gel network restricts the magnetooptical response of the ferrogel. Even though the ferrogel exhibits no magnetic hysteresis, an optical hysteresis has been found. This suggests that the magnetooptical response is primarily determined by the dynamics of self-assembly of the MNPs into shape-anisotropic agglomerates. Furthermore, we show that the optical anisotropy of the system can be fine-tuned by varying the concentration of the gelator and the MNPs, respectively. The optical response in structurally anisotropic gels becomes orientation-dependent, revealing an intricate interplay between the gel mesh and the MNPs.
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Affiliation(s)
- Hajnalka Nádasi
- Otto von Guericke University, Inst. of Physics, Dept. Nonlinear Phenomena, Universitaetsplatz 2, 39106 Magdeburg, Germany.
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9
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Weeber R, Hermes M, Schmidt AM, Holm C. Polymer architecture of magnetic gels: a review. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:063002. [PMID: 29261097 DOI: 10.1088/1361-648x/aaa344] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this review article, we provide an introduction to ferrogels, i.e. polymeric gels with embedded magnetic particles. Due to the interplay between magnetic and elastic properties of these materials, they are promising candidates for engineering and biomedical applications such as actuation and controlled drug release. Particular emphasis will be put on the polymer architecture of magnetic gels since it controls the degrees of freedom of the magnetic particles in the gel, and it is important for the particle-polymer coupling determining the mechanisms available for the gel deformation in magnetic fields. We report on the different polymer architectures that have been realized so far, and provide an overview of synthesis strategies and experimental techniques for the characterization of these materials. We further focus on theoretical and simulational studies carried out on magnetic gels, and highlight their contributions towards understanding the influence of the gels' polymer architecture.
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Affiliation(s)
- Rudolf Weeber
- Institut für Computerphysik, Universität Stuttgart, Allmandring 3, 70569 Stuttgart, Germany
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10
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Blin T, Niederberger A, Benyahia L, Fresnais J, Montembault V, Fontaine L. Thermoresponsive hybrid double-crosslinked networks using magnetic iron oxide nanoparticles as crossing points. Polym Chem 2018. [DOI: 10.1039/c8py01006d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Preparation and characterization of stimuli-sensitive hybrid double-crosslinked hydrogels based on iron oxide nanoparticles as the nano-crosslinkers and a difuran-functionalized PEO as the diene partner for the thermoreversible Diels–Alder reaction.
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Affiliation(s)
- Thomas Blin
- Institut des Molécules et Matériaux du Mans (IMMM)
- UMR 6283 CNRS – Le Mans Université
- 72085 Le Mans Cedex 9
- France
| | - Antoine Niederberger
- Institut des Molécules et Matériaux du Mans (IMMM)
- UMR 6283 CNRS – Le Mans Université
- 72085 Le Mans Cedex 9
- France
| | - Lazhar Benyahia
- Institut des Molécules et Matériaux du Mans (IMMM)
- UMR 6283 CNRS – Le Mans Université
- 72085 Le Mans Cedex 9
- France
| | - Jérôme Fresnais
- Laboratoire de Physico-chimie des Electrolytes et Nanosystèmes Interfaciaux (PHENIX)
- UMR 8234 CNRS
- Sorbonne Université
- 75252 Paris Cedex 05
- France
| | - Véronique Montembault
- Institut des Molécules et Matériaux du Mans (IMMM)
- UMR 6283 CNRS – Le Mans Université
- 72085 Le Mans Cedex 9
- France
| | - Laurent Fontaine
- Institut des Molécules et Matériaux du Mans (IMMM)
- UMR 6283 CNRS – Le Mans Université
- 72085 Le Mans Cedex 9
- France
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11
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Nun N, Hinrichs S, Schroer MA, Sheyfer D, Grübel G, Fischer B. Tuning the Size of Thermoresponsive Poly(N-Isopropyl Acrylamide) Grafted Silica Microgels. Gels 2017; 3:E34. [PMID: 30920530 PMCID: PMC6318582 DOI: 10.3390/gels3030034] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 09/04/2017] [Accepted: 09/13/2017] [Indexed: 11/16/2022] Open
Abstract
Core-shell microgels were synthesized via a free radical emulsion polymerization of thermoresponsive poly-(N-isopropyl acrylamide), pNipam, on the surface of silica nanoparticles. Pure pNipam microgels have a lower critical solution temperature (LCST) of about 32 °C. The LCST varies slightly with the crosslinker density used to stabilize the gel network. Including a silica core enhances the mechanical robustness. Here we show that by varying the concentration gradient of the crosslinker, the thermoresponsive behaviour of the core-shell microgels can be tuned. Three different temperature scenarios have been detected. First, the usual behaviour with a decrease in microgel size with increasing temperature exhibiting an LCST; second, an increase in microgel size with increasing temperature that resembles an upper critical solution temperature (UCST), and; third, a decrease with a subsequent increase of size reminiscent of the presence of both an LCST, and a UCST. However, since the chemical structure has not been changed, the LCST should only change slightly. Therefore we demonstrate how to tune the particle size independently of the LCST.
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Affiliation(s)
- Nils Nun
- Institute of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany.
| | - Stephan Hinrichs
- Institute of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany.
| | - Martin A Schroer
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany.
- The Hamburg Centre for Ultrafast Imaging (CUI), Luruper Chaussee 149, 22761 Hamburg, Germany.
| | - Dina Sheyfer
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany.
- The Hamburg Centre for Ultrafast Imaging (CUI), Luruper Chaussee 149, 22761 Hamburg, Germany.
| | - Gerhard Grübel
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany.
- The Hamburg Centre for Ultrafast Imaging (CUI), Luruper Chaussee 149, 22761 Hamburg, Germany.
| | - Birgit Fischer
- Institute of Physical Chemistry, University of Hamburg, 20146 Hamburg, Germany.
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12
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WANG F, WANG W, ZHU Y, WANG A. Evaluation of Ce(III) and Gd(III) adsorption from aqueous solution using CTS- g -(AA- co -SS)/ISC hybrid hydrogel adsorbent. J RARE EARTH 2017. [DOI: 10.1016/s1002-0721(17)60966-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Jiang L, Chai F, Chen Q. Soft magnetic nanocomposite microgels by in-situ crosslinking of poly acrylic acid onto superparamagnetic magnetite nanoparticles and their applications for the removal of Pb(II) ion. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.02.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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15
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Motealleh A, Kehr NS. Nanocomposite Hydrogels and Their Applications in Tissue Engineering. Adv Healthc Mater 2017; 6. [PMID: 27900856 DOI: 10.1002/adhm.201600938] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 10/18/2016] [Indexed: 01/21/2023]
Abstract
Nanocomposite (NC) hydrogels, organic-inorganic hybrid materials, are of great interest as artificial three-dimensional (3D) biomaterials for biomedical applications. NC hydrogels are prepared in water by chemically or physically cross-linking organic polymers with nanomaterials (NMs). The incorporation of hard inorganic NMs into the soft organic polymer matrix enhances the physical, chemical, and biological properties of NC hydrogels. Therefore, NC hydrogels are excellent candidates for artificial 3D biomaterials, particularly in tissue engineering applications, where they can mimic the chemical, mechanical, electrical, and biological properties of native tissues. A wide range of functional NMs and synthetic or natural organic polymers have been used to design new NC hydrogels with novel properties and tailored functionalities for biomedical uses. Each of these approaches can improve the development of NC hydrogels and, thus, provide advanced 3D biomaterials for biomedical applications.
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Affiliation(s)
- Andisheh Motealleh
- Physikalisches Institut and Center for Nanotechnology; Westfälische Wilhelms-Universität Münster; Heisenbergstrasse 11 D-48149 Münster Germany
| | - Nermin Seda Kehr
- Physikalisches Institut and Center for Nanotechnology; Westfälische Wilhelms-Universität Münster; Heisenbergstrasse 11 D-48149 Münster Germany
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16
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Wang D, Jin Y, Zhu X, Yan D. Synthesis and applications of stimuli-responsive hyperbranched polymers. Prog Polym Sci 2017. [DOI: 10.1016/j.progpolymsci.2016.09.005] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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17
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Goponenko AV, Dzenis YA. Role of Mechanical Factors in Applications of Stimuli-Responsive Polymer Gels - Status and Prospects. POLYMER 2016; 101:415-449. [PMID: 28348443 PMCID: PMC5365095 DOI: 10.1016/j.polymer.2016.08.068] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Due to their unique characteristics such as multifold change of volume in response to minute change in the environment, resemblance of soft biological tissues, ability to operate in wet environments, and chemical tailorability, stimuli responsive gels represent a versatile and very promising class of materials for sensors, muscle-type actuators, biomedical applications, and autonomous intelligent structures. Success of these materials in practical applications largely depends on their ability to fulfill application-specific mechanical requirements. This article provides an overview of recent application-driven development of covalent polymer gels with special emphasis on the relevant mechanical factors and properties. A short account of mechanisms of gel swelling and mechanical characteristics of importance to stimuli-responsive gels is presented. The review highlights major barriers for wider application of these materials and discusses latest advances and potential future directions toward overcoming these barriers, including interpenetrating networks, homogeneous networks, nanocomposites, and nanofilamentary gels.
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Affiliation(s)
- Alexander V. Goponenko
- Department of Mechanical and Materials Engineering and Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, NE 68588, USA
| | - Yuris A. Dzenis
- Department of Mechanical and Materials Engineering and Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, NE 68588, USA
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18
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Drozdov A, Christiansen JD. Structure-property relations for equilibrium swelling of cationic gels. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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19
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Seda Kehr N, Riehemann K. Controlled Cell Growth and Cell Migration in Periodic Mesoporous Organosilica/Alginate Nanocomposite Hydrogels. Adv Healthc Mater 2016; 5:193-7. [PMID: 26648333 DOI: 10.1002/adhm.201500638] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Indexed: 12/11/2022]
Abstract
Nanocomposite (NC) hydrogels with different periodic mesoporous organosilica (PMO) concentrations and a NC hydrogel bilayer with various PMO concentrations inside the layers of the hydrogel matrix are prepared. The effect of the PMO concentration on cell growth and migration of cells is reported. The cells migrate in the bilayer NC hydrogel towards higher PMO concentrations and from cell culture plates to NC hydrogel scaffolds.
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Affiliation(s)
- Nermin Seda Kehr
- Physikalisches Institut and CeNTech; Westfälische Wilhelms-Universität Münster; Heisenbergstraße 11 D-48149 Münster Germany
| | - Kristina Riehemann
- Physikalisches Institut and CeNTech; Westfälische Wilhelms-Universität Münster; Heisenbergstraße 11 D-48149 Münster Germany
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20
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Chen S, Wang L, Dong X, Liu X, Zhou J, Yang J, Zha L. Fabrication of monodispersed Au@Ag bimetallic nanorod-loaded nanofibrous membrane with fast thermo-responsiveness and its use as a smart free-standing SERS substrate. RSC Adv 2016. [DOI: 10.1039/c6ra04247c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Monodispersed core–shell structured Au@Ag bimetallic nanorods-loaded nanofibrous membrane with fast thermo-responsiveness was fabricated by electrospinning and subsequent heat treatment, which can be used as a smart free-standing SERS substrate.
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Affiliation(s)
- Siyuan Chen
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Materials Science and Engineering
- Donghua University
- Shanghai 201620
- P. R. China
| | - Liying Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Materials Science and Engineering
- Donghua University
- Shanghai 201620
- P. R. China
| | - Xu Dong
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecule Science
- Fudan University
- Shanghai 200433
- P. R. China
| | - Xiaoyun Liu
- Research Center for Analysis and Measurement
- Donghua University
- Shanghai 201620
- P. R. China
| | - Jianfeng Zhou
- Research Center for Analysis and Measurement
- Donghua University
- Shanghai 201620
- P. R. China
| | - Jianmao Yang
- Research Center for Analysis and Measurement
- Donghua University
- Shanghai 201620
- P. R. China
| | - Liusheng Zha
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Materials Science and Engineering
- Donghua University
- Shanghai 201620
- P. R. China
- Research Center for Analysis and Measurement
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21
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Hu B, Wright RA, Jiang S, Henn DM, Zhao B. Hybrid micellar network hydrogels of thermosensitive ABA triblock copolymer and polymer brush-grafted nanoparticles: Effect of LCST transition of polymer brushes on gel property. POLYMER 2016. [DOI: 10.1016/j.polymer.2015.11.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Krakovský I, Székely NK. SANS study on influence of temperature on nanophase separation in epoxy-based hydrogels. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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23
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Drozdov AD, deClaville Christiansen J. Modeling the effects of pH and ionic strength on swelling of polyelectrolyte gels. J Chem Phys 2015; 142:114904. [DOI: 10.1063/1.4914924] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A. D. Drozdov
- Center for Plastics Technology, Danish Technological Institute, Gregersensvej 7, Taastrup 2630, Denmark
- Department of Mechanical and Manufacturing Engineering, Aalborg University, Fibigerstraede 16, Aalborg 9220, Denmark
| | - J. deClaville Christiansen
- Department of Mechanical and Manufacturing Engineering, Aalborg University, Fibigerstraede 16, Aalborg 9220, Denmark
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24
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Drozdov AD, deClaville Christiansen J. Swelling of pH-sensitive hydrogels. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 91:022305. [PMID: 25768503 DOI: 10.1103/physreve.91.022305] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Indexed: 06/04/2023]
Abstract
A model is derived for the elastic response of polyelectrolyte gels subjected to unconstrained and constrained swelling. A gel is treated as a three-phase medium consisting of a solid phase (polymer network), solvent (water), and solutes (mobile ions). Transport of solvent and solutes is modeled as their diffusion through the network accelerated by an electric field formed by ions and accompanied by chemical reactions (dissociation of functional groups attached to the chains). Constitutive equations (including the van't Hoff law for ionic pressure and the Henderson-Hasselbach equation for ionization of chains) are derived by means of the free energy imbalance inequality. Good agreement is demonstrated between equilibrium swelling diagrams on several pH-sensitive gels and results of simulation. It is revealed that swelling of polyelectrolyte gels is driven by electrostatic repulsion of bound charges, whereas the effect of ionic pressure is of secondary importance.
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Affiliation(s)
- A D Drozdov
- Center for Plastics Technology, Danish Technological Institute, Gregersensvej 7, DK-2630 Taastrup, Denmark
- Department of Mechanical and Manufacturing Engineering, Aalborg University, Fibigerstraede 16, DK-9220 Aalborg, Denmark
| | - J deClaville Christiansen
- Department of Mechanical and Manufacturing Engineering, Aalborg University, Fibigerstraede 16, DK-9220 Aalborg, Denmark
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25
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Epoxy networks and hydrogels prepared from α,ω-diamino terminated poly(oxypropylene)-b-poly(oxyethylene)-b-poly(oxypropylene) and polyoxypropylene bis(glycidyl ether). Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2014.11.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Roeder L, Bender P, Kundt M, Tschöpe A, Schmidt AM. Magnetic and geometric anisotropy in particle-crosslinked ferrohydrogels. Phys Chem Chem Phys 2015; 17:1290-8. [DOI: 10.1039/c4cp04493b] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Particle-crosslinked polymer composites and gels have recently been shown to possess novel or improved properties due to a covalent particle–matrix interaction.
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Affiliation(s)
- Lisa Roeder
- Department Chemie
- Institut für Physikalische Chemie
- Universität zu Köln
- D-50939 Köln
- Germany
| | - Philipp Bender
- Technische Physik
- Universität des Saarlandes
- D-66041 Saarbrücken
- Germany
| | - Matthias Kundt
- Department Chemie
- Institut für Physikalische Chemie
- Universität zu Köln
- D-50939 Köln
- Germany
| | - Andreas Tschöpe
- Technische Physik
- Universität des Saarlandes
- D-66041 Saarbrücken
- Germany
| | - Annette M. Schmidt
- Department Chemie
- Institut für Physikalische Chemie
- Universität zu Köln
- D-50939 Köln
- Germany
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27
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Kehr NS, Atay S, Ergün B. Self-assembled Monolayers and Nanocomposite Hydrogels of Functional Nanomaterials for Tissue Engineering Applications. Macromol Biosci 2014; 15:445-63. [DOI: 10.1002/mabi.201400363] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Nermin Seda Kehr
- Physikalisches Institut and Center for Nanotechnology; Westfälische Wilhelms-Universität Münster; Heisenbergstrasse 11 D-48149 Münster Germany
| | - Seda Atay
- Department of Nanotechnology and Nanomedicine; Hacettepe University; 06800 Ankara Turkey
| | - Bahar Ergün
- Department of Chemistry; Biochemistry Division; Hacettepe University; 06800 Ankara Turkey
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Roeder L, Reckenthäler M, Belkoura L, Roitsch S, Strey R, Schmidt AM. Covalent Ferrohydrogels Based on Elongated Particulate Cross-Linkers. Macromolecules 2014. [DOI: 10.1021/ma501396j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- L. Roeder
- Department für Chemie, Universität zu Köln, Luxemburger Strasse 116, 50939 Köln, Germany
| | - M. Reckenthäler
- Department für Chemie, Universität zu Köln, Luxemburger Strasse 116, 50939 Köln, Germany
| | - L. Belkoura
- Department für Chemie, Universität zu Köln, Luxemburger Strasse 116, 50939 Köln, Germany
| | - S. Roitsch
- Department für Chemie, Universität zu Köln, Luxemburger Strasse 116, 50939 Köln, Germany
| | - R. Strey
- Department für Chemie, Universität zu Köln, Luxemburger Strasse 116, 50939 Köln, Germany
| | - A. M. Schmidt
- Department für Chemie, Universität zu Köln, Luxemburger Strasse 116, 50939 Köln, Germany
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29
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Hu B, Henn DM, Wright RAE, Zhao B. Hybrid micellar hydrogels of a thermosensitive ABA triblock copolymer and hairy nanoparticles: effect of spatial location of hairy nanoparticles on gel properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:11212-11224. [PMID: 25180712 DOI: 10.1021/la503091a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This article reports a method for control of spatial location of nanoparticles (NPs) in hybrid micellar hydrogels of a thermosensitive ABA triblock copolymer and polymer brush-grafted NPs (hairy NPs), either inside or outside the core of micelles, and the study of the effect of different locations of NPs on gel properties. Two batches of thermosensitive polymer brush-grafted, 17 nm silica NPs with different lower critical solution temperatures (LCSTs) and a thermosensitive ABA triblock copolymer composed of a poly(ethylene oxide) central block and thermosensitive outer blocks (ABA-D) were synthesized. The different locations of NPs were achieved by controlling the LCST of hairy NPs (LCST(NP)) relative to that of the thermosensitive outer blocks of ABA-D (LCST(ABA)). When the LCST(NP) and LCST(ABA) were similar, the NPs resided in the core of micelles upon heating from below the LCST(NP) and LCST(ABA). When the LCST(NP) was significantly higher, the NPs were located outside the core of micelles as confirmed by fluorescent resonance energy transfer. The effects of different locations of hairy NPs and NP-to-polymer mass ratio on properties of hybrid micellar hydrogels formed from aqueous solutions of ABA-D with a concentration of 10 wt % and various amounts of hairy NPs were studied by rheological measurements. The sol-gel transition temperature (T(sol-gel)) and dynamic storage modulus G' of the gels with NPs inside the core of micelles did not change much with increasing the NP-to-polymer mass ratio. In contrast, the T(sol-gel) of gels with NPs in the interstitial space among micelles increased slightly and the G' decreased significantly with the increase of the NP-to-polymer ratio. The hairy NPs in the interstitial space appeared to affect the formation of polymer networks and increase the fraction of polymer loops, resulting in a lower density of bridging chains and thus a lower G'. In addition, for gels with NPs in the interstitial space, a noticeable increase in G' was observed in the heating ramps above 40 °C, which was likely caused by the collapsed hairy NPs adsorbing polymer chains in the dangling and loop forms, increasing the density of bridging chains.
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Affiliation(s)
- Bin Hu
- Department of Chemistry, University of Tennessee , Knoxville, Tennessee 37996, United States
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30
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Haraguchi K. Soft Nanohybrid Materials Consisting of Polymer–Clay Networks. ORGANIC-INORGANIC HYBRID NANOMATERIALS 2014. [DOI: 10.1007/12_2014_287] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Yang J, Han CR, Duan JF, Xu F, Sun RC. In situ grafting silica nanoparticles reinforced nanocomposite hydrogels. NANOSCALE 2013; 5:10858-10863. [PMID: 24089085 DOI: 10.1039/c3nr04252a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Highly flexible nanocomposite hydrogels were prepared by using silica nanoparticles (SNPs) as fillers and multi-functional cross-links to graft hydrophilic poly(acrylic acid) (PAA) by free radical polymerization from an aqueous solution. The SNPs were collected by neighboring polymer chains and dispersed uniformly within a PAA matrix. The mechanical properties of the nanocomposite hydrogels were tailored by the concentration of SNPs according to the percolation model. It was proposed that covalent bonds of adsorbed chains on the filler surface resulted in the formation of a shell of an immobilized glassy layer and trapped entanglements, where the glassy polymer layer greatly enhanced the elastic modulus and the release of trapped entanglements at deformation contributed to the viscoelastic properties.
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Affiliation(s)
- Jun Yang
- College of Materials Science and Technology, Beijing Forestry University, Beijing, China.
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Ning J, Li G, Haraguchi K. Synthesis of Highly Stretchable, Mechanically Tough, Zwitterionic Sulfobetaine Nanocomposite Gels with Controlled Thermosensitivities. Macromolecules 2013. [DOI: 10.1021/ma4009059] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jinyan Ning
- State Key Laboratory for Modification
of Chemical Fibers and Polymer Materials, College of Materials Science
and Engineering, Donghua University, Shanghai,
201620, China
- Material
Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado,
Sakura, Chiba, 285-0078, Japan
| | - Guang Li
- State Key Laboratory for Modification
of Chemical Fibers and Polymer Materials, College of Materials Science
and Engineering, Donghua University, Shanghai,
201620, China
| | - Kazutoshi Haraguchi
- Material
Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado,
Sakura, Chiba, 285-0078, Japan
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34
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Rose S, Dizeux A, Narita T, Hourdet D, Marcellan A. Time Dependence of Dissipative and Recovery Processes in Nanohybrid Hydrogels. Macromolecules 2013. [DOI: 10.1021/ma400447j] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Séverine Rose
- PPMD, Physico-Chimie des Polymères
et des Milieux
Dispersés (UMR 7615), UPMC-CNRS-ESPCI, 10 rue Vauquelin, 75005 Paris Cedex 05, France
| | - Alexandre Dizeux
- PPMD, Physico-Chimie des Polymères
et des Milieux
Dispersés (UMR 7615), UPMC-CNRS-ESPCI, 10 rue Vauquelin, 75005 Paris Cedex 05, France
| | - Tetsuharu Narita
- PPMD, Physico-Chimie des Polymères
et des Milieux
Dispersés (UMR 7615), UPMC-CNRS-ESPCI, 10 rue Vauquelin, 75005 Paris Cedex 05, France
| | - Dominique Hourdet
- PPMD, Physico-Chimie des Polymères
et des Milieux
Dispersés (UMR 7615), UPMC-CNRS-ESPCI, 10 rue Vauquelin, 75005 Paris Cedex 05, France
| | - Alba Marcellan
- PPMD, Physico-Chimie des Polymères
et des Milieux
Dispersés (UMR 7615), UPMC-CNRS-ESPCI, 10 rue Vauquelin, 75005 Paris Cedex 05, France
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35
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Xu L, Zhang X, Zhu C, Zhang Y, Fu C, Yang B, Tao L, Wei Y. Nonionic polymer cross-linked chitosan hydrogel: preparation and bioevaluation. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:1564-74. [DOI: 10.1080/09205063.2013.781934] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Liangxin Xu
- a Department of Chemistry and the Tsinghua Center for Frontier Polymer Research , Tsinghua University , Beijing , 100084 , P.R. China
| | - Xiaoyong Zhang
- a Department of Chemistry and the Tsinghua Center for Frontier Polymer Research , Tsinghua University , Beijing , 100084 , P.R. China
| | - Chongyu Zhu
- a Department of Chemistry and the Tsinghua Center for Frontier Polymer Research , Tsinghua University , Beijing , 100084 , P.R. China
| | - Yaling Zhang
- a Department of Chemistry and the Tsinghua Center for Frontier Polymer Research , Tsinghua University , Beijing , 100084 , P.R. China
| | - Changkui Fu
- a Department of Chemistry and the Tsinghua Center for Frontier Polymer Research , Tsinghua University , Beijing , 100084 , P.R. China
| | - Bin Yang
- a Department of Chemistry and the Tsinghua Center for Frontier Polymer Research , Tsinghua University , Beijing , 100084 , P.R. China
| | - Lei Tao
- a Department of Chemistry and the Tsinghua Center for Frontier Polymer Research , Tsinghua University , Beijing , 100084 , P.R. China
| | - Yen Wei
- a Department of Chemistry and the Tsinghua Center for Frontier Polymer Research , Tsinghua University , Beijing , 100084 , P.R. China
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Abstract
A major scientific challenge of the past decade pertaining to the field of soft matter has been to craft 'adaptable' materials, inspired by nature, which can dynamically alter their structure and functionality on demand, in response to triggers produced by environmental changes. Amongst these, 'smart' surfactant wormlike micelles, responsive to external stimuli, are a particularly recent area of development, yet highly promising, given the versatility of the materials but simplicity of the design-relying on small amphiphilic molecules and their spontaneous self-assembly. The switching 'on' and 'off' of the micellar assembly structures has been reported using electrical, optical, thermal or pH triggers and is now envisaged for multiple stimuli. The structural changes, in turn, can induce major variations in the macroscopic characteristics, affecting properties such as viscosity and elasticity and sometimes even leading to a spontaneous and effective 'sol-gel' transition. These original smart materials based on wormlike micelles have been successfully used in the oil industry, and offer a significant potential in a wide range of other technological applications, including biomedicine, cleaning processes, drag reduction, template synthesis, to name but a few. This review will report results in this field published over the last few years, describe the potential and practical applications of stimuli-responsive wormlike micelles and point out future challenges.
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Affiliation(s)
- Zonglin Chu
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, PR China
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37
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Li D, Zhang X, Simon GP, Wang H. Forward osmosis desalination using polymer hydrogels as a draw agent: influence of draw agent, feed solution and membrane on process performance. WATER RESEARCH 2013; 47:209-215. [PMID: 23103058 DOI: 10.1016/j.watres.2012.09.049] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 09/23/2012] [Accepted: 09/25/2012] [Indexed: 06/01/2023]
Abstract
We have previously reported the use of hydrogel particles as the draw agent for forward osmosis desalination. In the present work, the effects of draw agent, feed concentration and membrane on the process performance were systematically examined. Our results showed that the incorporation of carbon filler particles in polymer hydrogels led to enhanced swelling ratios of the draw agents and thus higher water fluxes in the FO process. The composite polymer hydrogel particles of sizes ranging from 100 μm to 200 μm as draw agents induced greater water fluxes in FO desalination as compared with those with larger particle sizes (500-700 μm). Similar to other types of draw solutes, as the salt concentration in the feed increased, the water flux created by the polymer hydrogel draw agent decreased; the use of a cellulose triacetate forward osmosis membrane resulted in higher water flux compared with the use of a polyamide composite reverse osmosis membrane.
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Affiliation(s)
- Dan Li
- Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
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Abstract
Hydrogels have had extensive applications in scientific and industrial applications since their invention over 50 years ago. Responsive hydrogels based on temperature, light, and pH stimuli have been developed by changing the chemical components of the matrix structure. On the other hand, metallic nanoparticles of different shapes and sizes have been prepared by physical as well as chemical methods. These inorganic assemblies are currently widely used in the biomedical sciences and engineering fields. Recently, the combined use of hydrogels and nanoparticles in a single entity has gained enormous attention in areas such as catalysts, surface-enhanced Raman scattering, biosensors, and drug delivery. In this review, recent literature describing these technologies is summarized and an outlook on the promising future of this emerging field is provided.
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Wang X, Li D, Yang F, Shen H, Li Z, Wu D. Controlled cross-linking strategy: from hybrid hydrogels to nanoparticle macroscopic aggregates. Polym Chem 2013. [DOI: 10.1039/c3py00811h] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Roeder L, Bender P, Tschöpe A, Birringer R, Schmidt AM. Shear modulus determination in model hydrogels by means of elongated magnetic nanoprobes. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/polb.23202] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Ziółkowski B, Bleek K, Twamley B, Fraser KJ, Byrne R, Diamond D, Taubert A. Magnetic Ionogels (MagIGs) Based on Iron Oxide Nanoparticles, Poly(N-isopropylacrylamide), and the Ionic Liquid Trihexyl(tetradecyl)phosphonium Dicyanamide. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200597] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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42
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Nambam JS, Philip J. Thermogelling properties of triblock copolymers in the presence of hydrophilic Fe3O4 nanoparticles and surfactants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:12044-12053. [PMID: 22845748 DOI: 10.1021/la302310y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We investigate the supramolecular structure formed by thermogelation of a triblock polymer in the presence of nanoparticles and surfactant using rheometry and small-angle X-ray scattering (SAXS). The triblock copolymer, nanoparticle, and surfactant used in this study are poly(oxyethylene-oxypropylene-oxyethylene), Pluronic F108, Fe(3)O(4) nanoparticles, and sodium dodecyl surfactant, respectively. Addition of 1-5 wt % of Fe(3)O(4) nanoparticle, of average particle size ~10 nm, in a weak template of F108 (15 wt %) shows a decrease in the onset of gelation temperature and dramatic alteration in the viscoelastic moduli. The nanocomposite samples show a linear viscoelastic regime up to 5% strain. The SAXS measurement shows that the intermicellar spacing of the supramolecular structure of pure F108 is ~16.5 nm, and the supramolecular structure is destroyed when nanoparticles and surfactants are incorporated in it. Further, the addition of anionic surfactant to nanocomposites leads to a dramatic reduction in the viscoelastic properties due to strong electrostatic barrier imparted by the surfactant headgroup that prevents the formation of hexagonally ordered micelles. Our results show that the thermogelation is due to the clustering of nanoparticles into a fractal network rather than a close-packed F108 micelles, in agreement with the recent findings in Pluronic F127-laponite systems.
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Affiliation(s)
- J S Nambam
- SMARTS, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India
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43
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Sato M, Kawahara Y, Morito S, Yamaguchi I, Fujita Y. Visible light-emitting and temperature-sensitive copolymer gel/ZnO nanocomposites loaded with surface-modified ZnO nanoparticles having polyethylene glycol chains. Eur Polym J 2012. [DOI: 10.1016/j.eurpolymj.2012.04.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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44
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Liu J, Yang X, Wang K, Wang Q, Ji H, Wu C, Li J, He X, Tang J, Huang J. Combining physical embedding and covalent bonding for stable encapsulation of quantum dots into agarose hydrogels. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm13090k] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Saha S, Copic D, Bhaskar S, Clay N, Donini A, Hart AJ, Lahann J. Chemically Controlled Bending of Compositionally Anisotropic Microcylinders. Angew Chem Int Ed Engl 2011; 51:660-5. [DOI: 10.1002/anie.201105387] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Revised: 10/12/2011] [Indexed: 11/11/2022]
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46
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Saha S, Copic D, Bhaskar S, Clay N, Donini A, Hart AJ, Lahann J. Chemically Controlled Bending of Compositionally Anisotropic Microcylinders. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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47
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Sambe L, Stoffelbach F, Lyskawa J, Delattre F, Fournier D, Bouteiller L, Charleux B, Cooke G, Woisel P. Host–Guest Modulation of the Micellization of a Tetrathiafulvalene-Functionalized Poly(N-isopropylacrylamide). Macromolecules 2011. [DOI: 10.1021/ma2009854] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Léna Sambe
- Université Lille Nord de France, F-59000 Lille, France
- USTL, Unité des Matériaux Et Transformations (UMET, UMR 8207), Equipe Ingénierie des Systèmes polymères (ISP), F-59655 Villeneuve d’Ascq Cedex, France
| | - François Stoffelbach
- UMR 7610, Laboratoire de Chimie des Polymères, UPMC Université Paris 6—CNRS, 3, rue Galilée 94200 Ivry sur Seine, France
| | - Joel Lyskawa
- Université Lille Nord de France, F-59000 Lille, France
- USTL, Unité des Matériaux Et Transformations (UMET, UMR 8207), Equipe Ingénierie des Systèmes polymères (ISP), F-59655 Villeneuve d’Ascq Cedex, France
| | - François Delattre
- UCEIV (Unité de Chimie Environnementale et Interactions sur le Vivant), EA 4492, Université du Littoral Côte d’Opale, Av. M. Schumann 59140 Dunkerque, France
| | - David Fournier
- Université Lille Nord de France, F-59000 Lille, France
- USTL, Unité des Matériaux Et Transformations (UMET, UMR 8207), Equipe Ingénierie des Systèmes polymères (ISP), F-59655 Villeneuve d’Ascq Cedex, France
| | - Laurent Bouteiller
- UMR 7610, Laboratoire de Chimie des Polymères, UPMC Université Paris 6—CNRS, 3, rue Galilée 94200 Ivry sur Seine, France
| | - Bernadette Charleux
- CPE Lyon, CNRS UMR 5265, Laboratoire de Chimie Catalyse Polymères et Procédés (C2P2), Equipe LCPP Bat 308F, Université de Lyon, Université Lyon 1, 43 Bd du11 novembre 1918, F-69616 Villeurbanne, France
| | - Graeme Cooke
- Glasgow Centre for Physical Organic Chemistry, WestCHEM, School of Chemistry, University of Glasgow, Joseph Black Building, Glasgow, U.K., G12 8QQ, U.K
| | - Patrice Woisel
- Université Lille Nord de France, F-59000 Lille, France
- USTL, Unité des Matériaux Et Transformations (UMET, UMR 8207), Equipe Ingénierie des Systèmes polymères (ISP), F-59655 Villeneuve d’Ascq Cedex, France
- ENSCL, F-59655 Villeneuve d’Ascq, France
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48
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Messing R, Frickel N, Belkoura L, Strey R, Rahn H, Odenbach S, Schmidt AM. Cobalt Ferrite Nanoparticles as Multifunctional Cross-Linkers in PAAm Ferrohydrogels. Macromolecules 2011. [DOI: 10.1021/ma102708b] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Renate Messing
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Natalia Frickel
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
| | - Lhoussaine Belkoura
- Department für Chemie, Universität zu Köln, Luxemburger Strasse 116, D-50939 Köln, Germany
| | - Reinhard Strey
- Department für Chemie, Universität zu Köln, Luxemburger Strasse 116, D-50939 Köln, Germany
| | - Helene Rahn
- Institut für Strömungsmechanik, Professur für Magnetofluiddynamik, Technische Universität Dresden, George-Bähr-Strasse 3, D-01069 Dresden, Germany
| | - Stefan Odenbach
- Institut für Strömungsmechanik, Professur für Magnetofluiddynamik, Technische Universität Dresden, George-Bähr-Strasse 3, D-01069 Dresden, Germany
| | - Annette M. Schmidt
- Department für Chemie, Universität zu Köln, Luxemburger Strasse 116, D-50939 Köln, Germany
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