Relevant bibliographies by topics / Stimuli-responsive hydrogel

Academic literature on the topic 'Stimuli-responsive hydrogel'

Author: Grafiati
Published: 14 March 2023

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Journal articles on the topic "Stimuli-responsive hydrogel"

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Jiang, Yuheng, Ying Wang, Qin Li, Chen Yu, and Wanli Chu. "Natural Polymer-based Stimuli-responsive Hydrogels." Current Medicinal Chemistry 27, no. 16 (June 4, 2020): 2631–57. http://dx.doi.org/10.2174/0929867326666191122144916.

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The abilities of intelligent polymer hydrogels to change their structure and volume phase in response to external stimuli have provided new possibilities for various advanced technologies and great research and application potentials in the medical field. The natural polymer-based hydrogels have the advantages of environment-friendliness, rich sources and good biocompatibility. Based on their responsiveness to external stimuli, the natural polymer-based hydrogels can be classified into the temperature-responsive hydrogel, pH-responsive hydrogel, light-responsive hydrogel, electricresponsive hydrogel, redox-responsive hydrogel, enzyme-responsive hydrogel, magnetic-responsive hydrogel, multi-responsive hydrogel, etc. In this review, we have compiled some recent studies on natural polymer-based stimuli-responsive hydrogels, especially the hydrogels prepared from polysaccharides. The preparation methods, properties and applications of these hydrogels in the medical field are highlighted.
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Gorantla, Srividya, Tejashree Waghule, Vamshi Krishna Rapalli, Prem Prakash Singh, Sunil Kumar Dubey, Ranendra Narayan Saha, and Gautam Singhvi. "Advanced Hydrogels Based Drug Delivery Systems for Ophthalmic Delivery." Recent Patents on Drug Delivery & Formulation 13, no. 4 (April 29, 2020): 291–300. http://dx.doi.org/10.2174/1872211314666200108094851.

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Hydrogels are aqueous gels composed of cross-linked networks of hydrophilic polymers. Stimuli-responsive based hydrogels have gained focus over the past 20 years for treating ophthalmic diseases. Different stimuli-responsive mechanisms are involved in forming polymer hydrogel networks, including change in temperature, pH, ions, and others including light, thrombin, pressure, antigen, and glucose-responsive. Incorporation of nanocarriers with these smart stimuli-responsive drug delivery systems that can extend the duration of action by increasing ocular bioavailability and reducing the dosing frequency. This review will focus on the hydrogel drug delivery systems highlighting the gelling mechanisms and emerging stimuli-responsive hydrogels from preformed gels, nanogels, and the role of advanced 3D printed hydrogels in vision-threatening diseases like age-related macular degeneration and retinitis pigmentosa. It also provides insight into the limitations of hydrogels along with the safety and biocompatibility of the hydrogel drug delivery systems.
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Štular, Danaja, Matic Šobak, Mohor Mihelčič, Ervin Šest, Ilija German Ilić, Ivan Jerman, Barbara Simončič, and Brigita Tomšič. "Proactive Release of Antimicrobial Essential Oil from a “Smart” Cotton Fabric." Coatings 9, no. 4 (April 10, 2019): 242. http://dx.doi.org/10.3390/coatings9040242.

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Two temperature and pH responsive submicron hydrogels based on poly(N- methylenebisacrylamide), chitosan and β-cyclodextrines (PNCS/CD hydrogel) with varying poly(N-isopropylacrylamide) to chitosan ratios were synthesized according to a simplified procedure, reflecting improved stimuli responsive properties and excellent bio-barrier properties, granted by incorporated chitosan. Hydrogels were applied to cotton-cellulose fabric as active coatings. Subsequently, antimicrobially active savory essential oil (EO) was embedded into the hydrogels in order to develop temperature- and pH-responsive cotton-cellulose fabric with double antimicrobial activity, i.e., bio-barrier formation of chitosan along with the proactive release of savory EO at predetermined conditions. The influence of the hydrogels chemical composition on stimuli responsive and antibacterial properties were assessed. Both PNCS/CD hydrogels showed stimuli responsiveness along with controlled release of savory EO. The chemical composition of the hydrogels strongly influenced the size of the hydrogel particles, their temperature and pH responsiveness, and the bio-barrier forming activity. The increased concentration of chitosan resulted in superior overall stimuli responsiveness and excellent synergy between the antimicrobial activities of the hydrogel and released savory EO.
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Kabir, M. Hasnat, Yosuke Watanabe, Masato Makino, Jin Gong, and Hidemitsu Furukawa. "J0440104 External Stimuli Responsive Hydrogel." Proceedings of Mechanical Engineering Congress, Japan 2014 (2014): _J0440104——_J0440104—. http://dx.doi.org/10.1299/jsmemecj.2014._j0440104-.

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Tokarev, Ihor, and Sergiy Minko. "Stimuli-responsive hydrogel thin films." Soft Matter 5, no. 3 (2009): 511–24. http://dx.doi.org/10.1039/b813827c.

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Glazer, P. J., J. Leuven, H. An, S. G. Lemay, and E. Mendes. "Multi-Stimuli Responsive Hydrogel Cilia." Advanced Functional Materials 23, no. 23 (January 18, 2013): 2964–70. http://dx.doi.org/10.1002/adfm.201203212.

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Bates, Jeffrey S., and Jules J. Magda. "Time Interval and Continuous Testing of Stimuli Responsive Hydrogels." MRS Proceedings 1622 (2014): 153–59. http://dx.doi.org/10.1557/opl.2014.7.

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ABSTRACTResearchers have investigated hydrogels as potential materials for biological monitoring. Hydrogel compositions have been designed to respond to changes in temperature, pH, glucose concentration and ionic strength concentration. Hydrogels designed to respond to changes in environmental conditions have demonstrated their ability to respond via a swelling or shrinking action. This swelling behavior can be exploited using a variety of signal transduction methods. While this technology shows promise, the degradation of hydrogel materials has not yet been characterized with respect to the shelf life of hydrogel samples or to their use in continuous testing. A series of experiments were performed to test hydrogels stored for extended periods of time then subjected to oscillatory testing, and the results have been analyzed to determine whether hydrogels can be used for extended periods of time for biological sensing applications.
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Naddaf, A. A., H. J. Bart, and I. Tsibranska. "Diffusion Kinetics of BSA Protein in Stimuli Responsive Hydrogels." Defect and Diffusion Forum 297-301 (April 2010): 664–69. http://dx.doi.org/10.4028/www.scientific.net/ddf.297-301.664.

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A two-dimensional diffusion mathematical model with moving boundary conditions was developed to evaluate the diffusion kinetics of bovine serum albumin (BSA) through the network of poly(N-isopropylacrylamide) hydrogel (poly(NIPAAm)). These thermosensitive hydrogels were experimentally tested for their response to BSA by exposing the hydrogel disc-shaped geometry to different temperatures and varied protein concentration. The BSA release, which is coupled with hydrogel shrinking when reaching the low critical solution temperature (LCST) of poly(NIPAAm), could be satisfactory described by the model. During the early course of hydrogel shrinking, the hydrogel outermost surface layer collapses to form a dense layer in comparison to the interior bulk matrix. Due to the hydrophobic interaction between polymer chains and polymer protein, the formed layer is thick and dense enough to restrict the outward permeation of entrapped BSA molecules from the hydrogel interior, which greatly slows down the release rate. A good agreement between experimental and calculated data was achieved.
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Jian, Yukun, Baoyi Wu, Xuxu Yang, Yu Peng, Dachuan Zhang, Yang Yang, Huiyu Qiu, Huanhuan Lu, Jiawei Zhang, and Tao Chen. "Stimuli-responsive hydrogel sponge for ultrafast responsive actuator." Supramolecular Materials 1 (December 2022): 100002. http://dx.doi.org/10.1016/j.supmat.2021.100002.

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Madivoli, Edwin Shigwenya, Justine Veronique Schwarte, Patrick Gachoki Kareru, Anthony Ngure Gachanja, and Katharina M. Fromm. "Stimuli-Responsive and Antibacterial Cellulose-Chitosan Hydrogels Containing Polydiacetylene Nanosheets." Polymers 15, no. 5 (February 21, 2023): 1062. http://dx.doi.org/10.3390/polym15051062.

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Herein, we report a stimuli-responsive hydrogel with inhibitory activity against Escherichia coli prepared by chemical crosslinking of carboxymethyl chitosan (CMCs) and hydroxyethyl cellulose (HEC). The hydrogels were prepared by esterification of chitosan (Cs) with monochloroacetic acid to produce CMCs which were then chemically crosslinked to HEC using citric acid as the crosslinking agent. To impart a stimuli responsiveness property to the hydrogels, polydiacetylene-zinc oxide (PDA-ZnO) nanosheets were synthesized in situ during the crosslinking reaction followed by photopolymerization of the resultant composite. To achieve this, ZnO was anchored on carboxylic groups in 10,12-pentacosadiynoic acid (PCDA) layers to restrict the movement of the alkyl portion of PCDA during crosslinking CMCs and HEC hydrogels. This was followed by irradiating the composite with UV radiation to photopolymerize the PCDA to PDA within the hydrogel matrix so as to impart thermal and pH responsiveness to the hydrogel. From the results obtained, the prepared hydrogel had a pH-dependent swelling capacity as it absorbed more water in acidic media as compared to basic media. The incorporation of PDA-ZnO resulted in a thermochromic composite responsive to pH evidenced by a visible colour transition from pale purple to pale pink. Upon swelling, PDA-ZnO-CMCs-HEC hydrogels had significant inhibitory activity against E. coli attributed to the slow release of the ZnO nanoparticles as compared to CMCs-HEC hydrogels. In conclusion, the developed hydrogel was found to have stimuli-responsive properties and inhibitory activity against E. coli attributed to zinc nanoparticles.
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Dissertations / Theses on the topic "Stimuli-responsive hydrogel"

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Kim, Jongseong. "Stimuli-Responsive Hydrogel Microlenses." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14496.

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This dissertation is aimed towards using stimuli-responsive pNIPAm-co-AAc microgels synthesized via free-radical precipitation polymerization to prepare stimuli-responsive hydrogel microlenses. Chapter 1 gives a detailed background of hydrogels, and their applications using responsive hydrogels. Chapter 2 describes the use of colloidal hydrogel microparticles as microlens elements and the fabrication method to form the hydrogel microlens arrays via Coulombic interactions. Chapter 3 shows the demonstration of tunable microlenses prepared by the method used in Chapter 2. In this chapter the microlenses are subjected to various pH and temperature in aqueous solutions. Chapter 4 describes that the microlens arrays constructed on Au nanoparticle-functionalized glass substrates by self-assembly display dramatic changes in lensing power in response to an impingent frequency-doubled Nd:YAG laser. The microlens photoswitching is highly reversible, with sub-millisecond lens switching times. Chapter 5 describes the development of bioresponsive hydrogel microlenses as a new protein detection technology. The microlens method is shown to be very specific for the target protein, with no detectable interference from nonspecific protein binding. Chapter 6 describes the use of bioresponsive hydrogel microlenses as a label-free biosensing scaffolding. These microstructures simultaneously act as the biosensors scaffolding/immobilization architecture, transducer, amplifier, and also allow for broad tunability of the analyte concentration to which the microlens is sensitive.
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Salehpour, Somaieh. "Synthesis of Stimuli-responsive Hydrogels from Glycerol." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20584.

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Due to an increased environmental awareness and thus, concerns over the use of fossil-based monomer for polymer production, there is an ongoing effort to find alternatives to non-renewable traditional monomers. This has ushered in the rapid growth in the development of bio-based materials such as green monomers and biodegradable polymers from vegetable and animal resources. Glycerol, as a renewable bio-based monomer, is an interesting candidate for sustainable polymer production. Glycerol is a renewable material that is a by-product of the transesterification of vegetable oils to biodiesel. Utilization of the excess glycerol derived from the growing biodiesel industry is important to oleochemical industries. The main objective of this thesis was to produce high molecular weight polyglycerol from glycerol and synthesize stimuli-responsive polyglycerol hydrogels. The work began with an investigation of the step-growth polymerization of glycerol to relatively high molecular weight polyglycerol using several catalysts. The catalytic reaction mechanisms were compared and the polymer products were fully analyzed. High molecular weight partially branched polyglycerol with multimodal molecular weight distributions was obtained. The polymerization of glycerol proceeded fastest with sulphuric acid as catalyst as indicated by the highest observed conversion of monomer along with the highest molecular weights. Theoretical models were used to predict the gel point and to calculate monomer functionality. High molecular weight polyglycerol was used to synthesize novel stimuli-responsive hydrogels. Real-time monitoring of step-growth polymerization of glycerol was investigated using in-line and off-line Attenuated Total Reflectance/Fourier Transform infrared (ATR-FTIR) technique.
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Sterner, Olof. "Swelling and protein adsorption characteristics of stimuli-responsive hydrogel gradients." Thesis, Linköping University, Department of Physics, Chemistry and Biology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-58586.

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In this work, a gradient of interpenetrating polymer networks, consisting of anionic

and cationic polymers, has been investigated with respect to protein resistant

properties and swelling characteristics at different pH and ionic strength

conditions.

 

The swelling and protein adsorption have been studied using in situ spectroscopic

ellipsometry(SE) and imaging surface plasmon resonance(iSPR) respectively.

It has been shown that, by altering the buffer pH, the region of lowest

protein adsorption on the surface could be moved laterally. The swelling has

similarly been shown to respond to both changes in pH and ionic strength. Additionally,

the arise of surface charge and the polymer swelling in solution, both a

consequence of the ionisation of fixed charges on the polymer, have been indicated

to occur at different buffer pH.

 

The studied polymer systems show promising properties for future applications

in, for example, the biosensor area, where the surface chemistry can be

tailor-made to work optimally in a given environment.

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Gicquel, Erwan. "Development of stimuli-responsive cellulose nanocrystals hydrogels for smart applications." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI105/document.

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L’originalité de ce projet consiste au développement et à l’étude de nouvelles structures hybrides à base de nanocelluloses et de polymères stimulables. En particulier, c’est le design d’hydrogels aux propriétés thermosensibles qui est visé. Les nanocelluloses - nanoparticules issues de la cellulose - sont de deux types : les nanocristaux de cellulose (CNCs) et les nanofibrilles de cellulose (CNFs) et possèdent des propriétés bien particulières. Cette étude s’est concentrée sur l’élaboration d’hydrogels de CNCs. Plusieurs polymères thermosensibles ont été utilisés pour leur biocompatibilité et leur température de solution critique (LCST) aux abords de la température du corps humain. Ce travail a consisté en (i) la préparation des systèmes sur les principes de la chimie verte, (ii) l’étude rhéologique de ces gels thermosensibles et (iii) l’élaboration d’applications à forte valeur ajoutée pour ces biomatériaux uniques. A travers l’utilisation de grands équipements (SANS, SAXS), les interactions physico-chimiques CNCs/polymères ont été étudiées. L’utilisation de block copolymères a permis l’obtention de suspension de CNCs aux propriétés rhéologiques spécifiques : de liquide a température ambiante à gel viscoélastique à température du corps. D’un point vue applicatif, les hydrogels ainsi réalisés ont permis le déploiement de systèmes injectables pour le biomédical ainsi que des surfaces thermosensibles.Mots clés : nanocristaux de cellulose, hydrogel, thermosensible, stimulable
This project consists to develop and study new hybrid structures based on nanocelluloses and stimuli-responsive polymers, in particular, thermo-responsive polymers. Nanocelluloses - nanoparticles extracted from cellulose - exist in two forms: cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs). This study focused on the design of CNCs hydrogels with stimuli-responsive polymers. Several thermo-responsive polymers have been used for their biocompatibility and lower critical solution temperature (LCST) close to body temperature. This work consisted of (i) preparation of systems using the principles of green chemistry, (ii) the rheological study of these thermo-sensitive hydrogels, and (iii) the development of smart applications for these unique biomaterials. Through the use of state of the art technologies (SANS, SAXS), physicochemical interactions between the polymers and CNCs have been studied. The use of block copolymers made it possible to create CNCs-based hydrogels with specific rheological properties: liquid at ambient temperature to viscoelastic gel at body temperature. These hydrogels can be used in the creation of injectable systems for biomedical applications, as well as thermosensitive surfaces.Key-words: Cellulose nanocrystals, hydrogel, thermo-responsive, stimuli-responsive
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Tanaka, Wataru. "Development of stimuli-responsive supramolecular hydrogels relying on self-sorting." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263692.

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Binti, Adrus Nadia [Verfasser], Mathias [Akademischer Betreuer] Ulbricht, and Christian [Akademischer Betreuer] Mayer. "Stimuli-Responsive Hydrogels and Hydrogel Pore-Filled Composite Membranes / Nadia Adrus. Gutachter: Christian Mayer. Betreuer: Mathias Ulbricht." Duisburg, 2012. http://d-nb.info/1021899720/34.

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Cho, Jae Kyu. "The dynamics and phase behavior of suspensions of stimuli-responsive colloids." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31682.

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Thesis (Ph.D)--Chemical Engineering, Georgia Institute of Technology, 2010.
Committee Chair: Victor Breedveld; Committee Member: Eric W. Weeks; Committee Member: Hang Lu; Committee Member: J. Carson Meredith; Committee Member: L. Andrew Lyon. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Karasinski, Michael A. "Manufacturing Microfluidic Flow Focusing Devices For Stimuli Responsive Alginate Microsphere Generation And Cell Encapsulation." ScholarWorks @ UVM, 2017. http://scholarworks.uvm.edu/graddis/756.

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In this paper a novel stimuli responsive hydrogel material, methacrylated sodium alginate beta-cyclodextrin (Alg-MA-β-CD), was used in combination with a microfluidic device to create microspheres. Currently there is no reliable method for fabricating homogeneous stimuli-responsive microspheres, in-house microfluidic devices are not reliable in manufacture quality or long-term use. Alginate hydrogels have many attractive characteristics for bioengineering applications and are commonly used to mimic the features and properties of the extracellular matrix (ECM). Human mesenchymal stem cells (hMSCs) are of top interest to tissue engineers. hMSCs are widely available and can be harvested and cultured directly out of human bone marrow. hMSCs have the ability to differentiate into osteoblasts, adipocytes, chondrocytes, muscle cells, and stromal fibroblasts depending on mechanical signals transmitted through surrounding ECM. The biomechanical properties of alginate based stimuli-responsive hydrogels can be tuned to match those of different types of tissues. When trying to transport and control the differentiation of hMSCs into generating new tissues or regenerating damaged tissues, it is highly beneficial to encapsulate the cells inside a microsphere made from these hydrogels. The proposed research objectives are: 1) To optimize fabrication techniques and create functional microfluidic devices; 2) Analyze the effects of flow parameters on microsphere production; and 3) Encapsulate viable hMSCs inside multi-stimuli responsive alginate microspheres using the fabricated microfluidic devices (MFDs). In this study, photolithography microfabrication methods were used to create flow-focusing style MFDs. The hydrogel materials were characterized via rheological methods. Syringe pumps controlled flow rates of fluids through the devices. Active droplets formation was monitored through a camera attached to an inverted microscope, where images were analyzed. Microsphere production was analyzed optically and characterized. Alg-MA-β-CD polymer solutions containing hMSCs were encapsulated, and a live/dead florescence assay was preformed to verify cell viability. Using a modified fabrication process it was possible to manufacture Alg-MA-β-CD microspheres and encapsulate and maintain viable hMSCs inside.
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Maslovskis, Antons. "Responsive hydrogels using self-assembling polymer-peptide conjugates." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/responsive-hydrogels-using-selfassembling-polymerpeptide-conjugates(ca090402-aaa1-4729-8d0d-76dd07401521).html.

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Stimuli-responsive polymers and self-assembling peptides represent two classes of materials with interesting properties and great potential to be used as biomaterials. The conjugation of polymer with peptide offers a way to combine the controlled chemical, mechanical, and thermal properties of polymer with the functionality of designed bioactive group. Pure hybrid materials with the characteristics of individual components or systems containing hybrid materials became attractive for applications in drug delivery and tissue engineering. This work focused on systems where the thermo-responsive properties of a polymer were combined with the gelling properties of two different ionic-complementary peptides via conjugation. The prototypical thermo-responsive polymer poly(N-isopropylacrylamide) (PNIPAAm) was chosen due to its lower critical solution temperature (LCST) ~32°C being close to body temperature. Ionic-complementary oligo-peptides, containing the alternating hydrophobic/hydrophilic and charged/uncharged amino acids, phenylalanine (F), glutamic acid (E) and lysine (K), were selected as they are known to form β-sheet rich fibrillar networks at low concentrations. Two peptide sequences with different charge distribution were chosen: FEFEFKFK and FEFKFEFK which form self-supporting gels at ~17 and 10 mg ml-1 respectively. Polymer-peptide conjugates were used to confer self-assembling and thermo-responsive behaviour to the system.Thermo-responsive PNIPAAm-rich hydrogels were obtained by targeting different degrees of functionalisation of PNIPAAm with the self-assembling peptides. Two series of such systems were prepared by using either a thiol-modified FEFEFKFK or a thiol-modified FEFKFEFK peptide as the chain-transfer agent in the free radical polymerisation of NIPAAm. The resulting polymer/conjugate mixtures were studied by proton nuclear magnetic resonance (1H NMR). The polymer/conjugate ratios were calculated and showed that the conjugate fraction in the mixtures increased with increasing concentration of peptide used for the polymerisation. Static light scattering (SLS) and viscometry showed the aggregation of the polymer/conjugate mixtures presumably due to the presence of peptide. The values from gel permeation chromatography (GPC), which were mostly attributed to the unconjugated polymers, were higher than those obtained from 1H NMR and centrifugation for the conjugates. The polymer/conjugate mixtures formed self-supporting gels where the critical gelation concentration decreased with increasing conjugate content. Oscillatory rheology experiments confirmed gels had formed and revealed that their elastic modulus, G' varied from ~ 10 to 400 Pa depending on the sample. TEM and AFM studies proved the formation of β-sheet fibres of ~ 4.5 ± 1.5 nm in diameter. The PNIPAAm-rich hydrogels were also characterised by micro DSC to reveal their thermo-responsiveness and phase separation and showed the LCST at ~ 30°C. The results of the study showed that varying the peptide sequence did not have an effect on thermal, mechanical or morphological properties of the hydrogels. By exploiting the self-assembly of the ionic-complementary peptides, it was possible to create PNIPAAm-rich, thermo-responsive hydrogels with controllable properties.Further in the study pure PNIPAAm-FEFEFKFK conjugate was incorporated into the FEFEFKFK peptide matrix to create peptide-rich thermo-responsive composite gels. Two series of the composite gels were prepared by varying separately the peptide matrix and polymer-peptide conjugate concentration. Micro DSC measurements revealed an endothermic peak at ~ 30ºC characteristic of the LCST of PNIPAAm. Oscillatory rheology studies showed that the composite gels became stronger with increasing conjugate concentration (G' ~ 20 - 200 Pa). Network morphology was studied by SANS. Using contrast variation and contrast matching techniques it was possible to distinguish between the peptide fibres and the PNIPAAm chains. Below and above the LCST the scattering curves showed a q-1 behaviour which is typical of rod-like objects. TEM and AFM also proved the formation of fibres of ~4.0 ± 0.8 nm and ~4.5 ± 1 nm respectively. AFM studies showed that the fibres of the composite gels were decorated with polymer chains. The thermo-responsiveness and the gelation properties of these conjugate-based scaffolds have potential for use as drug delivery vehicles or tissue engineering scaffolds.
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LAURANO, ROSSELLA. "Stimuli-responsive poly(ether urethane) hydrogels for the design of smart patient-specific patches in skin wound treatment." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2839841.

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Books on the topic "Stimuli-responsive hydrogel"

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Chattopadhyay, Dipankar, Jonathan Tersur Orasugh, and Anjan Adhikari. Stimuli-Responsive Hydrogels for Ophthalmic Drug Delivery. Elsevier Science & Technology, 2023.

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Radiation Synthesis of Stimuli-Responsive Membranes, Hydrogels and Adsorbents for Separation Purposes: Final Report of a Coordinated Research Project (IAEA Tecdoc Series). International Atomic Energy Agency, 2005.

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Book chapters on the topic "Stimuli-responsive hydrogel"

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Li, Hua. "Multi-Effect-Coupling pH-Electric-Stimuli (MECpHe) Model for Smart Hydrogel Responsive to pH-Electric Coupled Stimuli." In Smart Hydrogel Modelling, 173–218. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02368-2_4.

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Li, Hua. "Novel Models for Smart Hydrogel Responsive to Other Stimuli: Glucose Concentration and Ionic Strength." In Smart Hydrogel Modelling, 295–333. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02368-2_6.

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Wang, Bo, and Ji-Heung Kim. "Various Functional and Stimuli-Responsive Hydrogel Based on Polyaspartamides." In Gels Horizons: From Science to Smart Materials, 409–34. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6077-9_15.

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Anirudhan, T. S., P. L. Divya, and J. Nima. "Hydrogel-Based Stimuli-Responsive Functionalized Graft Copolymers for the Controlled Delivery of 5-Fluorouracil, an Anticancer Drug." In Gels Horizons: From Science to Smart Materials, 175–95. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6077-9_7.

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Asoh, Taka-Aki, Masatoshi Kato, Yasuyuki Tsuboi, and Akihiko Kikuchi. "Stimuli-Responsive Adhesion for 3D Fabrication of Hydrogels." In Stimuli-Responsive Interfaces, 255–67. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2463-4_14.

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Kawamura, Akifumi, and Takashi Miyata. "Biologically Stimuli-Responsive Hydrogels." In Intelligent Stimuli-Responsive Materials, 335–62. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118680469.ch10.

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Miao, Lei, Min Zhang, Yuanyuan Tu, Shudong Lin, and Jiwen Hu. "Stimuli-Responsive Cellulose Based Hydrogels." In Polymers and Polymeric Composites: A Reference Series, 1–40. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76573-0_12-1.

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Miao, Lei, Min Zhang, Yuanyuan Tu, Shudong Lin, and Jiwen Hu. "Stimuli-Responsive Cellulose-Based Hydrogels." In Polymers and Polymeric Composites: A Reference Series, 269–308. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-77830-3_12.

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Chopra, Lalita, Manikanika, and Jasgurpreet Singh Chohan. "Stimuli Responsive Bio-Based Hydrogels." In Additive Manufacturing of Polymers for Tissue Engineering, 79–99. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003266464-5.

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Sepulveda, Anderson Ferreira, Roger Borges, Juliana Marchi, and Daniele Ribeiro de Araujo. "Biomedical Applications of Stimuli-Responsive Hydrogels." In Nanotechnology in the Life Sciences, 1–20. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39246-8_1.

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Conference papers on the topic "Stimuli-responsive hydrogel"

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Naficy, Sina, Geoffrey M. Spinks, and Gordon G. Wallace. "Stimuli-responsive hydrogel actuators (presentation video)." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Yoseph Bar-Cohen. SPIE, 2014. http://dx.doi.org/10.1117/12.2046154.

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Yoshida, Koki, Shunsuke Nakajima, Ryuji Kawano, and Hiroaki Onoe. "Stimuli-responsive hydrogel microsprings for multiple and complex actuation." In 2017 IEEE 30th International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2017. http://dx.doi.org/10.1109/memsys.2017.7863538.

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Kondo, Go, Tatsuya Oda, Atsushi Suzuki, Michio Tokuyama, Irwin Oppenheim, and Hideya Nishiyama. "Water Flow through a Stimuli-Responsive Hydrogel under Mechanical Constraint." In COMPLEX SYSTEMS: 5th International Workshop on Complex Systems. AIP, 2008. http://dx.doi.org/10.1063/1.2897837.

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4

Tsuchiya, Mio, Yuta Kurashina, and Hiroaki Onoe. "Stimuli-Responsive Structural Color Hydrogel Microbeads for Wearable Biometric Sensors." In 2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII). IEEE, 2019. http://dx.doi.org/10.1109/transducers.2019.8808258.

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Chervinskii, Semyon, Ibrahim Issah, Markus Lahikainen, Alireza R. Rashed, Kim Kuntze, Arri Priimagi, and Humeyra Caglayan. "Humidity- and Temperature- Stimuli-Responsive Tunable Metal-Hydrogel-Metal Reflective Filter." In CLEO: QELS_Fundamental Science. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_qels.2022.fth5b.6.

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Our work demonstrates a tunable reflectance filter based on a metal-hydrogel-metal structure responsive to humidity and temperature. The filter employs a hydrogel as an insulating layer. Swelling/deswelling and the volume phase transition of the hydrogel allow continuous reversible humidity- and/or temperature-induced tuning of the optical resonance.
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Marschner, Uwe, Anthony Beck, Philipp Mehner, Georgi Paschew, Andreas Voigt, and Andreas Richter. "Analogies Between Stimuli-Responsive (Smart) Hydrogel-Based Microfluidic Valves and Electronic Transistors." In ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/smasis2022-91225.

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Abstract Stimuli-sensitive or responsive (smart) hydrogels, or chemofluidic transistors, are the base of the key control elements of smart chemomechanical valves. These valves have an outstanding potential for miniaturized, integrated sensor and actuator systems in many application areas and especially for lab-on-chip technology. Due to the multifaceted design parameters the design and realization of hydrogel-based systems are exceptionally complex and demanding. In this work we compare two types of stimuli-sensitive hydrogel-based valves with two types of electronic transistors and analyze analogies. As a result, the membrane isolated chemical volume phase transition Transistors (MIS-CVPT’s) exhibit a behavior with various analogies to electrical Field Effect Transistors (FET’s). The FET device embodies a voltage-controlled channel resistor, which is related to the chemically controlled fluidic channel of the MIS-CVPT. Chemical volume phase transition transistors (CVPT’s) on the other hand show in part similarities both to the bipolar transistor (BJT) and the MOSFET. The analogies allow a closed description of a microfluidic system by equivalent circuits and an efficient behavioral simulation by sophisticated circuit simulators. Several chemofluidic circuits, as a microfluidic oscillator, a NAND gate and an Analog/Digital Converter (ADC) and their behavioral simulation will be presented. The applied lab-on-a-chip (LoC) predictive simulation-based design concept is very helpful as it saves many practical experiments and leads to optimized components.
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Takeuchi, Nobuki, Shunsuke Nakajima, Ryuji Kawano, Yutaka Hori, and Hiroaki Onoe. "Locally Bendable Stimuli-Responsive Hydrogel Actuator with Axially Patterned Functional Materials." In 2020 IEEE 33rd International Conference on Micro Electro Mechanical Systems (MEMS). IEEE, 2020. http://dx.doi.org/10.1109/mems46641.2020.9056321.

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Ueno, Ryohei, Shota Yamawaki, and Hiroaki Onoe. "Stimuli-Responsive Structural-Color Hydrogel Chemical Sensor Microarray with Separated Functional Structures." In 2021 21st International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers). IEEE, 2021. http://dx.doi.org/10.1109/transducers50396.2021.9495691.

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Yoshida, Koki, Shunsuke Nakajima, Ryuji Kawano, and Hiroaki Onoe. "Spring-shaped stimuli-responsive hydrogel actuator for magnifying compression and expansion motions." In 2018 IEEE Micro Electro Mechanical Systems (MEMS). IEEE, 2018. http://dx.doi.org/10.1109/memsys.2018.8346619.

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Mieting, Alice, Sitao Wang, Mia Schliephake, Daniela Franke, Margarita Guenther, Stefan Odenbach, and Gerald Gerlach. "Precipitation of Iron Oxide in Hydrogel with Superparamagnetic and Stimuli-Responsive Properties." In CSAC2021. Basel Switzerland: MDPI, 2021. http://dx.doi.org/10.3390/chemproc2021005049.

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