Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 34 for “"thermo-responsive"”.
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Synthesis and characterization of thermo-responsive polyethers
… have gained much interests due to their thermo-responsive properties. Thermo-responsive random copolymers of glycidyl methyl ether (GME) and epoxyhexane (EH) were synthesized. Once their properties were studied, they were grafted onto hyaluronic acid to obtain gelation at temperatures …
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New hydrogel forming thermo-responsive block copolymers of increasing structural complexity
… the synthesis and characterization of stimuli-responsive polymers made by reversible addition-fragmentation chain transfer (RAFT) polymerization and the investigation of their self-assembly into “smart” hydrogels. In particular the hydrogels were designed to swell at low temperature and could …
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Thermo-responsive and electroconductive shape-memory polymer composites for useful applications
Shape-memory polymers (SMPs) are stimuli-responsive materials with the ability to undergo a large recoverable deformation upon the application of an external stimulus. International research interest into the shape-memory effects (SMEs) of these polymers is rapidly growing. Unique polymer …
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Thermo-responsive Graft Copolymers based on Poly(Methyl Vinyl Ether): from Synthesis to Evaluation
Recently, stimuli-responsive polymer systems have been extensively investigated because of their wide range of potential applications in medicine, biotechnology, ecology and pharmacology. The most important stimulus in these studies is temperature. Thermo-responsive polymers are hydrophilic and …
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The development and evaluation of multifunctional silver iron-oxide hybrid nanoparticles towards enhanced pancreatic cancer therapy
… hybrid nanoparticles (AgHNPs) are presented as a thermo-responsive drug delivery system to improve pancreatic cancer therapy by reducing harsh systemic side effects of chemotherapy drugs and overcoming chemoresistance by the tumour environment and intratumoural bacteria, increasing drug …
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Development of Forward Osmosis Based Separations: A Novel Approach in Membrane Technology
… material as well as developed a novel thermo-responsive process with economic regeneration of the draw solution. The surface charge and fouling adsorption mechanism have been tuned by introducing Polyethylenimine (PEI) on the membrane. Zwitterionic monomer, AEPPS was used to introduce …
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Synthetic Degradable Polymer Systems for Drug Delivery
… the joint. Chapter 2 describes the study of a thermo-responsive injectable hydrogel for the controlled release of GSK3787, a potential disease-modifying therapeutic for OA. The hydrogel was prepared from methacrylate-capped poly(caprolactone-co-lactide)- poly(ethylene …
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Self-assembled bionanoparticle polymer conjugates for building soft composite membranes
… was chosen as a model protein scaffold to graft thermoresponsive polymers as Poly(N-isopropylacrylamide)(PNIPAAm) to it using the grafting from approach. PNIPAAm is a well known thermo-responsive polymer exhibiting a LCST of 32±C. After developing the well controlled atom transfer radical …
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Self assembled transmembrane protein polymer conjugates for the generation of nano thin membranes and micro compartments
… was focused on generating ultra thin stimuli responsive membranes with an embedded transmembrane protein to act as the pore. The membranes were formed by crosslinking of transmembrane protein polymer conjugates. The conjugates were self assembled on air water interface and the polymer chains …
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Epicutaneous Delivery of Allergens Using Dual Stimuli-Responsive Liposomes-Loaded Dissolving Microneedles
… were studied. Peanut allergen-loaded thermo- and phospholipase (sPLA)-responsive liposomes were synthesised using the thin-film hydration method, and dMNs encapsulating these liposomes were fabricated using micromoulding method. Liposomes’ structure post-fabrication was characterised …
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Advancing fast relaxation imaging to determine protein stability and folding kinetics on poly(n-isopropyl acrylamide) films
Several studies have reported the use of the thermo-responsive polymer PNIPAM to capture and release cells or proteins for medical purposes; however, this assumes that PNIPAM does not perturb the stability of biomolecules. Previous analytical and spectroscopic techniques have not been able to …
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A multi-frequency induction heating system for a thermally triggered gel polymer dynamic vibration absorber
… its natural frequency, by using a collection of thermo-responsive gel polymers. This thesis develops an induction heating system that is suitable for noncontact heating of these gel polymers. The proposed heating system addresses the more general problem of controllable power delivery to multiple …
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Entwicklung neuer farbstoffmarkierter Polymere zur Visualisierung des LCST-Phasenübergangs in wässriger Lösung
… in wässriger Lösung ("thermo-responsive Polymere") zeigen und diesen in ein optisches Signal übersetzen können. Solche Polymere unterliegen innerhalb eines kleinen Temperaturintervalls einer massiven Änderung ihres Verhaltens, z B. ihrer Konformation und ihres …
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Microstructure and Mechanics of Poly(n-Isopropylacrylamide) Based Responsive Fluids
… thesis, the mechanics and microstructure of a thermo-responsive fluid based on a mixture of hard colloidal particles and temperature sensitive swellable poly(N-isopropylacrylamide) microgels has been studied. The strength and range of the colloidal interparticle interactions are manipulated by …
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Synthesis and characterization of tethered poly(n-isopropylacrylamide) for quantitative cell adhesion studies
Environmentally responsive (or smart') polymers represent a new approach for controlling biofouling release. Poly(N-isopropylacrylamide) (PNIPAAm) is a thermo responsive polymer that can potentially be used to control biofouling, as it exhibits a change in its relative hydrophobicity above and …
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Untersuchungen PEG-basierter thermo-responsiver Polymeroberflächen zur Steuerung der Zelladhäsion
… vorliegenden Arbeit werden erstmals PEG-basierte thermo-responsive Oberflächen erfolgreich für die Zellkultur eingesetzt. Dabei wird das zerstörungsfreie Ablösen verschiedener Zelllinien von den Oberflächen durch Temperatursenkung realisiert. Die Funktionalität der Oberflächen wird durch Variation …
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Janus Particles at Interfaces
… was the synthesis of functional and/or stimuli-responsive hybrid core-shell-corona Janus particles based on inorganic colloids and the characterization of their unique properties and fascinating self-assembly behavior. The first step towards these Janus particles was to understand in detail the …
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Desenvolvimento de sistemas terapêuticos para leishmaniose cutânea
… correlated with these production parameters and thermodynamic parameters. The data indicated that the drug release was an endothermic and non-spontaneous process, with the fibers and films appropriately fitting to Peppas – Sahlin and Higuchi’s model, respectively. Among the systems evaluated, PVA …
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Metal-polymer nanoparticulate systems for externally-controlled delivery
… consisting of gold nanorods and temperature-responsive hydrogel nanoparticulates were investigated for use in externally-controlled drug delivery systems. Several different thermo-responsive hydrogels including poly(N-isopropyl acrylamide) (PNIPAAm) and poly(N-isopropryl acrylamide-co-acrylic …
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Step-growth hydrogels crosslinked through grafted polypeptides enable nano- to macroscale synthetic extracellular matrix design
… groups, with broad application in pH- and thermo-responsive drug delivery. Extending these solution-phase studies to gel systems, foundational characterizations first establish a modular, well-controlled synthetic platform for synthesizing crosslinker-grafted PPLG, easily extended to a wide …
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