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.
Results
Showing 1 to 20 of 44 for “"responsive polymer"”.
-
Stimuli-responsive polymer nanotube arrays
… their bulk counterparts. However, the stimuli-responsiveness of nanotube arrays has seldom been explored, mostly due to the inertness of the materials typically utilized to create them. Here I introduce a new concept of designing and synthesizing surface-bound stimuli-responsive polymer …
-
Stimuli responsive polymer gels for sensing applications
… imparted on it by an IL. The IL simplified polymer gel is termed an optode within this chapter as (a) it is prepared the same manner as optodes, (b) the IL performs many of the same functions as previous materials used in optode design and (c) the analyte or ion movement between the aqueous …
-
Immobilization of Inorganic Nanoparticles on Responsive Polymer Brushes
Exploitation of well defined responsive polymer brushes for direct and controlled immobilization of metal/semiconductor nanoparticles on macroscopic surfaces has been demonstrated. The employed approach offers the possibility of the organization of a variety of inorganic nanoparticles by …
-
Development of Mesoporous Silicas, Responsive Polymer Microgels, and Related Nanocomposites
<p>This dissertation covers research on polymer-templated nanoporous materials and functional soft materials, and it consists of four major parts. The first part is on introduction. The next part (Chapters 2-3) describes the research work on the synthesis of silicas with spherical mesopores. …
-
REDOX-RESPONSIVE POLYMER DELIVERY SYSTEMS FOR ANTI-CANCER DRUG AND IMAGING
… of safe and efficient delivery systems, stimuli-responsive polymers which undergo significant physical or chemical properties change in response to environmental variations are becoming more important. Exploring the much more reductive environment in intracellular compartments compared to …
-
Dual-Responsive Polymer and Hybrid Systems: Applications for Gene Delivery and Hydrogels
… functional materials based on water-soluble and responsive polymers, in particular poly((2-dimethylamino)ethyl methacrylate) (PDMAEMA). The dual-responsive behavior and polycationic character at physiological pH of PDMAEMA lead to outstanding properties and thus, to a versatile component for …
-
Nanoscale Investigation of Adhesion, Friction, and Wear in Chemically Heterogeneous Responsive Polymer Brushes
Polymer brushes provide the responsive smart surfaces which can be used for fabrication of various devices. In this thesis work, adhesion, friction, and wear of polystyrene (PS) - poly(2-vinyl pyridine) (P2VP) and polystyrene - poly(acrylic acid) (PAA) binary brushes and corresponding monobrushes …
-
Stimuli-Responsive Polymer Systems that Respond to Redox Potential and pH for Controlled Drug Release
… composition. Furthermore, they have stimuli-responsive moieties that translate physiological signals, such as pH and redox potential, at the tumor microenvironment into nanocarrier behaviors, like swelling, degradation, morphological change, and charge reversal. Stimuli-responsive …
-
Synthesis of reactive and stimuli-responsive polymer thin films by initiated chemical vapor deposition and their sensor applications
Stimuli-responsive polymer thin films provide the ability to control the interaction of a surface with its environment. Synthetic techniques with fine compositional control are required to engineer specific responses to stimuli. Initiated chemical vapor deposition (iCVD) is a novel vacuum …
-
Direct Measurements of Polyelectrolyte Brush Responses using Atomic Force and Optical Microscopy
… of the response properties of these polymer surfaces. For that purpose new methods are developed which combine force spectroscopy and optical microscopy. As well, established physico-chemical techniques are used. Polymer brushes provide an excellent building block for responsive …
-
DEVELOPMENT OF IONIC POLYMER NANOBRUSHES WITH APPLICATION IN MALDI-MS
… is in the development and application of responsive polymer nanobrushes. Mainly, preparation of the polymer nanobrushes will center on the development of so called mixed polymer brushes composed of the ionic and neutral monomers. Such mixed polymer brushes have a range of applications and …
-
Bimetallic Main-Group Catalysts for the Synthesis of Advanced Biocompatible, Biodegradable, and Sustainable Polymers
… Among these, poly(lactic acid) (PLA) and its copolymers are especially notable for their biodegradability, sustainability, and tunable chemical and physical properties. This dissertation presents a systematic investigation into the synthesis of PLA and its copolymers with ε-caprolactone and …
-
Towards greener stationary phases : thermoresponsive and carbonaceous chromatographic supports
Polymers which are sensitive towards external physical, chemical and electrical stimuli are termed as ‘intelligent materials’ and are widely used in medical and engineering applications. Presently, polymers which can undergo a physical change when heat is applied at a certain temperature (cloud …
-
Development and Characterization of Reagent Pencils for Microfluidic Paper Based Analytical Devices
… on the molecular weight dependence, polymer chain end functionality, and polymer-graphite ratio was conducted to determine the most desirable parameters in reagent pencil composition. Further, the effects of enzyme stability in the presence of poly(ethylene glycol) (PEG) is …
-
Advancing fast relaxation imaging to determine protein stability and folding kinetics on poly(n-isopropyl acrylamide) films
… 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 confirm …
-
Designing Polymer Hydrogels for Extrusion-Based Additive Manufacturing
… technologies and materials chemistry are stimuli-responsive polymers, which change their chemical and physical properties in response to specific environmental cues. Stimuli-responsive polymer hydrogels, in particular, are seeing significant interest in extrusion-based AM for the fabrication of …
-
Echogenic Biomaterials for Medical Ultrasound Tracking
… the field of real-time ultrasound tracking of polymeric medical devices, through fabrication of ultrasound responsive polymer-glass composites. Optimal composition will be researched through three complimentary approaches. The first approach seeks to develop a polyurethane-glass microparticle …
-
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 …
-
Applications of ROMP Polymers
<p>Recently, a new type of stimuli-responsive polymer, named solvent programmable polymers (SPPs), was developed by ring-opening metathesis polymerization (ROMP) based on monomers containing recognition groups that display restricted rotation. We could modulate the binding properties of the SPPs by …
-
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 …
Page 1 of 3