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 58 for “"atom transfer radical polymerization"”.
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Reverse-selective gas-separation membranes prepared by atom transfer radical polymerization
… porous substrates via surface–initiated atom transfer radical polymerization (ATRP). PEO has an excellent CO<sub>2</sub> solubility, but crystallization of PEO chains leads to low CO<sub>2</sub> permeability and minimal CO<sub>2</sub>/H<sub>2</sub> selectivity. To prevent crystallization, …
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Development of new dendritic ligands for copper mediated Atom Transfer Radical Polymerization (ATRP) of methyl methacrylate
… been synthesized and used in copper mediated Atom Transfer Radical Polymerization (ATRP) of MMA. These ligands were derived from the commercially available Generation 1 polypropyleneimine dendrimer DAB-(NH2)4. The first set of ligands was synthesized by reacting DAB-(NH2)4 with aromatic …
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Composite cathodes for lithium rechargeable batteries
… with a domain periodicity of -35 nm made by atom transfer radical polymerization, and poly[(oxyethylene)9 methacrylate]-graft-poly(dimethyl siloxane) (POEM-g-PDMS) with a domain periodicity of-17 nm made by free radical polymerization. The resulting microphase-separated polymer is a structure …
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Molecular and Biofunctional Modification of Conformal POEGMA Bottlebrush Coatings and Applications Toward In Vitro Diagnostics
… grown from planar surfaces by surface-initiated atom transfer radical polymerization (SI-ATRP), and then undergo biofunctional modification with biorecognition elements to target specific analytes of interest. This strategy is used to assemble low-cost, “point of care” diagnostic tests which …
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Thermally responsive polymers and their applications
… In a route to synthesis of the block copolymers, atom transfer radical polymerization (ATRP) and nitroxide-mediated radical polymerization (NMRP) of NIPA were developed. Incorporation of ATRP or NMRP initiators to the polymer ends of PPEs and the following polymerizations of NIPA were expected to …
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Branched Glycopolymers
… (AIGlc), were synthesized via atom transfer radical polymerization (ATRP). Self-condensing vinyl copolymerization (SCVCP) via ATRP was employed for the synthesis of highly branched glycoacrylates. The successful synthesis of linear and branched glycoacrylates were confirmed by …
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Smart hybrid materials with tailored functions
… (PNIPAM) Bürsten wurden mittels "Atom transfer radical polymerization" (ATRP) synthetisiert; die Beladung mit AuNPs erfolgte durch einen Inkubationsprozess. Beide Polymere weisen eine untere kritische Mischungstemperatur (LCST) auf, oberhalb derer die Polymerketten reversibles …
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Synthesis and characterization of tethered poly(n-isopropylacrylamide) for quantitative cell adhesion studies
… relatively simple and rapid method which allows atom transfer radical polymerization (ATRP) in presence of air. In this study the structure, purity and thermally responsive behavior of grafted brushes have been characterized using X-ray photoelectron spectroscopy, time-of-flight secondary ion …
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Development of Mesoporous Silicas, Responsive Polymer Microgels, and Related Nanocomposites
… hollow silica nanospheres via surface-initiated atom transfer radical polymerization with activators regenerated by electron transfer (SI-ARGET ATRP), and the polymer loading was well controlled. Besides, the core-shell-structured nanocomposites were successfully fabricated in Chapter 8. …
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Towards Early State Disease Detection in Microdevices: Fabrication and Testing of Micro Total Analysis Systems for Bioanalytical Applications
… and poly(ethylene glycol) (PEG) grafting using atom transfer radical polymerization (ATRP) have been used in PMMA microdevices. Proteins, peptides and protein digests have been separated electrophoretically in these PMMA microchips. My results demonstrate that PMMA microdevices should be well …
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Membrane Surface Engineering for Biochemical Applications
… (PVCL), from the surface of the membrane by atom transfer radical polymerization (ATRP). The nanostructure can vary its conformation and hydrophobicity when the temperature changes. After modification, membrane is able to provide a very high recovery and yield. </p> <p>Membrane modification …
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Hydrogels for Biomacromolecule Immobilization and Sensing
… immobilization were investigated. Atom transfer radical polymerization was used to grow poly(N-isopropylacrylamide) polymer films from surfaces with varying initiator densities and polymer molecular weights. The lower critical solution temperature behavior for these films were …
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Stimuli-responsive self-assembling materials comprising amphiphilic copolymers for localized remotely triggered therapeutic delivery
… methacrylate with a spiropyran methacrylate by atom transfer radical polymerization for increased kinetic control. From there, we optimized the composition of this multiresponsive copolymer such that isomerization of the spiropyran moiety brought about a solubility transition surrounding 37°C. …
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Controlled Radical Polymerization: Towards Industrially Relevant Conditions
Reversible deactivation radical polymerization (RDRP), also known as controlled radical polymerization (CRP), has been a significant area of polymer research for more than 20 years, allowing the facile synthesis of complex macromolecules previously unattainable by conventional free radical …
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POLY(N-ISOPROPYL ACRYLAMIDE)-COATED SURFACES: INVESTIGATION OF CYTOTOXICITY WITH MAMMALIAN CELLS AND THE MECHANISM OF CELL DETACHMENT
… the (possibly) cytotoxic polymer would be transferred to implanted engineered tissues. In this work, we present an investigation of the cytotoxicity of pNIPAM-grafted surfaces, as well as an investigation of the mechanism of cell detachment from pNIPAM. The cytotoxicity of substrates …
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An evaluation and development of bonding technologies for rapid disassembly of automotive vehicles
… the issue of TEMs/adhesive compatibility, atom transfer radical polymerization (ATRP) with activators regenerated by electron transfer (ARGET) or ARGET ATRP technique was reviewed and employed to modify the TEMs surface. TEMs were grafted with poly(glycidyl methacrylate) (PGMA) chains which …
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CONTROLLED SYNTHESIS OF TOPOLOGICALLY TEMPLATED CATENANE AND KNOTTY POLYMER
… cyclization of linear analogue or ring-expansion polymerization from cyclic catalyst/initiator are also discussed. Chapter 2 demonstrates a novel route for the synthesis of polymer catenanes using supramolecularly templated Atom Transfer Radical Polymerization (ATRP) initiator for polymerization …
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Fabrication of Polymeric Microfluidic Devices for Protein Analysis
… substrates activated using an oxygen plasma. Atom-transfer radical polymerization was then performed to graft poly(ethylene glycol) (PEG) on the PMMA surface. PMMA micro capillary electrophoresis (µCE) devices made with the covalently modified surfaces exhibited substantially reduced …
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Development of Core-Shell Polymeric Nanostructures for Delivery of Diagnostic and Chemotherapeutic Agents
… vivo model of intracellular infectious diseases. Atom transfer radical polymerization (ATRP) was utilized to prepare well-defined polymeric dispersion stabilizers that readily adsorb onto metal oxide surfaces. Two unimolecular bis(phosphonate) ATRP initiators were designed and prepared in good …
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