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Showing 1 to 20 of 69 for “"ATRP"”.
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Surface initiated ATRP of substituted styrenes and functional monomers on flat surfaces
Thesis (Ph. D.)--Michigan State University. Chemistry, 2010
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Development of new dendritic ligands for copper mediated Atom Transfer Radical Polymerization (ATRP) of methyl methacrylate
… 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 aldehydes such as 2-pyridinecarboxyaldhyde …
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Thermally responsive polymers and their applications
… 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 provide tri-block copolymers with …
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Branched Glycopolymers
… 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 1H NMR, GPC/viscosity and MALDI-TOF …
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Methoden zur Synthese von definierten bioorganisch-synthetischen Blockcopolymeren
… von Oligopeptid-Makroinitiatoren für die ATRP-Polymerisation durchgeführt. Es konnte gezeigt werden, dass in geeigneten polaren Lösungsmitteln (DMSO, DMF) eine Polymerisation mit dem ATRP-Oligopeptid-Makroinitiator erfolgreich ist. Allerdings treten während der Polymerisation …
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Neue fluorhaltige und fluorophile Katalysatoren für die lebende Olefinpolymerisation, die radikalische Atomtransferpolymerisation und die Synthese von Blockcopolymeren
… der radikalischen Atomtransferpolymerisation (ATRP) bewirken schwer abtrennbare Übergangsmetallrückstände Polymerabbau durch Redoxreaktionen verbunden mit Verfärbung. Mit einem neuen fluorigen Biphasen-Katalysatorsystem gelang effizientes Katalysatorrecycling ohne Aktivitätseinbußen nach drei …
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Controlled Radical Polymerization: Towards Industrially Relevant Conditions
… atom transfer radical polymerization (ARGET ATRP), or the mediating agent can be incorporated into the polymer as in nitroxide-mediated polymerization (NMP), where no post polymerization processing is required other than removal of residual monomer. This thesis presents a study of these two …
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Synthesis and controlled radical polymerization of multifunctional monomers
… with alkoxyamine terminated polystyrene. The ATRP of multifunctional acrylates and methacrylates has been successfully performed, as well as the block copolymerization of multifunctional acrylates and methacrylates. Relatively low polydispersities of the corresponding polymers (PD=1.18-1.36) …
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Development of Core-Shell Polymeric Nanostructures for Delivery of Diagnostic and Chemotherapeutic Agents
… 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 yield. These special initiators were …
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Magnetic adsorbents displaying switchable ion-exchange behaviour
… - including Ce(IV) initiation, surface ATRP and sulfonyl activation – were used to graft ion-exchanging polyelectrolyte surfaces on low cost non-porous polyvinyl alcohol-magnetite supports. Grafting of poly(2-vinyl pyridine) and poly(methacrylic acid) was fully characterised using solid …
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Functional Cylindrical Polymer Brushes and Their Hybrids with Inorganic Nanoparticles
… polymerization (DPn=1500), esterified with an ATRP initiator, and subsequently the side-chains were grafted by atom transfer radical polymerizations (ATRP). Cylindrical brushes with different architectures, such as brushes of single component, double-grafted brushes and core-shell brushes, were …
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Synthesis and characterization of stimuli-responsive microgels based on poly(glycidol)block copolymers
New water soluble, attainable to ATRP polymerization Cl-terminated poly(glycidol) macroinitiators were prepared by modification of (Omega)-hydroxyl group of poly(glycidol acetal) using 2-chloropropionyl chloride fallowed by selective acidic deprotection of acetal groups. The obtained …
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Synthesis and characterization of polymacromonomers based on polyethers
… and controlled free radical polymerisation (ATRP) were used for preparation of polymacromonomers with different properties. The radical polymerization of the macromonomers was carried out in water using AVA as initiator and in the mixture of water/benzene (10/1 v/v) using AIBN. Core-shell …
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Synthesis and characterization of tethered poly(n-isopropylacrylamide) for quantitative cell adhesion studies
… 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 mass spectroscopy, Fourier transform …
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Smart magnetic affinity adsorbents
… and Atom Transfer Polymerisation Reaction (ATRP). By identifying the optimum cerium (IV) reaction conditions, the said chemistry was further utilised to attach different polymers (thermoresponsive and affinity ligands) and their combination (thermo-affinity) at fixed positions onto M-PVA …
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Atom transfer radical polymerisation - towards the synthesis of a fully-functional photorefractive polymer
Atom transfer radical polymerisation (ATRP) of styrene in xylene solution initiated with 1-phenylethyl bromide and mediated by CuBr/N-propyl-2- pyridinemethanimine catalyst complex was studied. The polymerisation was ill-controlled, yielding polymers with broad molecular weight distributions and …
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Novel Routes for the Design of Poly((meth)acrylic acid) Containing Polymer Structures by Controlled Radical Polymerization
… polymerization techniques such as RAFT and ATRP were used to synthesize well-defined poly(1-ethoxyethyl(meth)acrylate) (PEE(M)A). This was demonstrated by kinetic data, control of molecular weight and the presence of a narrow molecular weight distribution. Additionally, working examples …
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Towards Early State Disease Detection in Microdevices: Fabrication and Testing of Micro Total Analysis Systems for Bioanalytical Applications
… 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 suited as microfluidic systems for high …
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Membrane Surface Engineering for Biochemical Applications
… 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 is also well applied for biofuel …
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