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 117 for “"poly(2"”.
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Poly(2-alkyl-2-oxazoline) containing multiphase systems
This research is focused on the polymerization of 2-alkyl-2-oxazoline homopolymers and 2-alkyl-2-oxazoline containing copolymers with well-defined structures. In addition, the potential of selected materials as polymer blend compatibilizers was briefly evaluated. The polymerization of …
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Size Exclusion Chromatography of Poly(2-ethyl-2-oxazoline) Homopolymers and Poly(ethylene oxide)-b-Poly(2-ethyl-2-oxazoline) Copolymers
… weights and molecular weight distributions of polymers. An important advancement in SEC is multidetection SEC which includes multi-angle laser light scattering, viscometry, refractive index and UV spectroscopy to analyze block and graft copolymers as well as polymers with oligomeric molecular …
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Funktionalisierte Poly(2-oxazoline) : kontrollierte Synthese, bioinspirierte Strukturbildung und Anwendungen
Funktionalisierte Poly(2-oxazoline) als neue Materialien stellen sowohl unter strukturellen Gesichtspunkten als auch im Hinblick auf potentielle Anwendungen eine interessante Polymerklasse dar. Die Ausbildung von hierarchischen Strukturen mit Poly(2-oxazolinen) über intermolekulare …
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Characterization of poly(2-ethyl-2-oxazoline) polymer with soft ionization
In my work, PEtOx-800 polymer with both water and methanol end groups was studied by soft ionization. The poly(2-ethyl-2-oxazoline) is an important water-soluble and heat sensitive polymer. The PEtOx has found many commercial applications and has a good potential in pharmaceutical industry.
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Friction, wear and lubrication of a poly(2-hydroxyethyl methacrylate) hydrogel
Poly(2-hydroxyethyl) methacrylate, (polyHEMA), hydrogels are synthesized for tribological study to investigate their potential for use as synthetic articular cartilage. A four factor, two level designed experiment was performed to evaluate friction and wear of polyHEMA. Tests were carried out using …
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Exploring poly (2, 5) benzimidazole enhanced with carbon nanotubes for space applications
This work explores using polymeric materials for space radiation shielding in low-earth orbit. Shielding against radiation is essential on any space mission. Low atomic number materials, such as hydrogen, have shown to be effective in shielding ionising radiation. However, compared to metallic …
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Engineering of poly(2-oxazoline)s for a potential use in biomedical applications
This PhD work is based on the design of poly(2-oxazoline) (POx) hydrogels and nanogels, by chemical or physical cross-linking, aimed to be used for biomedical applications. Nanogels were first prepared in dilute media and in inverse emulsion based on a statistical copolymer made of …
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Amphiphilic Poly(2-isopropyl-2-oxazoline)-block-poly(lactide) Nanoparticles as Drug Delivery Vehicles
… of the unique morphologies of water-soluble poly(2-isopropyl-2-oxazoline)-block-poly(DL-lactide) and poly(2-isopropyl-2-oxazoline)-block-poly(L-lactide) (PiPOx-b-PDLLA and PiPOx-b-PLLA) nanoparticles was obtained via Fluorescence Spectroscopy. Additionally, loading and release studies were …
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Synthesis and Characterization of Poly(2-Ethyl-2-Oxazoline) Functional Prepolymers and Block Copolymers
… the synthesis and characterization of functional poly(2-ethyl-2-oxazoline) (PEtOx) containing homo- and block copolymers that are potential materials for membrane-based water purification and gas separation, drug delivery, magnetic resonance imaging and tissue engineering applications. The …
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The development of novel hybrid poly (2-oxazoline)-based bioinks for 3D bioprinting: a comparative study with Pluronic F127
… and clinical transformation. Natural polymers, such as chitosan and alginate, are commonly used as bioinks due to their biocompatibility, biodegradability and similarity to extracellular matrix (ECM). These natural polymers are usually limited by their mechanical strength and have less …
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Investigation of Amorphous Solid Dispersions of Poorly Water-soluble Drugs in Poly (2-hydroxyethyl Methacrylate) Hydrogels for Enhanced Solubility and Controlled Release
… encountered with ASD based on water-soluble polymers (e.g., PVP, HPMCAS) under nonsink dissolution conditions. A subsequent study examines the effect of supersaturation generation rate on the resulting kinetic solubility profiles of amorphous pharmaceuticals and delineates the interplay …
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The Physical and Spectroscopic Study of a Series of Poly(3-hexyl thiophene) Homopolymers and Poly(3-hexyl thiophene)-block-Poly(2-hydroxyethyl methacrylate) Diblock Copolymers
In block-selective solvent, the rod-coil block copolymers can form various micellar structures. With block copolymers that contain a conjugated polymer block, the conformation of the conjugated polymer can be reflected by spectral changes in the solution. Therefore, it is of interest to study the …
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PIPOX-PEP : kontrollierte Synthese und Aggregationsverhalten von Blockcopolymeren mit schaltbarer Hydrophilie
Es wurden Poly(2-isopropyl-2-oxazolin)-Makroinitiatoren mit terminaler Ammoniumtrifluoracetat-Endgruppe synthetisiert, die anschließend für die Ammonium vermittelte NCA Polymerisation in NMP eingesetzt wurden. Die hierbei synthetisierten Poly(2-isopropyl-2-oxazolin)-block-poly(L-glutamat) …
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Synthesis of pH-responsive core-shell nanoparticles of different sizes and with different shell compositions
The endosome-disrupting and pH-responsive poly(2-diethylamino ethyl methacrylate)-core/poly(2- aminoethyl methacrylate)-shell nanoparticles could potentially increase the efficacy of transcutaneous administered vaccines and facilitate the cytosolic delivery of a wide variety of therapeutic …
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Novel Functional Membrane Precursors based on Triblock Terpolymer Thin Films
… Vorstufen für Dünnfilm-Membranen auf Basis von Polybutadien-block-poly(2-vinylpyridin)-block-poly(tert-butylmethacrylat) (BVT) Dreiblockterpolymeren identifiziert. Durch geschickte Kombination des gummiartigen Polybutadiens (PB), des pH-responsiven und mit Metallen beladbaren …
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Synthesis and Functionalization of Poly(ethylene oxide-b-ethyloxazoline) Diblock Copolymers with Phosphonate Ions
Poly(ethylene oxide) (PEO) and poly(2-ethyl-2-oxazoline) (PEOX) are biocompatible polymers that act as hydrophilic "stealth" drug carriers. As block copolymers, the PEOX group offers a wider variety of functionalization. The goal of this project was to synthesize a poly(ethylene …
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Electrically Conductive Low Dimensional Nanostructures: Synthesis, Characterisation and Application
… of various nanoobjects including single polymer molecules and carbon nanotubes constitutes a very promising alternative for fabrication of ultimately small devices. Carbon nanotubes are attractive materials for nanotechnology and hold much promise to revolutionize fundamental science in a …
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Development and In-Vitro Evaluation of Long Circulating Liposomes for Targeted Delivery of Gemcitabine and Irinotecan in Pancreatic Ductal Adenocarcinoma
… prime candidate. While surface modification with polyethylene glycol (PEG) conjugates remains the most commonly used technique to develop long circulating liposomes, its shortcomings including but not limited to anaphylatoxin production, platelet activation, immunogenicity, express a need for a …
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