Dokumente Fakultät für Chemie (inkl. GAUSS) nach Gutachter "Vana, Philipp Prof. Dr."
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Herstellung und Charakterisierung von Polymernetzwerken im Kontext der präparativen Membranchromatographie
(2022-03-04)Preparative chromatography is an essential part in the industrial purification of biopharmaceuticals and thus allows the targeted therapy of severe diseases like cancer, multiple sclerosis or rheumatism. It enables the ... -
High-Precision Particle Arrangement in Gold‒Polymer-Nanocomposites using RAFT Polymerization
(2016-11-17)This thesis provides a comprehensive analysis of the scientific background on nanocomposites generated via reversible-deactivation radical polymerization (RDRP) techniques. Starting from this basis, nanocomposites with the ... -
Hitzeinduzierte Radikalbildung während der thermischen Holzmodifizierung
(2020-03-10)In this thesis the hardwood and the softwood were thermally modified to investigate the effect of heat on the chemical structure of the wood and the heat induced radical formation during wood modification. Different ... -
Investigation of Polymer-Filler Interactions Using Functionalized Nanoparticles
(2020-03-16)Silica and carbon black (CB) particles were successfully functionalized by exploiting the characteristic features of the reversible addition--fragmentation chain transfer (RAFT) polymerization. This enabled both the ... -
Investigation of the Kinetics and Mechanism of RAFT Polymerization via EPR Spectroscopy
(2013-02-12)This thesis provides new insights into the mechanism and kinetics of reversible addition-fragmentation chain transfer (RAFT) polymerizations. Electron paramagnetic resonance (EPR) spectroscopy experiments to determine the ... -
Investigations into the Propagation and Termination Kinetics of the Radical Polymerization of Polar Monomers in Aqueous Solution
(2013-05-27)Propagation and termination rate coefficients of radical polymerizations in aqueous solution were determined from pulsed-laser induced polymerizations and chemically initiated polymerizations. Pulsed-laser induced ... -
Ion mobility mass spectrometry as a powerful tool to analyze complex macromolecular systems
(2021-02-01)Modern applications of polymers rely on intricately tailored macromolecules exhibiting very specific properties and therefore require extensive analysis. In this context, IMMS is an immensely powerful technique since it ... -
Kinetics and Mechanism of Cu-Catalyzed Atom Transfer Radical Polymerization
(2015-10-28)The kinetics and mechanism of Cu-mediated atom transfer radical polymerization (ATRP) were investigated with particular emphasis on the ATRP deactivation rate coefficient, k_deact . The method of pulsed laser polymerization ... -
Kinetics and Modeling of the Radical Polymerization of Acrylic Acid and of Methacrylic Acid in Aqueous Solution
(2014-01-15)The radical polymerization of methacrylic acid, acrylic acid and acrylamide in aqueous solution has been investigated. Detailed kinetic models for both acrylic acid, AA, and methacrylic acid, MAA, have been developed ... -
Kinetics of free radical homo- and copolymerisations investigated with pulsed laser methods
(2024-03-06)Free-radical polymerisation is the most important polymerisation process due to its simplicity and robustness. It is therefore necessary to understand the kinetics of the involved reactions in order to plan a polymerisation, ... -
Kinetik der konventionellen radikalischen und der RAFT-Polymerisation an Nanopartikeloberflächen
(2016-07-22)This thesis provides new insights into the kinetic and mechanistic aspects of the con-ventional radical and the reversible addition–fragmentation chain transfer (RAFT) polymerization from the surface of silica nanopartic ... -
Kinetik radikalischer Polymerisationen ionischer Monomere in wässriger Lösung: Spektroskopische Analyse und Modellierung
(2016-07-20)This work targets the radical polymerization of ionic monomers in aqueous solution. Rate coefficients were determined by pulse-laser polymerization in conjunction with size-exclusion chromatography (PLP–SEC), with near-infrared ... -
Kinetik von Atom-Transfer Radikalischen Polymerisationen bis zu hohen Drücken
(2012-11-02)Atom-transfer radical polymerization (ATRP) has been studied up to 2500 bar via online VIS/NIR-spectroscopy to monitor the evolution of both CuII concentration and monomer conversion. ATRP-equilibrium constants have been ... -
Low-Voltage Electrowetting on Dielectrics Integrated and Investigated with Electrical Impedance Spectroscopy (LV-EWOD-EIS)
(2018-10-18)Electrowetting on dielectrics (EWOD) is an electrically controllable wetting effect, that has been applied in diverse fields including optics, displays and lab on a chip systems. However, the further development of EWOD ... -
Matrix gestützte Polymernetzwerke für die Anwendung in der konvektiven präparativen Chromatographie
(2019-01-11)Due to developments in the production of biopharmaceuticals and the increasing demand, due to increased application areas, especially for the use of monoclonal antibodies (mAb's), the downstream of these products have ... -
Mechanism and Kinetics of Catalyzed Chain Growth
(2015-02-05)In this work, the activation and polymerization mechanism of Catalyzed Chain Growth (CCG) polymerization of ethylene and styrene was studied. On the basis of two metallocene catalysts (Cp*2ZrCl2 and Cp*2NdCl2Li(OEt2)2) and ... -
Metal-Catalyzed Radical Polymerization up to High Pressure
(2015-09-28)The mechanism and kinetics of metal-catalyzed radical polymerization were investigated by spectroscopic means. A particular focus was set on Fe-mediated atom-transfer radical polymerization (ATRP) as there is a growing ... -
Mikrophasenseparation von photo-vernetzbaren Blockcopolymeren in dünnen Filmen
(2015-03-23)The micro-phase behavior of diblock copolymers with integrated UV-crosslinkable units has been investigated by atomic force microscopy (AFM) as well as their mechanical properties. Further, the influence of crosslinkers ... -
Modification of Wood Surfaces via controlled Polymerization Methods
(2018-10-08)The present study was conducted to explore the possibilities of wood modification by reversible-deactivation radical polymerization (RDRP) techniques in order to tailor surface properties. Surface-initiated reversible ... -
Nano-Carrier Synthesis via Z-RAFT Star Polymerisation
(2012-11-21)In this project the establishment of nano-scaled and monomolecular objects working as carrier system was investigated. Such nano-carriers find application in drug delivery, catalysis or as templates for hybrid nanomaterials. ...