A5064480820- Polymer crystallization and properties
- Polymer Nanocomposites and Properties
- Mechanical Behavior of Composites
- Elasticity and Material Modeling
- biodegradable polymer synthesis and properties
- Force Microscopy Techniques and Applications
- Rheology and Fluid Dynamics Studies
- Natural Fiber Reinforced Composites
- Polymer composites and self-healing
- Structural Analysis of Composite Materials
- Fiber-reinforced polymer composites
- Additive Manufacturing and 3D Printing Technologies
- Fatigue and fracture mechanics
- Polymer Surface Interaction Studies
- Renaissance and Early Modern Studies
- Polymer Nanocomposite Synthesis and Irradiation
- Historical and Literary Analyses
- Structural Behavior of Reinforced Concrete
- Epoxy Resin Curing Processes
- Fuel Cells and Related Materials
- Tribology and Wear Analysis
- Block Copolymer Self-Assembly
- Material Dynamics and Properties
- Adhesion, Friction, and Surface Interactions
- Textile materials and evaluations
Leibniz Institute of Polymer Research
2016-2025
Universitätsklinik für Chirurgie Wien
2024
Medical University of Vienna
2023-2024
Institut für Polymerwerkstoffe
2021-2023
Leibniz Institute for Neurobiology
2006-2015
Leibniz Association
2008-2012
University of Duisburg-Essen
2008
Friedrich Schiller University Jena
2008
University of Tennessee at Knoxville
2008
Friedrich-Alexander-Universität Erlangen-Nürnberg
2002-2004
The time-dependence of strain-induced crystallization in cross-linked natural rubber was studied using synchrotron wide-angle X-ray diffraction (WAXD) with an unprecedented time resolution the ms range. In-situ dynamic mechanical tests and tensile impact were carried out. In tests, consisting a strain step within less than 10 ms, it found that roughly half process complete 5 provided is large enough. Afterward, proceeded on scale few seconds. This implies under loading at frequencies which...
Surface force studies on polystyrene–poly(2-vinylpyridine) (1 : 1) mixed polymer brushes and corresponding monobrushes were carried out in dried state under a controlled environment. The aim was to explore possibilities control adhesion friction between inorganic or polymeric surfaces by use of brushes. effect switching chemical composition binary brush (on treatment with suitable solvents) wettability, surface roughness, hence the properties determined. Atomic microscopy (AFM) silicon tips,...
In times of climate change and resource scarcity, researchers are aiming to find sustainable alternatives synthetic polymers for the fabrication biodegradable, eco-friendly, and, at same time, high-performance materials. Nanocomposites have ability combine several favorable properties different materials in a single device. Here, we evaluate suitability two kinds inks containing silver nanowires fast, facile, industrial-relevant types cellulose-based nanowire electrodes via layer-by-layer...
The lamellae deformation and cavitation behavior of annealed isotactic polypropylene during uniaxial stretching are comprehensively investigated by in situ synchrotron small-angle X-ray scattering wide-angle scattering. We reveal how occurs the time scales elastic deformation, intralamellar slip, melting–recrystallization, separated three critical strains which only rarely influenced annealing. Strain I (0.1) marks end onset beyond crystallinity decreases gradually. II (0.45) signifies start...
Abstract Real time synchrotron Small‐Angle and Wide‐Angle X‐ray Scattering was performed during the tensile deformation of a high‐density polyethylene copolymer. The changes structure in crystalline amorphous domains were followed three characteristic stages load‐displacement curves: elastic stage plastic range composed lowering load force‐displacement‐curve (yielding) strain hardening. Competitive phenomena like crystallite fragmentation cavitation found to occur simultaneously phase but at...
Morphology and deformation mechanisms tensile properties of tetrafunctional multigraft (MG) polystrene-g-polyisoprene (PS-g-PI) copolymers were investigated dependent on PS volume fraction number branch points. The combination various methods such as TEM, real time synchrotron SAXS, rheo-optical FTIR, tests provides comprehensive information at different dimension levels. TEM SAXS studies revealed that the points has no obvious influence microphase-separated morphology tetrafunction MG with...
Abstract In Anlehnung an eine phänomenologische thermokinetische Fluktuationstheorie des Glasübergans wird ein Ansatz zur Beschreibung Einfriervorgangs und von Nachwirkungserscheinungen im Rahmen der linearen Reaktion vorgestellt. Anhand Auswertung Thermogrammen \documentclass{article}\pagestyle{empty}\begin{document}$ (\dot Q(T)) $\end{document} die Bestimmung notwendigen Parameter diskutiert. Diese geben Auskunft über den Umfang kooperativen Bewegung beim Einfriervorgang. für vier...
Abstract The mechanical behavior of polymer materials is strongly dependent on structure and morphology the material. latter determined mainly by processing thermal history. Temperature‐dependent on‐line X‐ray scattering during deformation enables investigation processes, fatigue failure polymers. As an example, investigations polypropylene are presented. By with synchrotron radiation, a time resolution in order seconds spatial microns can be achieved. characterization crystalline amorphous...