A5028936315- Block Copolymer Self-Assembly
- Advanced Polymer Synthesis and Characterization
- Membrane Separation and Gas Transport
- Polymer Nanocomposites and Properties
- Polymer crystallization and properties
- Membrane Separation Technologies
- Polymer Surface Interaction Studies
- Synthesis and properties of polymers
- biodegradable polymer synthesis and properties
- Polymer composites and self-healing
- Fuel Cells and Related Materials
- Surfactants and Colloidal Systems
- Rheology and Fluid Dynamics Studies
- Nanopore and Nanochannel Transport Studies
- Covalent Organic Framework Applications
- Conducting polymers and applications
- Pickering emulsions and particle stabilization
- Membrane-based Ion Separation Techniques
- Carbon Nanotubes in Composites
- Material Dynamics and Properties
- Graphene research and applications
- Machine Learning in Materials Science
- Innovative Microfluidic and Catalytic Techniques Innovation
- Advanced Battery Materials and Technologies
- Dendrimers and Hyperbranched Polymers
Universität Hamburg
2016-2025
Helmholtz-Zentrum Hereon
2016-2025
Software (Spain)
2019-2023
Philips (United Kingdom)
2017-2021
Polymer Research Institute
2018-2020
Flex (Mauritius)
2019
Max Planck Society
1994-2015
Hamburg Institut (Germany)
2014
University of Bayreuth
2001-2012
Technion – Israel Institute of Technology
2012
The purpose of this work is the structural analysis graphene oxide (GO) and by means a new model to answer questions arising from Lerf-Klinowski Lee models. Surface functional groups GO layers oxidative debris (OD) stacked on them were investigated after OD was extracted. Analysis performed successfully using Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible (UV-Vis), X-ray photoemission (XPS), energy-dispersive (EDX), Raman spectroscopy, solid-state nuclear magnetic...
We describe the synthesis and solution properties of sheet- disclike Janus particles, containing an inner crosslinked polybutadiene (PB) layer two different outer sides polystyrene (PS) poly(tert-butyl methacrylate) (PtBMA). The structures formed upon adsorption flat particles onto solid substrates as well in THF are investigated. discs obtained a template-assisted synthetic pathway followed by sonication. Selectively crosslinking lamellar PB domains well-ordered microphase-separated bulk...
A novel strategy to synthesize amphiphilic surface-compartmentalized nanoparticles based on linear ABC triblock copolymers is presented. These so-called Janus micelles consist of a cross-linked core and corona with "northern" "southern" hemisphere. Selectively cross-linking spherical domains the polybutadiene middle block in well-ordered bulk morphology polystyrene-block-polybutadiene-block-poly(methyl methacrylate) copolymer (SBM) leads conservation compartmentalization outer blocks after...
We describe the synthesis and solution properties of Janus micelles containing a polybutadiene (PB) core compartmentalized corona consisting poly(methacrylic acid) (PMAA) polystyrene (PS) hemisphere. The were obtained via cross-linking middle block microphase-separated PS-block-PB-block-PMMA triblock copolymer in bulk state, followed by alkaline hydrolysis poly(methyl methacrylate) (PMMA) ester groups. Results fluorescence correlation spectroscopy, field flow fractionation, light scattering,...
Abstract The aim of this review paper is to give an overview the research activities GKSS in field polymer based membranes. After summarizing historic development membrane science at GKSS, it describes different classes polymeric materials for membranes, and characterization design membrane‐based separation processes followed by examples applications will also be presented. In last chapter we try outlook future research.
The confinement of crystallizable blocks within AB or ABC microphase-separated block copolymers in the nanoscopic scale can be tailored by adequate choice composition, molecular weight, and chemical structure. In this work we have examined crystallization behavior a series incorporating one two following blocks: polyethylene, poly(ε-caprolactone), poly(ethylene oxide). density confined microdomain structures (MD) specific compositions, cases where MD are dispersed as spheres, cylinders, any...
Three series of ABC heteroarm star terpolymers with arms polystyrene (S), polybutadiene (B) and poly(2-vinylpyridine) (V) were synthesized anionically using non-homopolymerizable macromonomers functionalized a terminal 1,1-diphenylethylene unit. Ultrathin samples from solution cast films stained OsO4, CH3I or I2 studied by transmission electron microscopy (TEM). The morphologies found include dense packings cylinders tetragonal distorted hexagonal order, two V surrounded six B S cylinders,...
Abstract Double stimuli‐responsive membranes are prepared by modification of pH‐sensitive integral asymmetric polystyrene‐ b ‐poly(4‐vinylpyridine) (PS‐ ‐P4VP) diblock copolymer with temperature‐responsive poly( N ‐isopropylacrylamide) (pNIPAM) a surface linking reaction. PS‐ ‐P4VP first functionalized mild mussel‐inspired polydopamine coating and then reacted via Michael addition an amine‐terminated pNIPAM‐NH 2 under slightly basic conditions. The thoroughly characterized nuclear magnetic...
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication the EditorNEXTJanus CylindersLiu, Volker Abetz, and Axel H. E. MüllerView Author Information Makromolekulare Chemie II Bayreuther Zentrum für Kolloide und Grenzflächen, Universität Bayreuth, D-95440 Germany Cite this: Macromolecules 2003, 36, 21, 7894–7898Publication Date (Web):September 18, 2003Publication History Received29 April 2003Revised20 August 2003Published online18 September inissue 1 October...
We present in-depth studies of the size tunability and self-assembly behavior Janus cylinders possessing a phase segregation into two hemicylinders. The are prepared by cross-linking lamella-cylinder morphology polystyrene-block-polybutadiene-block-poly(methyl methacrylate) block terpolymer. length can be adjusted both amplitude duration sonication treatment from micro- to nanometer length. corona biphasic particle is evidenced selective staining PS domains with RuO4 subsequent imaging....
Conjugated microporous polymers (CMPs) have attracted much interest due to their intrinsic porosity, outstanding stability, and high variability. However, the processing of these materials for membrane application has been limited insoluble nature when synthesized as bulk material. Here we report synthesis freestanding CMP-nanomembranes via layer-by-layer growth a "click" based conjugated polymer on sacrificial substrate. After dissolution substrate CMP-nanomembrane can be transferred porous...
The present work reports on the gas transport behavior of mixed matrix membranes (MMM) which were prepared from multi-walled carbon nanotubes (MWCNTs) and dispersed within polymers intrinsic microporosity (PIM-1) matrix. MWCNTs chemically functionalized with poly(ethylene glycol) (PEG) for a better dispersion in polymer MMM-incorporating (f-MWCNTs) fabricated by dip-coating method using microporous polyacrylonitrile membrane as support characterized separation performance. Gas permeation...
A simple way to generate isoporous membranes with tailored pore sizes is shown. Block copolymers of different compositions are blended in solution, and obtained by solution casting followed nonsolvent-induced phase separation. This enables the preparation integral asymmetric a defined size for given sets block just choosing right blend composition.