A5082588763- Block Copolymer Self-Assembly
- Advanced Polymer Synthesis and Characterization
- Membrane Separation and Gas Transport
- Polymer Surface Interaction Studies
- Membrane Separation Technologies
- Fuel Cells and Related Materials
- Synthesis and properties of polymers
- Rheology and Fluid Dynamics Studies
- Polymer Nanocomposites and Properties
- Hydrogen Storage and Materials
- Anodic Oxide Films and Nanostructures
- biodegradable polymer synthesis and properties
- Machine Learning in Materials Science
- Hydrogels: synthesis, properties, applications
- Nanofabrication and Lithography Techniques
- Advanced Battery Materials and Technologies
- Muon and positron interactions and applications
- Polymer crystallization and properties
- Nanopore and Nanochannel Transport Studies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Ammonia Synthesis and Nitrogen Reduction
- Corrosion Behavior and Inhibition
- Force Microscopy Techniques and Applications
- Extraction and Separation Processes
- Ionic liquids properties and applications
Helmholtz-Zentrum Hereon
2016-2025
Philips (United Kingdom)
2014-2021
University of Ioannina
2010-2019
National Tsing Hua University
2016-2019
Polymer Research Institute
2016-2018
Leibniz Institute of Polymer Research
2012-2013
The formation of well-oriented cylinders with perpendicular morphology for polystyrene-b-polydimethylsiloxane (PS-PDMS) thin films was achieved by spin coating. self-assembled PS-PDMS nanostructured were used as templates nanopatterning; the PDMS blocks can be oxidized silicon oxy carbide microdomains, whereas PS degenerated a simple oxygen plasma treatment one-step oxidization. As result, freestanding hexagonally packed nanochannels directly fabricated and masks pattern transfer to...
A simple method to create a variety of nanostructures via the self-assembly single composition silicon-containing block copolymer (BCP) is developed. By using selective solvents for polystyrene-block-poly(dimethylsiloxane) (PS–PDMS), phase behavior intrinsic BCP can be enriched due strong segregation PS–PDMS enabling diversity PS–PDMS/solvent mixtures and clear-cut transitions upon solvent evaporation. The solution-state behaviors system in different are systematically studied...
Controlling the orientation of nanostructured thin films block copolymers (BCPs) is essential for next-generation lithography using BCPs. According to conventional wisdom, BCP mainly determined by molecular interactions (enthalpy-driven orientation). Here, we show that entropic effect can be used control films. Specifically, architecture star-block consisting polystyrene (PS) and poly(dimethylsiloxane) (PDMS) blocks regulate contribution self-assembled nanostructures. The study unequivocally...
Three grades of PolyActive block copolymers are investigated for CO2 separation from light gases. The polymers composed 23 wt % poly(butylene terephthalate) (PBT) and 77 poly(ethylene glycol (PEGT) having the glycol) segments 1500, 3000, 4000 g/mol, respectively. A commercial PEG POSS (poly(ethylene functionalized polyoctahedral oligomeric silsesquioxanes) is used as a nanofiller these to prepare nanocomposites via solvent casting method. Single gas permeabilities N2, H2, CH4, measured...
In this work, mixed-matrix membranes (MMMs) for gas separation in the form of thick films were prepared via combination polymer Matrimid® 5218 and activated carbons (AC). The AC particles had a mean particle size 1.5 μm pore diameter 1.9 nm. by slow solvent evaporation from casting solutions chloroform, which varying polymer⁻AC ratio. It was possible to produce stable with up content 50 vol % AC. Thorough characterization experiments accomplished differential scanning calorimetry...
Abstract This work proposes a fuel cell power supply system for underwater applications (e.g., autonomous vehicles), where artificial gills, based on polymer membrane, harvest the required oxygen from ambient water. In this system, circulating air‐flow continuously supplies proton exchange membrane with oxygen, which is replenished using membrane. The serves as interface between and water, preventing water flux while allowing an across driven by partial pressure gradient. To demonstrate...
Abstract Polymers of intrinsic microporosity porosity (PIMs) represent a versatile class materials first discovered over 20 years ago. Despite extensive studies resulting in the optimization their synthesis, underlying reaction kinetics have never been focus research. This study presents detailed examination involved low‐temperature PIM‐1 combining online calorimetry with offline characterization techniques. A kinetic model that describes both initial deprotonation and subsequent...
Macromolecular Rapid CommunicationsVolume 46, Issue 3 2570009 Back CoverFree Access Polymerization-Induced Self-Assembly for the Synthesis of Polyisoprene-Polystyrene Block and Random Copolymers: Towards High Molecular Weight Conversion Maryam Moradi, MoradiSearch more papers by this authorProkopios Georgopanos, Prokopios GeorgopanosSearch author First published: 06 February 2025 https://doi.org/10.1002/marc.202570009AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack...
The United Nations Framework Convention on Climate Change (UNFCCC) has identified climate change, pollution, and biodiversity loss as the most critical interconnected challenges facing humanity today, collectively known "triple planetary crisis." Each of these issues uniquely impacts ocean, monitoring effects requires both advanced traditional technologies working in tandem. Since 2012, Essential Ocean Variables (EOV) framework been central to global ocean observation efforts. This...
A new technique for the modification of lamellar domain sizes in polymeric ionic liquid block copolymers has been proposed. Anion exchange liquids opens ways to modify lamella domains without modifying ratio between two different blocks neat copolymer. This study focuses on influence quaternization poly(2-vinylpyridine) poly(styrene-b-2-vinylpyridine) (PS-b-P2VP) and effect anion nanostructured phases thin films. The resulting materials obtained from were characterized with Fourier transform...
A new methodology for the preparation of nanostructured magnetic thermoset materials without any kind metal oxide or nanoparticles has been proposed. The present study focuses on nanostructuration based poly(ionic liquid)s block copolymer and subsequent production thermoset. Judicious selection copolymer, such as P2VP-b-PMMA, soluble in epoxy its quaternization leads to a phase modification system, from totally system. Different degree pyridine groups showed range values which allowed...
Well-defined linear (<italic>n</italic> = 1, 2) and star 3, 4) architecture (PS-<italic>b</italic>-PDMS)<sub>n</sub> block copolymers were synthesized by anionic polymerization in combination with chlorosilane chemistry. The self-assembly is significantly influenced entropy constraints for the samples due to overcrowding.
Controlling the orientation of nanostructured block copolymer (BCP) thin films is essential for next-generation lithography. However, obtaining BCP with perpendicular remains a challenge because surface selectivity to different blocks. This especially severe silicon-containing BCPs which notorious its high energy difference between constituted Here, we demonstrate new approach achieve aspect ratio using combination architecture effect (entropy effect) and air plasma treatment (enthalpy...
Reversible addition-fragmentation chain transfer (RAFT) polymerization is one of the most common controlled techniques to prepare well-defined, rather narrow dispersed polymers due reduced demands in reactant preparation. Despite these advantages, RAFT was so far primarily utilized on small laboratory scales. This study presents a first step scaled-up by developing and experimentally validating kinetic model example 4-vinylpyridine (4VP), which date not described literature. With...
Aromatic polyimides containing different ratios of <italic>ortho</italic>-hydroxy to <italic>ortho</italic>-allyloxy units were prepared and thermally rearranged.