A5007662668- Polymer composites and self-healing
- Polymer Nanocomposites and Properties
- Synthesis and properties of polymers
- Dendrimers and Hyperbranched Polymers
- Silicone and Siloxane Chemistry
- Advanced Polymer Synthesis and Characterization
- Polymer Surface Interaction Studies
- Synthetic Organic Chemistry Methods
- biodegradable polymer synthesis and properties
- Graphene research and applications
- Hydrogels: synthesis, properties, applications
- Membrane Separation and Gas Transport
- Polydiacetylene-based materials and applications
- 3D Printing in Biomedical Research
- Epoxy Resin Curing Processes
- Concrete and Cement Materials Research
- Conducting polymers and applications
- Membrane Separation Technologies
- Antibiotics Pharmacokinetics and Efficacy
- Electrospun Nanofibers in Biomedical Applications
- Proteoglycans and glycosaminoglycans research
- Photopolymerization techniques and applications
- Carbon Nanotubes in Composites
- Polymer crystallization and properties
- Building materials and conservation
Czech Academy of Sciences, Institute of Macromolecular Chemistry
2013-2024
University of Siegen
2023
Folkwang University of the Arts
2023
University of Belgrade
2013
Institute of Macromolecular Chemistry
2011-2012
Abstract Aliphatic polycarbonate‐based polyurethane (PC‐PU) elastomers as well their nanocomposites with organic‐modified clay (bentonite for organic system) were synthesized. Macrodiols (MD) (randomly copolymerized aliphatic PC‐glycols of molecular weight about 2000: T5652, T4672, and T4692), hexamethylene diisocyanate, butane‐1,4‐diol used starting materials. Solid‐state NMR Fourier transform infrared spectroscopy, small‐angle X‐ray scattering, wide‐angle diffraction, atomic force...
Abstract To tailor cell–surface interactions, precise and controlled attachment of cell‐adhesive motifs is required, while any background non‐specific cell protein adhesion has to be blocked effectively. Herein, a versatile highly reproducible antifouling surface modification based on “clickable” groups hierarchically structured diblock copolymer brushes for the cells reported. The polymer brush architecture combines an bottom block poly(2‐hydroxyethyl methacrylate) poly(HEMA) ultrathin...
Abstract Thermal, thermomechanical, tensile and gas transport properties of aliphatic polycarbonate‐based polyurethanes (PC‐PUs) their nanocomposites with bentonite for organic systems were studied. Hard segments are formed from hexamethylene diisocyanate butane‐1,4‐diol. All PC‐PUs feature high degree the phase separation. Three transitions detected by temperature‐modulated differential scanning calorimetry (TMDSC) dynamic mechanical thermal analysis. TMDSC revealed filler affinity both to...
Two series of polyurethane (PU) networks based on Boltorn ® hyperbranched polyester (HBP) and hydroxyethoxy propyl terminated poly(dimethylsiloxane) (EO-PDMS) or hydroxy (HP-PDMS), were synthesized.The effect the type soft PDMS segment properties PUs was investigated by Fourier transform infrared spectroscopy (FTIR), contact angle measurements, surface free energy determination, X-ray photoelectron (XPS), scanning electron microscopy (SEM), atomic force (AFM), dynamic mechanical thermal...
ABSTRACT Stable water‐borne polyurethane dispersions (PUDs) were prepared from bifunctional aliphatic polycarbonate‐based macrodiol, 2,2‐bis(hydroxymethyl)propionic acid (DMPA), 1,6‐diisocyanatohexane, 1,4‐butanediol (BD), and triethylamine. Water‐borne dispersion particles are thus solely formed self‐assembled linear PU chains. Both PUDs PUD‐based films characterized with regards to the concentration of DMPA (ionic species content) BD (hard‐segment content). Average particle size decreased...
Segmented polyurethanes (PURs) were prepared from α,ω-dihydroxypoly(propylene oxide)-b-poly(dimethylsiloxane)-b-poly(propylene oxide) (PPO–PDMS) as the soft segment and 4,4′-diphenylmethane diisocyanate 1,4-butanediol hard segment, via two-step polyaddition process in solvent mixture. The content of segments is range 10 to 60 wt %. structure composition PURs are determined by 1H NMR, 13C ATR-FTIR spectroscopy. Incorporation PPO–PDMS leads improvements thermal stability. Small- wide-angle...
Novel poly(urethane–ester–siloxane) networks, based on hydroxypropyl terminated poly(dimethylsiloxane) (PDMS), 4,4′-methylenediphenyl diisocyanate, and hyperbranched polyesters (HBPs) of the second third pseudogenerations, were synthesized by two-step polymerization. The effects PDMS content pseudogeneration number HBPs structural, thermomechanical, thermal, surface properties polyurethanes investigated. Thermomechanical thermal FTIR, SAXS, SEM results indicated good microphase separated...
Polyurethane networks based on Boltorn hyperbranched polyesters (HBPs) of different pseudogenerations as cross-linkers, α,ω-dihydroxy(ethylene oxide–poly(dimethylsiloxane)–ethylene oxide) (EO–PDMS–EO) and 4,4′-methylenediphenyl diisocyanate were synthesized using a two-step polymerization reaction in solution. The influence the pseudogeneration number HBPs thermomechanical thermal properties morphologies polyurethane was investigated FTIR, DMTA, TGA, hardness measurements, SEM, SAXS....
ABSTRACT A multiscale approach spanning from the segmental (subnanometer) up to micrometer level was applied for detailed study of self‐assembly aliphatic block polyurethane (PU) elastomers. To understand principles self‐organization hard and soft segments in complex multi‐component systems, several two‐component model PU samples, that is, products 1,6‐diisocyanatohexane (HDI) with three diols differing length constitution were also prepared, characterized, investigated: (i)...
Well-defined poly(2-isopropenyl-2-oxazoline) brushes are prepared via aqueous Cu(0)-RDRP under optimized conditions and their high resistance against non-specific protein fouling versatility in surface functionalization demonstrated.
Novel poly(dimethylsiloxane)-based polyurethane nanocomposites (TPU-NCs) were synthesized using in situ polymerization with the nanoclay Cloisite 30B. Differential scanning calorimetry, thermogravimetric analysis, and dynamic mechanical thermal analysis showed that TPU-NCs an organoclay content of ≤5 wt % exhibited increased stability, storage modulus, hard-segment melt temperatures but decreased degrees crystallinity. displayed surface hydrophilicity enhanced free energy increasing content....