A5018502611- Polymer Nanocomposites and Properties
- Surface Modification and Superhydrophobicity
- Carbon Nanotubes in Composites
- Polymer Surface Interaction Studies
- Advanced Sensor and Energy Harvesting Materials
- Electrochemical sensors and biosensors
- Iron oxide chemistry and applications
- Dielectric materials and actuators
- Microfluidic and Capillary Electrophoresis Applications
- Polymer Nanocomposite Synthesis and Irradiation
- Analytical Chemistry and Sensors
- Polymer crystallization and properties
- TiO2 Photocatalysis and Solar Cells
- Ferroelectric and Piezoelectric Materials
- Tribology and Wear Analysis
- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- Enzyme Catalysis and Immobilization
- Advanced Theoretical and Applied Studies in Material Sciences and Geometry
- Electrostatics and Colloid Interactions
- Magnetic Properties and Synthesis of Ferrites
- Electrochemical Analysis and Applications
- Zeolite Catalysis and Synthesis
- Covalent Organic Framework Applications
- Advanced Nanomaterials in Catalysis
Laboratoire Plasma et Conversion d'Energie
2023-2024
Université Toulouse III - Paul Sabatier
2024
Centre National de la Recherche Scientifique
2024
Chuiko Institute of Surface Chemistry
2014-2024
National Academy of Sciences of Ukraine
2015-2024
This paper presents the fabrication of hydrophobic polymer nanomaterials with improved thermal characteristics based on MWCNTs and poly(dimethylsiloxane). The samples were synthesized by physical adsorption poly(dimethylsiloxane) onto P-MWCNTs surfaces in amount from 5 to 20 wt%. effect different content adsorbed structure properties prepared nanocomposites was studied detail using ATR-FTIR, SEM, TEM, XRD RS techniques. XPS results showed that increase PDMS surfaces, Si 2p atomic percentage...
A series of TiO2–ZrO2/SiO2 nanocomposites were synthesized using a liquid-phase method and characterized by various techniques, namely, nitrogen adsorption–desorption, X-ray diffraction (XRD), photoelectron spectroscopy (XPS), Raman spectroscopy, high-resolution transmission electron microscopy, photon correlation (PCS). It was revealed that the component ratio calcination temperature affect phase composition nanocomposites. Composites TiZrSi1 (TiO2:ZrO2:SiO2 = 3:10:87) TiZrSi2 (10:10:80)...
SiO2@PDMS and CeO2-ZrO2-SiO2@PDMS nanocomposites were prepared studied using nitrogen adsorption-desorption, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), measurements of advancing receding contact angles with water, microcalorimetry. The pore size distributions indicate that the textural characteristics change after oxide modification by poly(dimethylsiloxane) (PDMS). Composites are characterized mainly mesoporosity macroporosity aggregates...
ABSTRACT Effects of silica and silica/titania nanoparticles on glass transition segmental dynamics poly(dimethylsiloxane) (PDMS) were studied for composites a core–shell type using differential scanning calorimetry, thermally stimulated depolarization current, dielectric relaxation spectroscopy techniques. Strong interactions between the filler polymer suppress crystallinity ( T c , X ) affect significantly evolution in nanocomposites. The associated with consists three contributions,...
The presented study deals with the fabrication of highly stable and active nanobiocatalysts based on Candida antarctica lipase B (CALB) immobilization onto pristine poly(dimethylsiloxane) modified MWCNTs. MWCNTs/PDMS nanocomposites, containing 40 wt.% polymer two molecular weights, were successfully synthesized via adsorption modification. effect PDMS chains length textural/structural properties produced materials was studied by means nitrogen adsorption–desorption technique, Raman...
The aim of this study was to develop a technique analyze the crystalline and particulate morphology highly disperse complex metal metalloid oxides, which include both amorphous phases, using X-ray diffraction (XRD) data compute crystallite size distributions (CSD) compared particles distribution functions estimated from high-resolution transmission electron microscopy (TEM) images treated with specific software. Two versions XRD treatment methods were used: (i) full profile analysis (FPA)...
Abstracts A series of mixed oxides was synthesized by deposition the guest phase on highly dispersed oxide matrix. Fumed nanooxides SiO 2 , Al O 3 /Al and /TiO with specific surface area 65–91 m /g were selected as matrices. Co–Fe general formula Co 4x Fe x y (Co: = 4: 1) deposited using two-step method: (i) solvate-stimulated modification fumed nanocarriers mixture cobalt nitrate (II) iron (III) formate (ii) subsequent heat treatment up to 600 °C form . The aim this paper study influence...
Composites based on fumed silica with surface hydrophobic groups were synthesized by chemical substitution of silanol groups' proton for trimethylsilyl (TMS) groups, adsorption poly(dimethylsiloxane) (PDMS) and combined chemical-adsorption methods. Microcalorimetry measurements values the wetting contact angle water (Θ) obtained to investigate properties prepared materials. The hydrophilicity indexes (K h ) determined from relationship heat immersion in Q w non-polar decane d . Θ...
In this paper, we focus on fabrication and physicochemical properties investigations of silica–multiwalled carbon nanotubes/poly(dimethylsiloxane) composite coatings deposited the glass supports activated by cold plasma. Air or argon was used as carrier gas in plasma process. Multiwalled nanotubes were modified with poly(dimethylsiloxane) order to impart their hydrophobicity. The nanocomposite synthesized using sol–gel technique acid-assisted tetraethyl orthosilicate hydrolysis. stability...
A series of mixed oxides was synthesized by deposition a guest phase on highly dispersed oxide matrix.Fumed nanooxides SiO2, Al2O3, SiO2/Al2O3, and SiO2/Al2O3/TiO2 with the specific surface area 65-91 m 2 /g were selected as matrices.NiO/FexOy deposited using solvate-stimulated modification fumed nanocarriers nickel nitrate iron(III) formate subsequent heat treatment up to 600 °C form NiO/FexOy.The aim this work study influence composition structure matrices behavior composites in gaseous...