Walter de Gruyter GmbH
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Synthesis and phosphorescent properties of the copolymers of N-vinylcarbazole, methyl methacrylate and iridium complex
Walter de Gruyter GmbH - Tập 32 - Trang 206-213 - 2014
The copolymers containing carbazole unit and iridium complexes, such as
(Ir(bpy)2Cl, Ir(mbpy)2Cl and Ir(Brbpy)2Cl, were synthesized via radical
copolymerization of N-vinylcarbazole, methyl methacrylate and iridium complex.
The synthesized copolymers were characterized by FT-IR, UV-Vis absorption
spectroscopy and photoluminescence (PL) spectroscopy, respectively. According to
the results, the copol...
Dry sliding wear behaviour of fly ash particles reinforced AA 2024 composites
Walter de Gruyter GmbH - Tập 30 - Trang 204-211 - 2012
AA 2024 alloy has been melted and cast in a permanent cast iron mould in the
form of 18 mm Φ fingers. The synthesis of AA2024 alloy − 5wt.% fly ash composite
was made by stir cast technique. A uniform distribution of fly ash particles in
the matrix phase was obtained. Good bonding between the matrix and reinforcement
was also achieved. Dry sliding wear behavior of the alloy and the composite has
b...
Magnetic and electric behavior of NiFe2O4-PVDF nanocomposites
Walter de Gruyter GmbH - Tập 30 - Trang 419-425 - 2012
NiFe2O4-PVDF composites in different ratios (10 %, 30 % and 50 %) were prepared
in two steps. Firstly, fine nanosized NiFe2O4 powder was synthesized using the
precursor solution method. Then the composites were made by hot-press technique.
The presence of both the phases (ceramic and polymer) was confirmed by XRD
micrographs. The average particle size of the composites varied from 18–23 nm.
SEM mi...
Metamaterials based on polymer dispersions of nanoparticles and particles of copper obtained by cathodic current pulse electrolysis
Walter de Gruyter GmbH - - 2011
Synthesis and in vitro investigation of sol-gel derived bioglass-58S nanopowders
Walter de Gruyter GmbH - Tập 30 - Trang 45-52 - 2012
The aim of this research is the synthesis of bioglass-58S nanopowders by sol-gel
method. Also, the effect of aging time of parent sols on the morphology,
structure and particle size was investigated. Bioglass-58S powders were analyzed
by X-ray diffraction patterns (XRD), Fourier transform infrared spectroscopy
(FTIR), zetasizer instrument, scanning electron microscopy (SEM) and
transmission electr...
Carbonaceous materials for adsorptive refrigerators
Walter de Gruyter GmbH - Tập 30 - Trang 131-136 - 2012
Carbon monoliths prepared from hard coal precursors were obtained. The porous
structure of the monoliths was evaluated on the basis of nitrogen adsorption —
desorption equilibrium data. The investigated monoliths have a well-developed
microporous structure with significant specific surface area (S BET ).
Equilibrium studies of methanol vapour adsorption were used to characterize the
methanol adsor...
The influence of densification temperature and the size of powder particles on the properties of isotropic Nd-Fe-B magnets made of quenched ribbons
Walter de Gruyter GmbH - Tập 30 - Trang 297-302 - 2012
The influence of densification temperature and the size of powder particles on
magnetization of remanence J r , coercivity J H c of hot-densified Nd-Fe-B
magnets made of MQP-A quenched ribbons was investigated. A connection between
magnetic properties, parameters of production process and microstructure of the
magnet was confirmed. It was found that the remanence of isotropic magnet
depends on tem...
FeS2 quantum dots sensitized nanostructured TiO2 solar cell: photoelectrochemical and photoinduced absorption spectroscopy studies
Walter de Gruyter GmbH - - 2011
Chemical modification of TiO2 by H2PO 4 − /HPO 4 2− anions using the sol-gel route with controlled precipitation and hydrolysis: enhancing thermal stability
Walter de Gruyter GmbH - - 2014
Two titanium phosphate materials (T p P and T h P) have been successfully
synthesized by sol-gel route with controlled precipitation and hydrolysis. The T
p P material was obtained from the reaction between precipitated titania and
phosphate buffer solution H2PO 4 − /HPO 4 2− (pH = 7.3). The T p P material was
prepared through hydrolysis of titanium in the presence of H2PO 4 − /HPO 4 2 .
The proba...
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