نتایج جستجو برای: تجزیههای حرارتی dta tga
تعداد نتایج: 21363 فیلتر نتایج به سال:
Caffeine loaded magnetic nanoparticle was successfully synthesized and were characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX), thermo gravimetric analysis (TGA), differential thermal analysis (DTA) and vibrating sample magnetometer (VSM). The resulting nanocom...
Nanocrystalline ZnO particles were prepared by a novel sonochemical route from zinc acetate and sodium hydroxide without any requirement of calcination steps at high temperature and without surfactants. Variations in several parameters and their effects on the structural (crystal size and morphology) properties of nanoparticles were investigated. Characterizations were carried out by X-Ray ...
Silica coated magnetite nanoparticles were covalent grafted with 3-aminopropyl trimethoxysilane to give APTSCMNPs. Reaction of the resulted nanomaterial with 4-formyl benzo-12-crown-4 ether afforded FB12C4/APTSMNPs nanocomposite material in which the crown ether moiety was attached through propyl chain spacer. Characterization of the prepared nanocomposite was performed wit...
a new metal-organic compound, [fe(pydc)(dmso)(h2o)cl], (where pydc is pyridine-2, 6-dicarboxylate and dmso is dimethyl sulfoxide), has been synthesized and characterized by singlecrystal x-ray diffraction, tga/dta, ir and raman spectroscopy. green-yellow crystals,crystallized in the monoclinic system, space group p21/n, a = 7.2461(4) å, b = 10.3018(4) å, c =17.7667(10) å, α = 90°, β = 90.014°(5...
The technological aspects of modification epoxy oligomer DER – 331 to provide improvement thermophysical characteristics composite materials and protective coatings based on them are presented. Cold-cured triethylenetetramine TETA hardener was used crosslink the binder (q = 10 parts by weight per 100 DER-331 resin). Thermogravimetric (TGA) differential thermal (DTA) analysis performed study mod...
In order to characterize stable composites that will contribute industrial applications, polypyrrole (PPy)/huntite were prepared by the physical method. Polypyrrole produced at various huntite concentrations (10, 20, 30, 40 wt.%). Polypyrrole/huntite was characterized Fourier transform infrared spectroscopy (FTIR), Thermal Gravimetric Analyses (TGA), Differential (DTA), Scanning electron micros...
Emission in the nanostructured materials is important in micro/nanoelectronic devices. We report here a strategy for the processing of micron and submicron fibers from a cobalt-containing hyperbranched polysilazane by electrospinning. The electrospun nanofibers have uniform average diameters of ~600 nm and lengths of ~10 μm. The photophysical properties of polycobaltsilazane (PCSN) are studied ...
Potassium Pentaborate nonlinear optical (NLO) material was synthesized by the solution growth method. The grown crystals were subjected to structural, optical and mechanical property studies. Crystal with excellent transparency were grown with maximum size of 9mm×8mm×5mm and the grown crystals were characterized by single crystal Single crystal XRD, FT-IR, TGA-DTA&DSC, and UV–vis-NIR studies. T...
Growth of bis (thiourea) cadmium formate single crystals from aqueous solution by slow evaporation technique has been reported. To optimize the growth conditions, nucleation parameters such as metastable zone width and induction period values are determined. The grown crystals are characterized by powder XRD technique. Thermal studies by TGA and DTA techniques confirm the decomposition of the s...
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