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The cobalt(II), nickel(II), copper(II), zinc(II), cadmium(II), silver(I) and mercury(II) complexes of diethyldithiocarbamic acid were prepared and their thermal properties determined by TG, DTA, and high temperature reflectance spectroscopy. It was found that the copper(II), nickel(II), and zinc(II) chelates were completely volatile and thus represent a new class of volatile metal chelates. Vapor pressure measurements were made on four of the metal complexes; heats of vaporization ranged from 9.3±0.2 kcal/mole for Na[Co(DDC)3] to 24.2±0.6 kcal/mole for Zn(DDC)2.

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The thermal properties of complex carbon-silica adsorbents (carbosils) were investigated using differential thermal analysis. The adsorbents were prepared by pyrolysis of methylene chloride. Pyrolysis reaction on silica surface was carried out at different temperatures (400–700 °C) and at different pressures of CH2Cl2 vapours. Thermal analysis was carried out in air atmosphere. The following parameters characterizing the properties of the adsorbents were determined: carbon content, specific surface area, carbon layer thickness, pore volume, mean pore radius, differential of heats of adsorption ofn-hexane and benzene, and micrographs. The correlation between topography and morphology of carbon deposits (dependent on the parameters of the pyrolysis process) and the courses of DTA and TG curves corresponding to individual carbosils have been determined.

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crystallization rate of PET or to improve the mechanical and thermal properties of PTT [ 16 – 21 ]. In the present study, PTT was used to reduce the processing temperature and increase the crystallization rate of PET [ 16 ]. Liang et al. found that PET–PTT blends

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thermal stability. The thermal properties of common alkyl imidazolium type ionic liquids are the subject of a number of studies in recent times [ 6 – 8 ] as the thermal stability is an important factor in their applications. McEwen has studied [ 9 ] the

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theoretical study of various thermal properties. Many mononitrides like HfN and ZrN are the proposed nitride metal/semiconductor superlattices which can act as phonon filters for reducing lattice thermal conductivity [ 12 ]. MgN is among the mononitrides

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Results and discussion Thermal properties of BPO Organic peroxides have organic (or carbon-containing) groups attached to the molecular chain at one side of the oxygen–oxygen bonding. Their thermal instability is caused by the

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Conclusions In this study, we have shown the preparation of two series of Ga 2 O 3 –PbO–P 2 O 5 glassy materials, which were characterized by physico-chemical and thermal properties. The density of prepared materials decreases and the molar volume

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thermo-mechanical properties and reduction of water sensitivities in composites are improved has led to the use of natural fibers as biodegradable fillers [ 9 ]. To characterize materials, it is important that its thermal properties be fully studied. This

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. Dynamic mechanical thermal properties The dynamic mechanical thermal analysis (DMTA) was utilized to investigate the dynamic mechanical behavior in order to further acquire the microstructure information of a UV-cured film. Figure 10 shows the

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, Pavithran , C , Abdul Khalil , HPS , Brahmakumar , M 2010 Mechanical and thermal properties of sisal fiber-reinforced rubber seed oil-based polyurethane composites . Mater Des 31 : 4274 – 4280 10.1016/j.matdes.2010

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