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Abstract
Two methods were employed for measuring fire retardancy of minerals hydromagnesite, huntite and natural hydromagnesite/huntite mixtures, on forest species. The first was based on DTG under N2 atmosphere, to isolate pyrolysis of forest species and the second on LOI for combustion measurements. The selected forest species: Pinus halepensis Mill. and Cistus incanus L., were collected from a WUI zone and were treated with 5, 10, 15 and 20 mass/mass% of minerals. Regarding DTG analysis, the minerals decrease pyrolysis rate and increase mass residue of forest species. Regarding LOI tests, minerals increase pilot ignitability of forest fuels. Hydromagnesite exhibits the best overall performance.
Introduction TG/DTG curves can be used to estimate alimentary fats quality by determining the kinetic parameters and induction period of oxidation. Also, since the thermal decomposition reactions imply oxidative exothermic and
Abstract
The application of derivativ thermogravimetry (DTG) to investigate polymerisation mechanisms is illustrated using the radical polymerisation of di-n-alkyl itaconates as well as the photoinitiated polymerisation of methyl methacrylate by colloidal CdS. The thermal properties of the resulting polymers are described. The advantages and disadvantages of DTG are discussed.
the simultaneous TG/DTG–DTA technique in inert and oxidative atmospheres. Simultaneous TG-DTA coupled with MS was used for the analysis of the gaseous decomposition products in argon atmosphere, while Powder XRD was used for the verification of the
Early stages hydration of high initial strength Portland cement
Part I. thermogravimetric analysis on calcined mass basis
Introduction Thermogravimetric (TG) and derivative thermogravimetric (DTG) analysis have helped to understand and to study the behavior of cementitious materials during their hydration stages. Among these applications, there
crystals are identified and characterized by TG, DTA, and DTG. Experimental Good crystal can be grown in gels in a variety of ways; the single diffusion method was employed in the present study for the growth of calcium cadmium
Thermal analysis The thermogravimetric analysis of BTU was carried out for sample mass of 15 mg between 50 and 800 °C at heating rate of 10 K/min in nitrogen atmosphere on a NETZCH STA 409C/CD thermal analyzer. The TG-DTG curves of BTU are shown
characterisation. Therefore, many authors have used these techniques for various materials characterisation [ 12 – 32 ]. The present article describes TG, DTG, XRD and FTIR spectral data of Co(II)-exchanged montmorillonite (Co(II)-MMT) with EDA, TrMeEDA and TeMeEDA
Thermal properties of solid complexes with biologically important heterocyclic ligands
Part IV. Thermal and spectral properties of 2-chloro- and 2-bromobenzoato Cu(II) complexes with nicotinamide and different bonded water molecules
–IV Complex DTG TG T max /°C Temp. interval/°C Δ m (found
The computer kinetic analysis of simultaneously obtained TG and DTG curves of CaCO3 decomposition has been carried out. Ten different kinetic equations have been tested to decide the mechanism which drives the reaction. Either a two-thirds kinetic equation (phase boundary process) or a Jander equation (diffusion process) satisfactorily describe the kinetic data of both decomposition curves. From these results we conclude there is no chance of differentiating between these two mechanisms by only the kinetic analysis of TG and DTG curves separately.
