Authors:Yanchun Li, Kou Chenxia, Chuan Huang, and Yi Cheng
TG-DTG-DSC curves of TEGDN/NC Propellant at 2 K/min are shown in Fig. 2 . At 2 K/min the total mass loss has two stages: the first stage starts from 117° to 172°, the mass loss of first stage is about 22.48%; the second stage is from 172° to 250
Authors:V. M. Galogaža, E. A. Prodan, V. A. Sotnikova-Yuzhik, G. V. Peslyak, and L. Obradović
The iso- and non-isothermal transformations taking place on the heating of LiH2PO4, Li2HPO4, Li5P3O10·5H2O, mixtures of LiH2PO4+2Li2HPO4 and LiH2PO4+Li4P2O7(l) in vacuum, air and water vapour atmospheres at 20–1050° were studied using TG, DTG, DSC, DTA, IR spectroscopy, XRD and TLC analyses. It was shown that solid-phase interaction of the mixture components with the general ratio Li ∶ P ≈ 5 ∶ 3, in contrast to the interaction of analogous sodium (potassium) phosphate mixture components, does not lead to the quantitative formation of anhydrous triphosphate. This is explained by the high crystallization rate of lithium pyrophosphate, which, due to its low reactivity, does not participate in further anion condensation. The increase of triphosphate yield is promoted by the liquid phase formed on disproportionation of acid salts, on melting of reaction components or as a result of introduction of urea additive.
Authors:Adriana Samide, Bogdan Tutunaru, Aurelian Dobritescu, and Catalin Negrila
, the beginning of hematite formation occurs at higher temperatures [ 30 ]. Moreover, composition and microstructure will influence the kinetics of the dehydroxylation of goethite [ 33 ].
Figure 5a shows TG/DTG/DSC/DTA curves for
Authors:P. Budrugeac, Andrei Cucos, and Lucreţia Miu
object. These instruments allow also the numerical differentiating of TG curves. As it will be shown in “ Simultaneous TG/DTG + DSC or DTA analysis ” section, the DTG curves so obtained give us information concerning the deterioration of old leathers
478.05 and 639.05 K correspond to the two stages decomposition, respectively.
TG/DTG/DSC curves of the thermal decomposition of DPG. The flow rate of nitrogen is 100 mL min −1 . The heating rate equals 10
Authors:Shi Jingyan, Wang Zhiyong, Liu Yuwen, and Wang Cunxin
performed on a Setaram Setsys 16 TG-DTG/DSC Instrument, France. Instrument calibration was performed with standard indium, tin, lead, zinc, silver, and gold samples of known melting temperature. All the standards were of purity >99.99%. For the kinetics
Authors:Agnieszka Jabłońska–Wawrzycka, Małgorzata Zienkiewicz, Maciej Hodorowicz, Patrycja Rogala, and Barbara Barszcz
have only structural characterization. For this reason our research has been focused mainly on the thermal (TG, DTG, DSC) properties. In the presented study, we describe non-hydrothermal method of synthesis, elemental analysis, spectroscopic (IR, Raman