Authors:T. Fujimura, N. Sarugaku, M. Tsuchiya, K. Ishimaru, and T. Kojima
The TG analyses are given for variously meta- and/or para-linked aromatic polyamides with various benzimidazolyl (BI)contents.
The TG curves of the polymers were evaluated within 600C by use of an equation for multiple events. The TG curves of BI-substituted
polymers are expressed for triple events, though the TG curves of unsubstituted polymer are expressed for double events. The
amount of residue of BI-substituted polymers at 800C is larger than that of unsubstituted polymers, perhaps because moieties
concerning BI degrade at higher temperatures.
Some manganese oxides are considered hyperactive under microwave irradiation because of their extremely high heating rates
in air. In order to further understand this hyperactivity, thermodynamic calculations, thermogravimetric analysis and both
real and imaginary permittivity determinations were performed for hausmannite (Mn3O4) as a function of temperature in an air atmosphere. The thermodynamic results demonstrated reasonable agreement with the
thermogravimetric analysis data. A comparison of the derivative thermogravimetric analysis data with the derivative of both
the real and the imaginary permittivities confirmed that the extremely high values of the permittivities were due to the conversion
of the hausmannite to bixbyite (Mn2O3). The microwave hyperactivity of the manganese oxides in air is explained in terms of the high permittivities of bixbyite.
Authors:Yinghao Luan, Junhong Zhao, Jinghui Yang, and Xinsheng Ma
fluorocarbons. Bas et al. investigated thermal degradation of Nafion membranes with thermogravimetricanalysis coupled to mass spectroscopy (TG-MS) [ 12 ]. For H-type ionomers, besides the weight loss of water below 200 °C, there exist three weight loss steps
Authors:Jacek Przepiórski, Justyna Karolczyk, Tomoki Tsumura, Masahiro Toyoda, Michio Inagaki, and Antoni W. Morawski
/or H 2 O.
In this article, we have presented the results of thermogravimetricanalysis of PET in mixtures with some magnesium compounds and for individual components. Obtained results proved strong
Authors:I. Blanco, L. Abate, F. A. Bottino, P. Bottino, and M. A. Chiacchio
ATR sampling accessory.
A Shimadzu DTG-60 simultaneous DTA-TG apparatus was used for both thermogravimetricanalysis (TG) and differential thermal analysis (DTA). The calibrations of temperature
Authors:Wu Yanbo, Fu Jie, Zeng Sisi, Sun Peng, and Yan Yingchun
and composition were studied. Koch and Kaminsky pyrolyzed refinery sewage sludge, using the products obtained in the plant (oil and gas), and reduced the waste disposal [ 14 ].
The thermogravimetricanalysis (TG) is one of the techniques used
Authors:Fikru Tafesse, Elias Aphane, and Elizabeth Mongadi
The existence of an inner sphere water in sodium tris-carbonatocobaltate(III) prepared by the Bauer and Drinkard method was
confirmed by thermogravimetry, which led to its formulation as sodium aquo-tris-carbonatocobaltate(III) dihydrate, Na3[Co(H2O)(CO3)3]·2H2O. Hydrolytic study on 4-nitrophenylphosphate promoted by [Co(tn)3]3+ afforded corborating evidence for the existence of inner sphere water in the complex leading to its formulation as [Co(tn)3(H2O)]3+. Another variety of the tris-carbonato anion, [Co(NH3)6][Co(CO3)3], was prepared and subjected to thermogravimetric analysis, and the absence of inner sphere water in the compound was confirmed.
The plausible existence of inner sphere water for the compounds that emanate from the synthetic routes utilizing the Bauer
and Drinkard method in the crystalline phase is proposed.
Authors:O. Nikulicheva, V. Fadeeva, and V. Logvinenko
A new method was developed for evaluation of the results of thermal analysis of phenol stabilizers used for the thermal stabilization
of light-coloured polymers. The integral observed decomposition temperature obtained by using Doyle's method from the thermogravimetric
curves was used as a basis of approach. For this purpose, the computational program TERMOGRAF for PC/AT is suggested. It is
considered that the integral observed decomposition temperature is a more reliable and reproducible characteristic of thermal
stability than the approach based on the temperature of beginning of decomposition.