Thermal Decomposition Behaviour of Bis(4-Nitrophenol)-2,4,6-Triamino-1,3,5-Triazine Monohydrate
N. Kanagathara a, M.K. Marchewka b and G. Anbalaganc
aSchool of Basic Sciences, Vel Tech University, Chennai-62, India
bInstitute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wrocław 2, Poland
cDepartment of Nuclear Physics University of Madras Guindy Campus Chennai-600025
Received: October 12, 2015; In final form: May 2, 2016
Full Text PDF
Thermal decomposition behavior of bis (4-nitrophenol)-2,4,6-triamino-1,3,5-triazine monohydrate (BNPM) has been studied by means of thermogravimetric analysis at three different heating rates 10, 15 and 20°C min-1. Non-isothermal studies of BNPM have revealed that the decomposition occurs in three stages involving dehydration and decomposition. The values of effective activation energy (Ea), pre-exponential factor (A) of each stage of thermal decomposition for all heating rates were calculated by model free methods: Arrhenius, Flynn-Wall, Friedman, Kissinger and Kim-Park method. A significant variation of effective activation energy (Ea) with conversion (α ) indicates that the process is kinetically complex. The linear relationship between the A and Ea values was well established (compensation effect). Dehydration stage was governed by the Avrami-Erofeev model (A2) and decomposition stages were governed by the Avrami-Erofeev model (A4).

DOI: 10.12693/APhysPolA.129.1235
PACS numbers: 83.60.St, 87.15.R-, 91.60.Ki, 82.20.Pm