Naslov
Influence of NC propellant sample self-heating on Arrhenius kinetic constants derived from non-isothermal DSC measurements

Autori
Sućeska, Muhamed ; Matečić Mušanić, Sanja ; Rajić Linarić, Maša

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the VII. Seminar / Vagenkneeht, Jiri - Pardubice : University of Pardubice, 2004, 285-298

Skup
New Trends in Research of Energetic Materials

Mjesto i datum
Pardubice, Češka Republika, 20.04.2004. - 22.04.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
single base propellants; differential scanning calorimetry; kinetic constants; self-heating

Sažetak
Non-isothermal isoconversional kinetic methods described by Ozawa, and Flynn and Wall are widely used to study kinetics of energetic materials. However, to obtain valuable kinetic constants great care must be taken to ensure proper experimental conditions, as well as data treatment procedure. In this paper we have discussed the influence of NC propellant sample mass and heating rate during non-isothermal DSC measurements, i.e. the influence of NC propellant sample self-heating on kinetic results derived in accordance with the Ozawa and Flynn and Wall methods. It was calculated by the Ozawa method that the activation energy equals ~199 kJ/mol in the case when sample self-heating has been avoided, while in the case of sample self-heating existence the activation energy was calculated to be ~191 kJ/mol. Also, it was shown that the activation energy calculated by the Flynn and Wall method depend not only on sample self-heating existence but also on degree of conversion - it ranges between ~145 and 200 kJ/mol.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA