Editing Thermogravimetric analysis (section)

===Thermogravimetric kinetics===

Thermogravimetric kinetics may be explored for insight into the reaction mechanisms of thermal (catalytic or non-catalytic) decomposition involved in the [[pyrolysis]] and [[combustion]] processes of different materials.<ref>{{cite journal|last1=Reyes-Labarta|first1=J.A.|last2=Marcilla|first2=A.|title=Thermal Treatment and Degradation of Crosslinked Ethylene Vinyl Acetate-Polyethylene-Azodicarbonamide-ZnO Foams. Complete Kinetic Modelling and Analysis|journal=Industrial & Engineering Chemistry Research|date=2012|volume=51|issue=28|pages=9515–9530|doi=10.1021/ie3006935}}</ref><ref>{{cite journal|last1=Reyes-Labarta|first1=J.A.|last2=Marcilla|first2=A.|title=Kinetic Study of the Decompositions Involved in the Thermal Degradation of Commercial Azodicarbonamide|journal=Journal of Applied Polymer Science|date=2008|volume=107|issue=1|pages=339–346|doi=10.1002/app.26922|hdl=10045/24682|url=https://rua.ua.es/dspace/bitstream/10045/24682/1/Proof_APP_2006_08_2292_TGA_ADC.pdf|hdl-access=free|access-date=2022-02-24|archive-date=2021-05-01|archive-url=https://web.archive.org/web/20210501050709/https://rua.ua.es/dspace/bitstream/10045/24682/1/Proof_APP_2006_08_2292_TGA_ADC.pdf|url-status=live}}</ref><ref>{{cite journal|last1=Marcilla|first1=A.|last2=Gómez|first2=A.|last3=Reyes|first3=J.A.|title=MCM-41 Catalytic Pyrolysis of Ethylene-Vinyl Acetate Copolymers. Kinetic Model|journal=Polymer|date=2001|volume=42|issue=19|pages=8103–8111|doi=10.1016/S0032-3861(01)00277-4}}</ref><ref>{{cite journal|last1=Marcilla|first1=A.|last2=Gómez|first2=A.|last3=Reyes-Labarta|first3=J.A.|last4=Giner|first4=A.|title=Catalytic pyrolysis of polypropylene using MCM-41. Kinetic model|journal=Polymer Degradation and Stability|date=2003|volume=80|issue=2|pages=233–240|doi=10.1016/S0141-3910(02)00403-2}}</ref><ref>{{cite journal|last1=Marcilla|first1=A.|last2=Gómez|first2=A.|last3=Reyes-Labarta|first3=J.A.|last4=Giner|first4=A.|last5=Hernández|first5=F.|title=Kinetic study of polypropylene pyrolysis using ZSM-5 and an equilibrium fluid catalytic cracking catalyst|journal=Journal of Analytical and Applied Pyrolysis|date=2003|volume=68-63|pages=467–480|doi=10.1016/S0165-2370(03)00036-6|bibcode=2003JAAP...68..467M }}</ref><ref>{{cite journal|last1=Conesa|first1=J.A.|last2=Caballero|first2=J.A.|last3=Reyes-Labarta|first3=J.A.|title=Artificial Neural Network for Modelling Thermal Decompositions|journal=Journal of Analytical and Applied Pyrolysis|date=2004|volume=71|issue=1 |pages=343–352|doi=10.1016/S0165-2370(03)00093-7|bibcode=2004JAAP...71..343C }}</ref><ref>{{cite journal|last1=Reyes|first1=J.A.|last2=Conesa|first2=J.A.|last3=Marcilla|first3=A.|title=Pyrolysis and combustion of polycoated cartons recycling. kinetic model and ms analysis|journal=Journal of Analytical and Applied Pyrolysis|date=2001|volume=58-59|pages=747–763|doi=10.1016/S0165-2370(00)00123-6}}</ref>

Activation energies of the decomposition process can be calculated using Kissinger method.<ref>{{Cite journal|last1=Janeta|first1=Mateusz|last2=Szafert|first2=Sławomir|date=2017-10-01|title=Synthesis, characterization and thermal properties of T8 type amido-POSS with p-halophenyl end-group|journal=Journal of Organometallic Chemistry|series=Organometallic Chemistry: from Stereochemistry to Catalysis to Nanochemistry honoring Professor John Gladysz's 65 birthday|volume=847|issue=Supplement C|pages=173–183|doi=10.1016/j.jorganchem.2017.05.044}}</ref>

Though a constant heating rate is more common, a constant mass loss rate can illuminate specific reaction kinetics. For example, the kinetic parameters of the [[carbonization]] of polyvinyl butyral were found using a constant mass loss rate of 0.2 wt %/min.<ref name=ref2>{{cite journal | title = Carbonization of polymeric nonwoven materials | journal = [[Thermochimica Acta]] | year = 2009 | volume = 486 | issue = 1–2 | pages = 66–70 | doi = 10.1016/j.tca.2008.12.020 | author1 = Tikhonov, N. A. | author2 = Arkhangelsky, I. V. | author3 = Belyaev, S. S. | author4 = Matveev, A. T.| bibcode = 2009TcAc..486...66T }}</ref>