Pyrolysis of natural rubber-cellulose composites: isoconversional kinetic analysis based on thermogravimetric data
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F24%3A10254769" target="_blank" >RIV/61989100:27360/24:10254769 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/61989100:27730/24:10254769
Výsledek na webu
<a href="https://link.springer.com/article/10.1007/s10973-024-12933-y" target="_blank" >https://link.springer.com/article/10.1007/s10973-024-12933-y</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10973-024-12933-y" target="_blank" >10.1007/s10973-024-12933-y</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Pyrolysis of natural rubber-cellulose composites: isoconversional kinetic analysis based on thermogravimetric data
Popis výsledku v původním jazyce
Despite the current growing interest in rubber composites with natural organic fillers, there is a lack of kinetic analyses that describe the decomposition of these materials during pyrolysis. For this reason, the main objective of this study was the kinetic analysis and determination of formal kinetic parameters for the pyrolytic decomposition of NR-CEL composites with different cellulose content (0, 30, 45, and 55 phr). Thermogravimetric measurements were made at heating rates of 2, 4, 6, 8, 10, and 20 degrees C min-1 in the temperature range of 20-600 degrees C. First, Friedman and KAS model-free methods were applied. Therefore, model-based methods and the model-fitting procedure were used to find the optimal multi-step kinetic model. The proposed final model consists of two parallel processes, which are kinetically independent: A -> B -> C and D -> E -> F. For each step, a kinetic triplet was calculated: the apparent activation energy, the pre-exponential factor, and the kinetic parameters of the extended empirical Prout-Tompkins model. The master plots method was used to determine the kinetic decomposition mechanism of the individual steps. It was found that step A -> B has the shape of an nth-order model, step B -> C mainly follows the diffusion model, the mechanism of step D -> E transfers from a random scission kinetics model to an nth-order model with an increasing amount of CEL, and step E -> F obeys the chain scission mechanism.
Název v anglickém jazyce
Pyrolysis of natural rubber-cellulose composites: isoconversional kinetic analysis based on thermogravimetric data
Popis výsledku anglicky
Despite the current growing interest in rubber composites with natural organic fillers, there is a lack of kinetic analyses that describe the decomposition of these materials during pyrolysis. For this reason, the main objective of this study was the kinetic analysis and determination of formal kinetic parameters for the pyrolytic decomposition of NR-CEL composites with different cellulose content (0, 30, 45, and 55 phr). Thermogravimetric measurements were made at heating rates of 2, 4, 6, 8, 10, and 20 degrees C min-1 in the temperature range of 20-600 degrees C. First, Friedman and KAS model-free methods were applied. Therefore, model-based methods and the model-fitting procedure were used to find the optimal multi-step kinetic model. The proposed final model consists of two parallel processes, which are kinetically independent: A -> B -> C and D -> E -> F. For each step, a kinetic triplet was calculated: the apparent activation energy, the pre-exponential factor, and the kinetic parameters of the extended empirical Prout-Tompkins model. The master plots method was used to determine the kinetic decomposition mechanism of the individual steps. It was found that step A -> B has the shape of an nth-order model, step B -> C mainly follows the diffusion model, the mechanism of step D -> E transfers from a random scission kinetics model to an nth-order model with an increasing amount of CEL, and step E -> F obeys the chain scission mechanism.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20500 - Materials engineering
Návaznosti výsledku
Projekt
—
Návaznosti
S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2024
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of thermal analysis and calorimetry
ISSN
1388-6150
e-ISSN
1588-2926
Svazek periodika
149
Číslo periodika v rámci svazku
Neuveden
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
14
Strana od-do
3111-3124
Kód UT WoS článku
001173266500003
EID výsledku v databázi Scopus
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