The kinetic and thermodynamic analyses of non-isothermal degradation process of acrylonitrile-butadiene and ethylene-propylene-diene rubbers
Нема приказа
Аутори
Marinović-Cincović, MilenaJanković, Bojan Ž.
Jovanović, Vojislav
Samaržija-Jovanović, Suzana
Marković, Gordana
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
The non-isothermal degradation processes of acrylonitrile-butadiene and ethylene-propylene-ethylidenenorbornene rubber compounds were investigated with thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG), using the different calculation procedures. It was found that the acrylonitrile-butadiene (NBR) and the ethylene-propylene-diene (EPDM) rubbers degradations represent the complex processes, where there are conversion regions with a constant value of the apparent activation energy (E-a). It was established that NBR and EPDM degradation under nitrogen atmosphere can be described by the one and a half order (n = 3/2) and the first order (n = 1) reaction kinetics, respectively. A linear dependence was observed between lnA and E-a, known as the kinetic compensation effect (KCE). The linear dependence was also established between the change of the entropy Delta S-not equal and E-a, for the formation of the activated complex from the reagents. These dependences are related... to assumption that the kinetic mechanisms of the non-isothermal degradation of the NBR and EPDM samples are very similar. (c) 2012 Elsevier Ltd. All rights reserved.
Кључне речи:
Polymer-matrix composites (PMCs) / Thermal properties / Numerical analysis / Thermal analysis / Apparent activation energyИзвор:
Composites: Part B: Engineering, 2013, 45, 1, 321-332Финансирање / пројекти:
- Материјали редуковане димензионалности за ефикасну апсорпцију светлости и конверзију енергије (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Вишескално структурирање полимерних нанокомпозита и функционалних материјала применом различитих прекурсора (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45022)
- Динамика нелинеарних физичкохемијских и биохемијских система са моделирањем и предвиђањем њихових понашања под неравнотежним условима (RS-MESTD-Basic Research (BR or ON)-172015)
DOI: 10.1016/j.compositesb.2012.08.006
ISSN: 1359-8368
WoS: 000314193200034
Scopus: 2-s2.0-84869492717
Колекције
Институција/група
VinčaTY - JOUR AU - Marinović-Cincović, Milena AU - Janković, Bojan Ž. AU - Jovanović, Vojislav AU - Samaržija-Jovanović, Suzana AU - Marković, Gordana PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5284 AB - The non-isothermal degradation processes of acrylonitrile-butadiene and ethylene-propylene-ethylidenenorbornene rubber compounds were investigated with thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG), using the different calculation procedures. It was found that the acrylonitrile-butadiene (NBR) and the ethylene-propylene-diene (EPDM) rubbers degradations represent the complex processes, where there are conversion regions with a constant value of the apparent activation energy (E-a). It was established that NBR and EPDM degradation under nitrogen atmosphere can be described by the one and a half order (n = 3/2) and the first order (n = 1) reaction kinetics, respectively. A linear dependence was observed between lnA and E-a, known as the kinetic compensation effect (KCE). The linear dependence was also established between the change of the entropy Delta S-not equal and E-a, for the formation of the activated complex from the reagents. These dependences are related to assumption that the kinetic mechanisms of the non-isothermal degradation of the NBR and EPDM samples are very similar. (c) 2012 Elsevier Ltd. All rights reserved. T2 - Composites: Part B: Engineering T1 - The kinetic and thermodynamic analyses of non-isothermal degradation process of acrylonitrile-butadiene and ethylene-propylene-diene rubbers VL - 45 IS - 1 SP - 321 EP - 332 DO - 10.1016/j.compositesb.2012.08.006 ER -
@article{ author = "Marinović-Cincović, Milena and Janković, Bojan Ž. and Jovanović, Vojislav and Samaržija-Jovanović, Suzana and Marković, Gordana", year = "2013", abstract = "The non-isothermal degradation processes of acrylonitrile-butadiene and ethylene-propylene-ethylidenenorbornene rubber compounds were investigated with thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG), using the different calculation procedures. It was found that the acrylonitrile-butadiene (NBR) and the ethylene-propylene-diene (EPDM) rubbers degradations represent the complex processes, where there are conversion regions with a constant value of the apparent activation energy (E-a). It was established that NBR and EPDM degradation under nitrogen atmosphere can be described by the one and a half order (n = 3/2) and the first order (n = 1) reaction kinetics, respectively. A linear dependence was observed between lnA and E-a, known as the kinetic compensation effect (KCE). The linear dependence was also established between the change of the entropy Delta S-not equal and E-a, for the formation of the activated complex from the reagents. These dependences are related to assumption that the kinetic mechanisms of the non-isothermal degradation of the NBR and EPDM samples are very similar. (c) 2012 Elsevier Ltd. All rights reserved.", journal = "Composites: Part B: Engineering", title = "The kinetic and thermodynamic analyses of non-isothermal degradation process of acrylonitrile-butadiene and ethylene-propylene-diene rubbers", volume = "45", number = "1", pages = "321-332", doi = "10.1016/j.compositesb.2012.08.006" }
Marinović-Cincović, M., Janković, B. Ž., Jovanović, V., Samaržija-Jovanović, S.,& Marković, G.. (2013). The kinetic and thermodynamic analyses of non-isothermal degradation process of acrylonitrile-butadiene and ethylene-propylene-diene rubbers. in Composites: Part B: Engineering, 45(1), 321-332. https://doi.org/10.1016/j.compositesb.2012.08.006
Marinović-Cincović M, Janković BŽ, Jovanović V, Samaržija-Jovanović S, Marković G. The kinetic and thermodynamic analyses of non-isothermal degradation process of acrylonitrile-butadiene and ethylene-propylene-diene rubbers. in Composites: Part B: Engineering. 2013;45(1):321-332. doi:10.1016/j.compositesb.2012.08.006 .
Marinović-Cincović, Milena, Janković, Bojan Ž., Jovanović, Vojislav, Samaržija-Jovanović, Suzana, Marković, Gordana, "The kinetic and thermodynamic analyses of non-isothermal degradation process of acrylonitrile-butadiene and ethylene-propylene-diene rubbers" in Composites: Part B: Engineering, 45, no. 1 (2013):321-332, https://doi.org/10.1016/j.compositesb.2012.08.006 . .