The comparative kinetic analysis of non-isothermal degradation process of acrylonitrile-butadiene/ethylene-propylene-diene rubber blends reinforced with carbon black/silica fillers. Part II
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Autori
Janković, Bojan Ž.Marinović-Cincović, Milena
Jovanović, Vojislav
Samaržija-Jovanović, Suzana
Marković, Gordana
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The non-isothermal degradation processes of acrylonitrile-butadiene/ethylene-propylene-diene rubber blends reinforced with carbon black/silica fillers were investigated with thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG), using the different calculation procedures. Using differential and integral isoconversional methods, it was found that the NBR/EPDM 70 phr SiO2, NBR/EPDM 35 phr carbon black/35 phr SiO2 and NBR/EPDM 50 phr carbon black/20 phr SiO2 degradations represent complex processes, with existing conversion regions of constant apparent activation energy (E-a). It was found that the degradation process of the NBR/EPDM 70 phr SiO2 under nitrogen atmosphere can be described by the one and a half order (n = 3/2; F3/2) kinetics, while the degradation of the NBR/EPDM 35 phr carbon black/35 phr SiO2 and NBR/EPDM 50 phr carbon black/20 phr SiO2 can be described with two- (D2) and three- (D3) dimensional diffusion mechanisms. For all investigated systems, an artif...icial compensation effect (art-CE) was found. Good agreement was observed between the experimental and calculated conversion curves, for all considered degradation processes. It was found that the sample of the polymer blend, which contains the highest carbon black content (50 phr carbon black), shows the greatest self-protective behavior. (C) 2012 Elsevier B.V. All rights reserved.
Ključne reči:
NBR/EPDM blend / Silica / Carbon black / Apparent activation energy / Self-protective behaviorIzvor:
Thermochimica Acta, 2012, 543, 304-312Finansiranje / projekti:
- Dinamika nelinearnih fizičkohemijskih i biohemijskih sistema sa modeliranjem i predviđanjem njihovih ponašanja pod neravnotežnim uslovima (RS-MESTD-Basic Research (BR or ON)-172015)
- Uticaj veličine, oblika i strukture nanočestica na njihova svojstva i svojstva nanokompozita (RS-MESTD-Basic Research (BR or ON)-172056)
- Višeskalno strukturiranje polimernih nanokompozita i funkcionalnih materijala primenom različitih prekursora (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45022)
DOI: 10.1016/j.tca.2012.05.028
ISSN: 0040-6031
WoS: 000307419500042
Scopus: 2-s2.0-84863720476
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Institucija/grupa
VinčaTY - JOUR AU - Janković, Bojan Ž. AU - Marinović-Cincović, Milena AU - Jovanović, Vojislav AU - Samaržija-Jovanović, Suzana AU - Marković, Gordana PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4990 AB - The non-isothermal degradation processes of acrylonitrile-butadiene/ethylene-propylene-diene rubber blends reinforced with carbon black/silica fillers were investigated with thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG), using the different calculation procedures. Using differential and integral isoconversional methods, it was found that the NBR/EPDM 70 phr SiO2, NBR/EPDM 35 phr carbon black/35 phr SiO2 and NBR/EPDM 50 phr carbon black/20 phr SiO2 degradations represent complex processes, with existing conversion regions of constant apparent activation energy (E-a). It was found that the degradation process of the NBR/EPDM 70 phr SiO2 under nitrogen atmosphere can be described by the one and a half order (n = 3/2; F3/2) kinetics, while the degradation of the NBR/EPDM 35 phr carbon black/35 phr SiO2 and NBR/EPDM 50 phr carbon black/20 phr SiO2 can be described with two- (D2) and three- (D3) dimensional diffusion mechanisms. For all investigated systems, an artificial compensation effect (art-CE) was found. Good agreement was observed between the experimental and calculated conversion curves, for all considered degradation processes. It was found that the sample of the polymer blend, which contains the highest carbon black content (50 phr carbon black), shows the greatest self-protective behavior. (C) 2012 Elsevier B.V. All rights reserved. T2 - Thermochimica Acta T1 - The comparative kinetic analysis of non-isothermal degradation process of acrylonitrile-butadiene/ethylene-propylene-diene rubber blends reinforced with carbon black/silica fillers. Part II VL - 543 SP - 304 EP - 312 DO - 10.1016/j.tca.2012.05.028 ER -
@article{ author = "Janković, Bojan Ž. and Marinović-Cincović, Milena and Jovanović, Vojislav and Samaržija-Jovanović, Suzana and Marković, Gordana", year = "2012", abstract = "The non-isothermal degradation processes of acrylonitrile-butadiene/ethylene-propylene-diene rubber blends reinforced with carbon black/silica fillers were investigated with thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG), using the different calculation procedures. Using differential and integral isoconversional methods, it was found that the NBR/EPDM 70 phr SiO2, NBR/EPDM 35 phr carbon black/35 phr SiO2 and NBR/EPDM 50 phr carbon black/20 phr SiO2 degradations represent complex processes, with existing conversion regions of constant apparent activation energy (E-a). It was found that the degradation process of the NBR/EPDM 70 phr SiO2 under nitrogen atmosphere can be described by the one and a half order (n = 3/2; F3/2) kinetics, while the degradation of the NBR/EPDM 35 phr carbon black/35 phr SiO2 and NBR/EPDM 50 phr carbon black/20 phr SiO2 can be described with two- (D2) and three- (D3) dimensional diffusion mechanisms. For all investigated systems, an artificial compensation effect (art-CE) was found. Good agreement was observed between the experimental and calculated conversion curves, for all considered degradation processes. It was found that the sample of the polymer blend, which contains the highest carbon black content (50 phr carbon black), shows the greatest self-protective behavior. (C) 2012 Elsevier B.V. All rights reserved.", journal = "Thermochimica Acta", title = "The comparative kinetic analysis of non-isothermal degradation process of acrylonitrile-butadiene/ethylene-propylene-diene rubber blends reinforced with carbon black/silica fillers. Part II", volume = "543", pages = "304-312", doi = "10.1016/j.tca.2012.05.028" }
Janković, B. Ž., Marinović-Cincović, M., Jovanović, V., Samaržija-Jovanović, S.,& Marković, G.. (2012). The comparative kinetic analysis of non-isothermal degradation process of acrylonitrile-butadiene/ethylene-propylene-diene rubber blends reinforced with carbon black/silica fillers. Part II. in Thermochimica Acta, 543, 304-312. https://doi.org/10.1016/j.tca.2012.05.028
Janković BŽ, Marinović-Cincović M, Jovanović V, Samaržija-Jovanović S, Marković G. The comparative kinetic analysis of non-isothermal degradation process of acrylonitrile-butadiene/ethylene-propylene-diene rubber blends reinforced with carbon black/silica fillers. Part II. in Thermochimica Acta. 2012;543:304-312. doi:10.1016/j.tca.2012.05.028 .
Janković, Bojan Ž., Marinović-Cincović, Milena, Jovanović, Vojislav, Samaržija-Jovanović, Suzana, Marković, Gordana, "The comparative kinetic analysis of non-isothermal degradation process of acrylonitrile-butadiene/ethylene-propylene-diene rubber blends reinforced with carbon black/silica fillers. Part II" in Thermochimica Acta, 543 (2012):304-312, https://doi.org/10.1016/j.tca.2012.05.028 . .