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Kinetic analysis of nonisothermal degradation of acrylonitrile–butadiene/ethylene–propylene–diene rubber blends reinforced with carbon black filler
Author(s) -
Janković Bojan,
MarinovićCincović Milena,
Jovanović Vojislav,
SamaržijaJovanović Suzana,
Marković Gordana
Publication year - 2012
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22247
Subject(s) - materials science , carbon black , natural rubber , acrylonitrile , composite material , ethylene propylene rubber , thermogravimetric analysis , thermogravimetry , polymer , carbon fibers , diene , activation energy , chemical engineering , copolymer , organic chemistry , chemistry , composite number , engineering
The nonisothermal degradation process of acrylonitrile–butadiene/ethylene–propylene–diene rubber blends reinforced with carbon black filler was investigated with thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG), using the different calculation procedures. Using different isoconversional methods, it was found that the degradation of the 50 phr loaded carbon black in NBR/EPDM (80/20) blend represents the complex process, where exists the conversion region with a constant value of the apparent activation energy ( E a ). It was found that the degradation process of the carbon black‐loaded polymer blend under nitrogen atmosphere, can be described by the three‐(D3) dimensional diffusion mechanism. Good agreement was observed between the experimental and calculated differential (rate) conversion curves, for the investigated degradation process. It was established that the considered polymer blend which have high contents of the carbon black (50 phr carbon black), shows very strong self‐protective behavior (i.e., in the formation of a protective barrier). POLYM. COMPOS., 2012. © 2012 Society of Plastics Engineers