1991
DOI: 10.1002/app.1991.070420737
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Invariant kinetic parameters of polymer thermolysis. III. The influence of a fire‐retardant additive on polypropylene thermolysis

Abstract: SYNOPSISThe present paper analyzes the thermolysis gross-kinetics of polypropylene ( P P ) and a PP-based fire-resistant composition containing 10% of hexabrominecyclododecane ( HBCD ) as the fire-retardant additive. The kinetic parameters of thermolysis of an individual PP are calculated by the isoconversion method. The increasing dependence of the effective activation energy on the transformation degree has been established. This dependence is attributed to the competitive character of the processes of therm… Show more

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Cited by 22 publications
(7 citation statements)
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“…Reactions 2 and 4 can be assigned to char oxidation reactions. The values of activation energies found for the reactions are similar to other studies 32, 33…”
Section: Resultssupporting
confidence: 90%
“…Reactions 2 and 4 can be assigned to char oxidation reactions. The values of activation energies found for the reactions are similar to other studies 32, 33…”
Section: Resultssupporting
confidence: 90%
“…21 21 and also the effect of hexabromocyclododecane as a fire-retardant additive on polypropylene (PP) thermal degradation. 22 Wang and coworkers [23][24][25] systematically investigated the thermal oxidative degradation behavior of poly(ethylene terephthalate) and its blend with MMT nanocomposite. Very few studies on the thermal or thermo-oxidative degradation kinetics of the flameretarded PP with intumescent flame-retardants (IFRs), e.g., Neininger et al 26 used a mathematical model, i.e., simplified kinetic scheme, to predict the global kinetics of the thermal degradation of IFRs added in textile-reinforced composite.…”
Section: Introductionmentioning
confidence: 99%
“…Many researchers have investigated the thermal degradation kinetics of the nanocomposite material 21–25. Lesnikovich et al examined the kinetics of oxidative degradation of flame‐retardant polyesters [poly(ethylene terephthalate)]21 and also the effect of hexabromocyclododecane as a fire‐retardant additive on polypropylene (PP) thermal degradation 22. Wang and coworkers23–25 systematically investigated the thermal oxidative degradation behavior of poly(ethylene terephthalate) and its blend with MMT nanocomposite.…”
Section: Introductionmentioning
confidence: 99%
“…Dependencies ( 1) and ( 2 ) were obtained in our previous work.' It is seen from Figure 1 that unlike the monotonically increasing dependencies ( 1) and (2) characteristic parallel reactions, dependence (3 ) goes through the minimum in the region of transformation degree near 0.2. As mentioned above, the increasing character of dependencies ( 1 ) and ( 2 ) is attributed to the competition of two main processes proceeding at PP thermolysis: the oxidation-initiated destruction and pyrolysis.…”
Section: Methodsmentioning
confidence: 84%
“…It is seen from Figure 1 that unlike the monotonically increasing dependencies ( 1) and (2) characteristic parallel reactions, dependence (3 ) goes through the minimum in the region of transformation degree near 0.2. As mentioned above, the increasing character of dependencies ( 1 ) and ( 2 ) is attributed to the competition of two main processes proceeding at PP thermolysis: the oxidation-initiated destruction and pyrolysis. Likewise, we can, perhaps, explain the character of dependence ( 3 ) in the range of transformation degrees 0.2-0.9, where it is similar in shape and position (taking into account the uncertainty in activation energy calculating; see The difference in shape of the above dependencies is a source of useful information on the mechanism of the action of fire-retardant additives on the kinetics of PP thermolysis.…”
Section: Methodsmentioning
confidence: 84%