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- W2320971700 abstract "The pyrolysis of polystyrene, studied by isothermal thermogravimetry in the temperature range 300–400°C, obeys the kinetic law dα/dτ = k(1 - α)[1 - α)2b]12 or dα/dτ = k(1 - α)tanh β, expressions in which b depends on temperature and (cosh β)13 = 1 - α.In order to establish the validity of this law in the very large range 0.10 < α < 0.95, it was assumed that the pyrolysis is carried out in three steps: random initiation, depolymerization and termination by disproportionation or combination. In the kinetic expression the term tanh β is proportional to the concentration of radicals and represents the setting up of the steady state. The activation energies obtained for every step agree very well with those given in the literature, whereas the apparent activation energy of the global mechanism was found to be about 43 kcal mol−1." @default.
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- W2320971700 date "1980-05-01" @default.
- W2320971700 modified "2023-09-29" @default.
- W2320971700 title "Study of the pyrolysis of polystyrenes" @default.
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- W2320971700 doi "https://doi.org/10.1016/0165-2370(80)80014-3" @default.
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