Thermal Analysis of Metal Poly(Styrene-co-Butylmethacrylate) Part XVII
Titel:
Thermal Analysis of Metal Poly(Styrene-co-Butylmethacrylate) Part XVII
Auteur:
Galo, Cardenas T. Marcela, Gonzalez G.
Verschenen in:
International journal of polymeric materials
Paginering:
Jaargang 34 (1996) nr. 3-4 pagina's 169-178
Jaar:
1996-12-01
Inhoud:
Metal poly(styrene-co-butylmethacrylate)s copolymers were obtained by radical copolymerization with benzoyl peroxide (BPO). The monomers were cocondensed with several metals: Pd, Au, Cu, Ag, In, Ge, Ga, Sn, Sb, Zn, Cd and Bi at 77K. After the warming process, metal comonomer colloids can be obtained. The colloids were polymerized with BPO at 65°C for 3 h. The thermal stabilities of these metals have been studied by thermogravimetry between 25 and 550°C under nitrogen flow. The decomposition temperature was obtained from the maximum of the first derivative from TG curve. The kinetic parameters of the thermal decomposition were determined by the Arrhenius equation. All these copolymers degrade in one stage. The kinetic data thus obtained show the thermostabilities decrease in the order: Ga-SBMA>Ag-SBMA>Au-SBMA>In-SBMA>Ge-SBMA>Zn-SBMA>Sn-SBMA>Bi-SBMA>Cd-SBMA> Pd-SBMA>Cu-SBMA>Sb-SBMA. The thermal stability is strongly related to the metal cluster incorporated in the copolymers. The decomposition reaction order is zero in all the copolymers. The pre-exponential factor, the activation energy, the reaction order and the decomposition temperature for all the metal copolymers have been determined.
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