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Thermal studies of metal poly(vinyl acetates). IX

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Abstract

Metal poly(vinyl acetates) polymers were obtained by radical polymerization with azodiisobutyronitrile. The thermal stabilities of the metal polymers (M-PVAC) have been studied by thermogravimetry (TG) 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 polymers degrade mainly in a single step with a very small second step, probably via a complex reaction. The kinetic data thus obtained show that the thermostabilities decrease in the order: Sb-PVAc∼Ge-PVAc>Bi-PVAc∼Cd-PCAc>Ag-PVAc∼PVAc>Zn-PVAc> Au-PVAc>In-PVAc>Sn-PVAc>Ga-PVAc>Pd-PVAc.

Again, the thermal stability is dependent upon the metal incorporated in the backbone polymer. They loose weight after 320°C. The order of reaction from the thermal decomposition of these metal polymers was found to be −0.5 for the first step and 0 for the second. The pre-exponential factor, the reaction order and the activation energy of the decomposition for metal (PVAc) have been determined in most of them.

Zusammenfassung

Metallpoly(vinylacetat)polymere werden durch radikalische Polymerisation mit Azodiisobutyronitril erhalten. Mittels TG wurde die thermische Stabilität der Metallpolymere (M-PVAc) im Temperaturbereich von 25 bis 550°C in Stickstoffstrom untersucht. Die Zersetzungstemperatur wurde aus dem Maximum der ersten Ableitung der TG-Kurve ermittelt. Die kinetischen Parameter der thermischen Zersetzung wurden mittels der Arrhenius’schen Gleichung ermittelt. All diese Polymere zersetzen sich in erster Linie in einem einzelnen Schritt und einem sehr kleinen zweiten Schritt, wahrscheinlich über eine Komplexreaktion. Anhand der kinetischen Daten nimmt die thermische Stabilität in folgender Reihenfolge ab: Sb-PVAc∼Ge-PVAc-Bi-PVAc∼Cd-PVAc>Ag-PVAc∼PVAc>Zn-PVAc>Au-PVAc>In-PVAc>Sn-PVAc> Ga-PVAc>Pd-PVAc.

Die thermische Stabilität hängt von dem im Hauptpolymer integrierten Metall ab. Gewichtsverlust tritt ab 320°C ein. Die Reaktionsordnung in der thermischen Zersetzung dieser Metallpolymere betrug −0,5 für den ersten und 0 für den zweiten Schritt. In den meisten Fällen wurden präexponentieller Faktor, Reaktionsordnung und Aktivierungsenergie der Zersetzung von Metall-PVAc bestimmt.

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References

  1. J. Zsakó and J. Zsakó, Jr, J. Thermal Anal., 19 (1980) 333.

    Article  Google Scholar 

  2. L. Reich and S. S. Stivala, Thermochim. Acta, 73 (1984) 165.

    Article  CAS  Google Scholar 

  3. J. P. Eldey, Thermochim. Acta, 95 (1985) 41.

    Article  Google Scholar 

  4. F. Skvara and J. Šestak, J. Thermal Anal. 8 (1975) 477.

    Article  CAS  Google Scholar 

  5. R. H. Still, N. Grassie (Ed.), Development in Polymer Degradation, Vol. I, Applied Science, London 1977, p. 1.

    Google Scholar 

  6. G. Cárdenas T., C. Retamal C. and K. J. Klabunde, Thermochim. Acta, 176 (1991) 233.

    Article  Google Scholar 

  7. G. Cárdenas T., C. Retamal C. and K. J. Klabunde, J. Appl. Polym. Sci. Appl. Symp., 49 (1991) 15.

    Article  Google Scholar 

  8. G. Cárdenas T., C. Retamal C. and L. H. Tagle, Thermochim. Acta 168 (1991) 221.

    Google Scholar 

  9. G. Cárdenas T. and L. H. Tagle D., Thermochim. Acta 200 (1992) 361.

    Article  Google Scholar 

  10. G. Cárdenas T. and P. B. Shevlin, Bol. Soc. Chil. Quím., 32 (1987) 111.

    Google Scholar 

  11. C. Muńoz D., Licenciado Thesis, University of Concepción (Chile) Dec. 1992.

  12. G. Cárdenas T. and C. Muńoz D., Polymer Bull., Macromol. Chemie Rap. Comun., 194 (1993) 3377.

    Google Scholar 

  13. K. J. Klabunde, J. Habdas and G. Cárdenas T., Chem. Mater., 1 (1989) 481.

    Article  CAS  Google Scholar 

  14. G. Cárdenas T., C. Retamal C. and K. J. Klabunde, Polymer Bull., 25 (1991) 315.

    Article  Google Scholar 

  15. E. S. Freeman and B. Carroll, J. Phys. Chem. 621 (1958) 394.

    Article  Google Scholar 

  16. S. Ma, G. Juang and J. O. Hill, Thermochim. Acta, 184 (1991) 131.

    Article  Google Scholar 

Download references

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Authors and Affiliations

  1. Departamento de Polímeros, Facultad de Ciencias Químicas, Casilla 3-C, Correo 3, Concepción, Chile

    G. Cárdenas T. & C. Muńoz D.

  2. Departamento de Química Orgánica, Facultad de Química, Pontificia Universidad Católica de Chile, Casilla 306, Santiago, Chile

    L. H. Tagle D.

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  1. G. Cárdenas T.
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  2. C. Muńoz D.
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  3. L. H. Tagle D.
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Cárdenas T., G., Muńoz D., C. & Tagle D., L.H. Thermal studies of metal poly(vinyl acetates). IX. Journal of Thermal Analysis 44, 123–132 (1995). https://doi.org/10.1007/BF02547141

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  • DOI: https://doi.org/10.1007/BF02547141

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