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Isothermal bulk polymerization ofp-alkylaryl methacrylates by DSC

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Abstract

The course and kinetics of free radical polymerization in bulk ofp-alkylphenyl methacrylates with AIBN initiator were studied by DSC, in the temperature range 348–373 K. The enthalpy of polymerization, the residual monomer content, as well as the overall reaction rate constants and the activation energies were determined. The similar values of the overall rate constants indicate that the relatively small alkyl substituents inp-position of the phenyl ring affect the polymerization rate to a very small, if any, extent.

Zusammenfassung

Mittels DSC wurden im Temperaturbereich 348–373 K Reaktionsweg und Kinetik der radikalischen Raumpolymerisation vonp-Alkylphenylmethacrylaten mit AIBN Initiator untersucht. Dabei wurden die Polymerisationsenthalpie, der Monomerrest-gehalt als auch die Geschwindigkeitskonstanten und die Aktivierungsenergien der Gesamt-reaktion bestimmt. Ähnliche Werte für die Gesamtgeschwindigkeitskonstanten weisen darauf hin, daß die relativ kleinen Alkylsubstituenten inp-Stellung des Phenylringes die Polymerisationsgeschwindigkeit nur in sehr kleinem Maße — wenn überhaupt — beeinflussen.

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Authors and Affiliations

  1. Faculty of Technology and Metallurgy, University of Beograd, Karnegijeva 4, 11000, Beograd, Yugoslavia

    J. M. Filipovic, D. M. Petrovic-Dakov, Lj. P. Vrhovac & J. S. Velickovic

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  1. J. M. Filipovic
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  2. D. M. Petrovic-Dakov
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  3. Lj. P. Vrhovac
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  4. J. S. Velickovic
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Filipovic, J.M., Petrovic-Dakov, D.M., Vrhovac, L.P. et al. Isothermal bulk polymerization ofp-alkylaryl methacrylates by DSC. Journal of Thermal Analysis 38, 709–713 (1992). https://doi.org/10.1007/BF01979400

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  • DOI: https://doi.org/10.1007/BF01979400

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