Reaction calorimetry in slurry type chain polymerizations

M. Lahti*, Jukka Seppälä, A. Avela

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)


    One of the key issues of this study was to use the calorimeter design knowledge gathered from suspension polymerization applications when constructing a calorimeter suitable also for studying Ziegler-Natta polymerizations. Special features of Ziegler-Natta and styrene suspension polymerizations were presented in order to construct a polymerization calorimeter which is suitable for the characterization of both polymerizations. The instrumentation of the reaction calorimeter, which is designed for the investigation of two different kinds of polymerizations is more complicated than for the calorimeter which is suitable for only one kind of polymerization. The operation and the maintenance suffers somewhat from the complicated nature of the calorimeter but the problems can be avoided with a proper design. The reaction calorimeter is a very useful tool in the determination of the change of the heat transfer properties and the change of the viscosity. It is also a very effective apparatus in the determination of the polymerization rate. All these determinations are done during a polymerization. The equations and the typical results were presented in this study to show how the calorimeter is used in styrene suspension polymerization with the particular stabilation system.

    Original languageEnglish
    Pages (from-to)1-45
    Number of pages45
    JournalActa Polytechnica Scandinavica, Chemical Technology and Metallurgy Series
    Issue numberCh.215
    Publication statusPublished - 1993
    MoE publication typeA1 Journal article-refereed


    • polymerization
    • reaction calorimetry


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