Low rate propylene slurry polymerization: kinetics and morphology

M.S. Pimplapure, Xuejing Zheng, G. Weickert, Joachim Loos

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    'True' initial polymerization rates can be calculated from the adiabatic temperature rise under isoperibolic conditions. They are much higher than initial polymerization rates measured by standard mass flow meter methods under quasi-steady-state conditions. These high initial rates are followed by a fast apparent deactivation (attenuation) until a constant (plateau) activity is reached at low polymerization yields of 2-3 g PP · (g catalyst)-1 caused by an increasing degree of encapsulation of active sites. Mass transfer limitations are not observed. Cross sectional SEM images of the polymer samples support these kinetic findings.
    Original languageUndefined
    Pages (from-to)1155-1158
    Number of pages4
    JournalMacromolecular rapid communications
    Issue number14
    Publication statusPublished - 2006


    • Ziegler-Natta Polymerization
    • Low-yield prepolymerization
    • IR-58293
    • METIS-230177
    • poly(propylene) (PP)

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