Low rate propylene slurry polymerization: kinetics and morphology

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

    Research output: Contribution to journalArticleAcademicpeer-review

    15 Citations (Scopus)

    Abstract

    '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
    Volume26
    Issue number14
    DOIs
    Publication statusPublished - 2006

    Keywords

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

    Cite this

    Pimplapure, M.S. ; Zheng, Xuejing ; Weickert, G. ; Loos, Joachim. / Low rate propylene slurry polymerization: kinetics and morphology. In: Macromolecular rapid communications. 2006 ; Vol. 26, No. 14. pp. 1155-1158.
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    abstract = "'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.",
    keywords = "Ziegler-Natta Polymerization, Low-yield prepolymerization, IR-58293, METIS-230177, poly(propylene) (PP)",
    author = "M.S. Pimplapure and Xuejing Zheng and G. Weickert and Joachim Loos",
    year = "2006",
    doi = "10.1002/marc.200500144",
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    Pimplapure, MS, Zheng, X, Weickert, G & Loos, J 2006, 'Low rate propylene slurry polymerization: kinetics and morphology', Macromolecular rapid communications, vol. 26, no. 14, pp. 1155-1158. https://doi.org/10.1002/marc.200500144

    Low rate propylene slurry polymerization: kinetics and morphology. / Pimplapure, M.S.; Zheng, Xuejing; Weickert, G.; Loos, Joachim.

    In: Macromolecular rapid communications, Vol. 26, No. 14, 2006, p. 1155-1158.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Low rate propylene slurry polymerization: kinetics and morphology

    AU - Pimplapure, M.S.

    AU - Zheng, Xuejing

    AU - Weickert, G.

    AU - Loos, Joachim

    PY - 2006

    Y1 - 2006

    N2 - '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.

    AB - '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.

    KW - Ziegler-Natta Polymerization

    KW - Low-yield prepolymerization

    KW - IR-58293

    KW - METIS-230177

    KW - poly(propylene) (PP)

    U2 - 10.1002/marc.200500144

    DO - 10.1002/marc.200500144

    M3 - Article

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    EP - 1158

    JO - Macromolecular rapid communications

    JF - Macromolecular rapid communications

    SN - 1022-1336

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