Grafting of unsaturateds acids and silanes to ethylene polymers: a kinetic model

Kshama Motha*, Jukka Seppälä, Christer Bergström

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    12 Citations (Scopus)


    A general kinetic model was developed to simulate the grafting of monomers such as unsaturated carboxylic acids and silanes to ethylene polymers. The polymers considered were ethylene-co-vinyl acetate (EVA), ethylene-co-butyl acrylate (EBA), and low-density polyethylene (LDPE). Grafting was assumed to proceed by a free-radical mechanism involving chain transfer. Organic peroxides having a strong tendency for hydrogen abstraction were selected as the source of primary radicals. The model simulated the grafting reaction as taking place in a single screw extruder. The model is able to predict the extent of grafting in terms of predefined parameters. Comparison of model predictions with available experimental data showed slight deviations, the possible causes of which are discussed.

    Original languageEnglish
    Pages (from-to)1579-1587
    Number of pages9
    JournalPolymer Engineering and Science
    Issue number22
    Publication statusPublished - Nov 1989
    MoE publication typeA1 Journal article-refereed

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