Compatibilization of PP/PBT and PP/PA6 blends with a new oxazoline-functionalized polypropylene

Pirjo Hietaoja*, Markku Heino, Tommi Vainio, Jukka Seppälä

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    17 Citations (Scopus)


    Aim of this work was to study the effectiveness of a novel oxazoline-functionalized polypropylene as a compatibilizer for PP/PBT and PP/PA6 blends. This polypropylenebased compatibilizer mixes well with the polypropylene and is capable of reacting with the carboxylic and amine end groups of PBT and PA6. Significant improvements in blend toughness were achieved without reduction in strength and stiffness. These effects were related to stabilized morphology of finely dispersed minor phase well attached to the matrix. The enhanced interfacial interactions between the two phases, in particular at high PBT content were evidenced by increased melt viscosity.

    Original languageEnglish
    Pages (from-to)353-359
    Number of pages7
    JournalPolymer Bulletin
    Issue number3
    Publication statusPublished - 1996
    MoE publication typeA1 Journal article-refereed


    • compatibilization
    • oxazoline-functionalized polypropylene
    • PP/PA6 blends
    • PP/PBT blends


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