Use of oxazoline functionalized polyolefins and elastomers as compatibilizers for thermoplastic blends

C. Vocke, U. Anttila, M. Heino, P. Hietaoja, J. Seppälä*

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    39 Citations (Scopus)


    Oxazoline functionalized polypropylene, polyethylene, ethylene propylene copolymer (E/P), and styrene ethylene/butylene styrene copolymer (SEBS) were studied as compatibilizers in blends of polyolefins with polyesters and polyamides. The blends investigated were polypropylene/polyamide 6, polypropylene/polybutylene terephtalate, and polyethylene/polyamide 6, with engineering thermoplastic contents of 30 wt %. The blends were prepared in a twin-screw midiextruder, and injection molded with a mini-injection molding machine. The effect of compatibilizing on the morphology and mechanical properties of the blends was of interest. Compatibilization substantially improved the toughness of all tested blends. Their strength and stiffness remained at the level of the binary blends when polypropylene or polyethylene based compatibilizers were used, but slightly decreased with other compatibilizers. Morphological studies showed that the particle size was reduced, and the adhesion of the dispersed phase to the matrix improved by compatibilization. The effect of unfunctionalized polyethylene, polypropylene, E/P, and SEBS was also studied to compare the compatibilizers with them. O 1996 John Wiley & Sons, Inc.

    Original languageEnglish
    Pages (from-to)1923-1930
    Number of pages8
    JournalJournal of Applied Polymer Science
    Issue number10
    Publication statusPublished - 1998
    MoE publication typeA1 Journal article-refereed


    • compatibilization
    • oxazoline
    • polymer blend
    • reactive extrusion


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