Compatibilization and toughening of immiscible ternary blends of polyamide 6, polypropylene (or a propylene-Ethylene copolymer), and polystyrene

Yan Li, Don Wan, Jia Min Zhang, Xu Ming Xie

    Research output: Contribution to journalArticle

    18 Citations (Scopus)

    Abstract

    In this work, typical ternary blends of three versatile polymers-polyamide 6, a propylene-ethylene copolymer (co-PP), and polystyrene-were studied. As a compatibilizer, co-PP with randomly dispersed minor ethylene units was multimonomer-melt-grafted in the presence of maleic anhydride, styrene, and dicumyl peroxide. The influence of the ethylene content in co-PP and the blend composition on the performance was investigated. Scanning electron microscopy images showed an obvious decrease in the droplet size of the dispersed phase with increases in the compatibilizer content and number of ethylene units in co-PP. Peaks of tan δ/temperature curves approaching the glass-transition temperatures of the components were observed with dynamic mechanical thermal analysis. The improved mechanical properties implied good compatibility of the components in the blends. Significant toughening was achieved when the concentration of co-PP was increased from 15 to 25 wt %: the elongation at break of the compatibilized blends increased dozens of times in comparison with the elongation at break of the uncompatibilized blends. The introduction of the multimonomer-melt-grafted co-PP was shown to be an effective approach for improving immiscible multipolymer blends and to have practical potential.

    Original languageEnglish
    Pages (from-to)1652-1658
    Number of pages7
    JournalJournal of Applied Polymer Science
    Volume119
    Issue number3
    DOIs
    Publication statusPublished - 2011 Feb 5

    Keywords

    • blends
    • compatibilization
    • mechanical properties

    ASJC Scopus subject areas

    • Chemistry(all)
    • Surfaces, Coatings and Films
    • Polymers and Plastics
    • Materials Chemistry

    Fingerprint Dive into the research topics of 'Compatibilization and toughening of immiscible ternary blends of polyamide 6, polypropylene (or a propylene-Ethylene copolymer), and polystyrene'. Together they form a unique fingerprint.

  • Cite this