Morphology and electrical conductivity of injection-molded polypropylene/carbon black composites with addition of high-density polyethylene

Hiroshi Yui, Guozhang Wu, Hironari Sano, Masao Sumita, Kuniki Kino

    Research output: Contribution to journalArticle

    117 Citations (Scopus)

    Abstract

    This work attempts to clarify the influence of carbon black (CB) addition on the microstructure of injection-molded high-density polyethylene (HDPE)/polypropylene (PP) blends and effect of shear-induced polymer deformation on the conductive network structure. We observed that HDPE molecules are strongly interacted with carbon surfaces and CB particles are selectively located in HDPE domains. Morphology of the injection-molded specimen consists of three parts, namely, CB-HDPE complex domain, free HDPE domain and PP domain. The volume and microstructure of the free HDPE domain are significantly influenced by HDPE and CB concentration, CB structure, and PP viscosity. We also confirmed that the CB particles are capable of self-assembly to form random conductive networks even under high shear rate within very short time. The morphological changes were finally correlated to the variation of electrical conductivity.

    Original languageEnglish
    Pages (from-to)3599-3608
    Number of pages10
    JournalPolymer
    Volume47
    Issue number10
    DOIs
    Publication statusPublished - 2006 May 3

    Fingerprint

    Soot
    Polypropylenes
    Polyethylene
    High density polyethylenes
    Carbon black
    Composite materials
    Microstructure
    Electric Conductivity
    Shear deformation
    Self assembly
    Polymers
    Carbon
    Viscosity
    Molecules

    Keywords

    • Carbon black
    • Conductive polymer composite
    • Injection molding

    ASJC Scopus subject areas

    • Organic Chemistry
    • Polymers and Plastics

    Cite this

    Morphology and electrical conductivity of injection-molded polypropylene/carbon black composites with addition of high-density polyethylene. / Yui, Hiroshi; Wu, Guozhang; Sano, Hironari; Sumita, Masao; Kino, Kuniki.

    In: Polymer, Vol. 47, No. 10, 03.05.2006, p. 3599-3608.

    Research output: Contribution to journalArticle

    Yui, Hiroshi ; Wu, Guozhang ; Sano, Hironari ; Sumita, Masao ; Kino, Kuniki. / Morphology and electrical conductivity of injection-molded polypropylene/carbon black composites with addition of high-density polyethylene. In: Polymer. 2006 ; Vol. 47, No. 10. pp. 3599-3608.
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