Structure of PP nanocomposites with edge-silated layered silicates

Sharad Kumar, K. Jayaraman

    Research output: ResearchConference contribution

    Abstract

    This study investigates effects of modifying the edges of organophilic layered silicates on the extent of exfoliation and micro structure in melt processed polypropylene nanocomposites. Montmorillonite with C-18 quaternary onium ions exchanged into the galleries was treated additionally with phenyl-trimethoxy silane and X-ray diffraction patterns on the silated clay confirmed that the silane was located at the clay edges. 5 wt% of this clay was compounded with 10 wt% maleated polypropylene PP-g-MA (acid number =23 and M w=22000) and with 85 wt% bulk PP. The organoclay with silane coupling at the edges led to higher exfoliation levels as compared to the unsilated organoclay. The nanocomposite specimens were extruded through a straight die as well as a converging profile die; with the latter die, extensional flow at uniform rates was obtained to a logarithmic tensile strain of 5. The extruded strands were evaluated by X-ray diffraction and transmission electron microscopy. Re-aggregation of the clay platelets was found to different extents in the extruded strands. The re-aggregation levels were reduced for the nanocomposites with the edge-functionalized clay particularly at higher residence times.

    LanguageEnglish (US)
    Title of host publicationSPE Automotive TPO Global Conference 2004 - Papers
    Pages179-195
    Number of pages17
    StatePublished - 2004
    EventSPE Automotive TPO Global Conference 2004 - Papers - Dearborn, MI, United States
    Duration: Oct 3 2004Oct 6 2004

    Other

    OtherSPE Automotive TPO Global Conference 2004 - Papers
    CountryUnited States
    CityDearborn, MI
    Period10/3/0410/6/04

    Profile

    Silicates
    Nanocomposites
    Clay
    Silanes
    Organoclay
    Polypropylenes
    Agglomeration
    X ray diffraction
    Tensile strain
    Platelets
    Clay minerals
    Diffraction patterns
    Transmission electron microscopy
    Microstructure
    Acids
    Ions

    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

    Kumar, S., & Jayaraman, K. (2004). Structure of PP nanocomposites with edge-silated layered silicates. In SPE Automotive TPO Global Conference 2004 - Papers (pp. 179-195)

    Structure of PP nanocomposites with edge-silated layered silicates. / Kumar, Sharad; Jayaraman, K.

    SPE Automotive TPO Global Conference 2004 - Papers. 2004. p. 179-195.

    Research output: ResearchConference contribution

    Kumar, S & Jayaraman, K 2004, Structure of PP nanocomposites with edge-silated layered silicates. in SPE Automotive TPO Global Conference 2004 - Papers. pp. 179-195, SPE Automotive TPO Global Conference 2004 - Papers, Dearborn, MI, United States, 10/3/04.
    Kumar S, Jayaraman K. Structure of PP nanocomposites with edge-silated layered silicates. In SPE Automotive TPO Global Conference 2004 - Papers. 2004. p. 179-195.
    Kumar, Sharad ; Jayaraman, K./ Structure of PP nanocomposites with edge-silated layered silicates. SPE Automotive TPO Global Conference 2004 - Papers. 2004. pp. 179-195
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