Structure of PP nanocomposites with edge-silated layered silicates

Sharad Kumar, K. Jayaraman

    Research output: Chapter in Book/Report/Conference proceedingConference 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.

    Original 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

    Other

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

    Profile

    Clay
    Nanocomposites
    Silanes
    Organoclay
    Silicates
    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: Chapter in Book/Report/Conference proceedingConference 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, 3-6 October.
    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. p. 179-195.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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