Highly exfoliated natural rubber/Clay composites by "propping-open procedure": The influence of fatty-acid chain length on exfoliation

Sandip Rooj, Amit Das, Klaus Werner Stöckelhuber, Uta Reuter, Gert Heinrich

    Research output: Contribution to journalArticleScientificpeer-review

    43 Citations (Scopus)

    Abstract

    A high degree of exfoliation of MMT in NR is achieved by using the so-called "propping-open approach" in which a stepwise expansion of the interlayer spacing of MMT takes place. The nanostructure is characterized by WAXD and TEM which indicate different extents of clay dispersion depending on the fatty-acid chain length. Curing kinetics of different nanocomposites is studied and interestingly low activation energies of the vulcanization process are observed in the case of NR/EMMT nanocomposites. The incorporation of EMMT dramatically affects composite properties whereas DMA indicates significant reduction of tan δ peak height and the tensile strength approximately doubles from 14 to 30 MPa with only 5 phr EMMT.

    Original languageEnglish
    Pages (from-to)369-383
    Number of pages15
    JournalMacromolecular Materials and Engineering
    Volume297
    Issue number4
    DOIs
    Publication statusPublished - Apr 2012
    Publication typeA1 Journal article-refereed

    Keywords

    • curing kinetics
    • exfoliation
    • Mooney-Rivlin equation
    • nanocomposites
    • propping-open approach

    ASJC Scopus subject areas

    • General Chemical Engineering
    • Organic Chemistry
    • Polymers and Plastics
    • Materials Chemistry

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