Abstract
AbstractTo achieve a selective localization of nanoparticles in multilayered two‐component polymer blends, an intentional two‐step process, first pre‐compounding and then co‐extruding, was employed to prepare multilayered high‐density polyethylene (HDPE)/polyethylene‐grafted maleic anhydride (PE‐g‐MAH)/organic montmorillonite (OMMT)‐polyamide 6 (PA6) nanocomposites. The dispersion of OMMT was evaluated by transmission electron microscopy (TEM) and X‐ray diffraction (XRD). The results showed that the localization of OMMT was tunable with different content of PE‐g‐MAH. By comparing the localization of OMMT in a single‐layered nanocomposite with that in the multilayered nanocomposites, as well as by theoretically calculating wetting coefficients of the multilayered nanocomposites, the migration mechanism of OMMT was revealed. As demonstrated by differential scanning calorimetry (DSC), transmission rate measurement and tensile test, the selective localization of OMMT in the multilayered nanocomposites could increase crystallinity degree of the two‐polymer components, enhancing oxygen barrier property and tensile strength of the nanocomposties.
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