Effect of Modified Nanoclays on the Mechanical Properties of Thermoplastics Polymer Nanocomoposites

N. Ouslimani, B. Kouini, K. Boumerdassi


Abstract: Nanocomposites based on polypropylene/polyamide66 (PP/PA66) nanoblends containing organophilicmontmorillonite (OMMT) and maleic anhydride grafted polypropylene (PP-g-MAH) were prepared by melt compounding method followed by injection molding. Two different types of nanoclayswere used in this work, i.e. DELLITE LVF (untreated): is a nano-clay deriving from a naturally occurring especially purified montmorillonite and DELLITE 67G (treated with a high content of quaternary ammonium salt (dimethyl dehydrogenated tallow ammonium). The rheological results revealed a drastic reduction in MFI with a levelling off at 5 wt.% for the nanoblends containing treated clay. The impact properties of PP/PA66 modified nanoblends were improved significantly in the presence of treated nanoclay. The morphology of the nanocomposites was studied using the XR diffraction (XRD). ­

XRD results revealed the formation of nanoblends as the nanoclay was intercalated and exfoliated.

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