Wahit, Mat Uzir
(2006)
Rubber Toughened Polyamide 6/
Polypropylene Nanocomposites:
Mechanical, Thermal And
Morphological Properties.
PhD thesis, Perpustakaan Hamzah Sendut.
Abstract
Rubber-toughened nanocomposites (RTNC) consisting series of
compatibilized polyamide 6 / polypropylene (PA6/PP) blends, of composition 100/0,
70/30, 50/50, 30/70 and 0/100, polyethylene-octene elastomer (POE) and organophilic
modified montmorillonite (organoclay) were produced by melt compounding followed by
injection moulding. Polypropylene grafted maleic anhyride (PPgMA) was used as
compatibilizer. Subsequently, for PA6/PP (70/30), the POE and organoclay loading was varied between 5 and 20 wt% and 2-6 wt%, respectively. For the optimum
particles dispersed in the PA6 matrix, was characterized by scanning electron
of a formulation, four different types of elastomer were incorporated into the blends i.e.
ethylene-octene elastomer (POE), ethylene-propylene elastomer (EPR), maleated POE
(POEgMAH) and maleated EPR (EPRgMAH). For the selected formulation, the
nanocomposites were also prepared through different mixing sequence of melt
intercalation i.e. direct, two times and two steps method.
The mechanical properties were studied through tensile, flexural, Izod impact
and fracture toughness testing. The morphology, essentially comprised of PP and POE
microscopy (SEM). Wide angle X-ray diffraction (XRD) was used to characterize the
formation of the nanocomposites. The thermal properties were characterized by using
differential scanning calorimeter (DSC) and thermogravimetry analysis (TGA). The
dynamic mechanical were analyzed by using dynamic mechanical thermal analyzer
(DMTA).
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