A two-step process was used to prepare PP/MAPP/C15A/MWNT ternary nanocomposites system. The effect of the addition of MWNT on the delamination of clay layers in the polymer matrix has been studied through XRD. The similar crystallinity level was noticed after the addition of clay and MWNT together in the PP matrix through XRD. Higher mechanical properties of the ternary nanocomposites system were noticed than neat PP and its binary nanocomposites systems. Differential scanning calorimeter (DSC) technique was utilized to investigate the effect of both nanofillers on crystallization temperature ( ). And a shift in towards higher temperature was noticed in all the nanocomposites. Thermogravimetric analysis revealed an improved thermal stability of the ternary nanocomposites system. The dynamic mechanical response of PP and its binary and ternary nanocomposite systems was evaluated. The dispersion of the nanoparticles was investigated employing transmission electron microscopy (TEM). The combined effect of clay and MWNT on the properties of PP was investigated and summarized. 1. Introduction Polymers, reinforced with nanoscaled fillers, developed an advanced multifunctional material with improved properties which can be used in many fields ranging from microelectronics to aerospace. And because of good balance between properties and cost, low density, and easy moldability, polypropylene is the chosen material among all polymers [1]. In case of PP nanocomposites, maleic anhydride grafted PP has been proved to enhance the compatibility between PP and fillers [2]. Nanoscale fillers are also important in improving mechanical and other properties along with changes in crystallization behaviour [3]. Recently polymer layered silicate nanocomposites have attracted intense attention of industry and academicians for achieving various excellent properties including flame retarding characteristics for polymer due to its excellent barrier effect [4, 5]. Studies also have been reporting that MWNT, because of their exceptional mechanical and thermal properties, has become attractive class of inclusion [6]. The MWNT forms networked layers in polymer matrix, shielding the polymer from external radiation and flame. It also acts as excellent thermal insulation. The mechanical properties of MWNT are exciting, since they are considered as the ultimate carbon material ever made. Combination of these two fillers nanoclay and MWNT has attracted much of the current interest owing to their extended structure allowing for clay nanolayer and carbon nanotubes network assemblies.
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