Different types of homopolymer polypropylene (high and small molar mass) were used to obtain montmorillonite nanocomposites. The nanocomposites were processed in a twin screw extruder up to five times. Then, the samples were evaluated by x-ray diffraction, x-ray fluorescence, infrared analysis, colorimetry, rheological measurements and scattering electronic microscopy. XRD showed a decrease and increase in the refraction angle depending of molar mass and with reprocessing steps indicating an increase and decrease in the interplanar distance due to clay intercalation, exfoliation or obtaining of microcomposite. In general, infrared analysis showed an increase in the concentration of carbonyl and unsaturated groups with the increase in the number of reprocessing cycles, but for high molar mass samples a different behavior was showed. Rheological measurements showed differences in the slope index among the samples. Complex viscosity increased with molar mass however it decreased with the number of reprocessing cycles. Montmorillonite was found to be responsible for lower differences between complex viscosities with multiple extrusions. Colorimetry results showed a decrease in the luminosity and red color probably because of the oxidation of the iron ions in MMT, as showed by XRF. The intensity of the yellow increased with the number of reprocessing cycles.