This work concerns the study of the mechanical and thermal behavior of the polypropylene nanocomposite with bentonite clay Brazilian Paraiba (PB), which is known as ‘‘chocolate’’. A Brazilian polycathionic bentonite was treated with sodium carbonate to transform it into a swelling bentonite and then treated with ammonium hexadecyltrimethyl ammonium chloride to turn it into an organoclay, swelling in organic liquids. The paper powder cellulose with 1% e 2% by weight was mixture with organophilic clay, with 1% and 2% by weight, were processed using a twin-screw extruder. Compatibilizer polypropylene graft (PP-g-AM) was added at 3% concentration, and the clay was dispersed using the melting intercalation technique in a twin-screw extruder. The specimens were prepared by the injection process. The mechanical behavior was evaluated by strength and impact tests. The thermal behavior was evaluated by the technique of differential scanning calorimetry (DSC). The morphology of the nanocomposites was studied with scanning electron microscopy (SEM), while the organophilic bentonite and nanocomposite were characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The nanocomposites showed improved mechanical properties compared with the polymer without filler. Keywords: Polypropylene nanocomposites, Organophilic clay, Bentonite, Cellulose