Starches have being investigated as renewable resource alternative material for several materials applications, mainly packaging, because of its properties as biodegradability, low cost and abundance. However, starch has low mechanical properties and is highly hydrophilic. Thermoplastic starch blends are a key for these issues, but the amount of starch is limited due to the high viscosity of starch. A novel processing technique were employed in this work aiming a better blend processing, with improved compatibilization and easier processing at high starch concentrations. Blends of thermoplastic starch (TPS) and poly(butylene adipate-co-terephthalate) (PBAT) were prepared by Solid-State Shear Pulverization (SSSP or S3P), at room temperature, and conventional twin screw extrusion in different compositions (80, 70, 60 and 50% w/w of starch), both in the same twin screw extruder. Native cassava starch plasticization process was performed during 12 hours in an oven at 90 °C with 25% of glycerol and 10% of water (w/w) with further plasticization in twin screw extruder to obtain TPS, process known as Dry Blend. The processability and visual appearance of films processed by S3P showed to be better, easier to handle and more stable. Preliminary results of mechanical properties showed S3P presented a greater elastic modulus in materials containing higher amounts of starch (80% w/w), but a smaller tensile strength and elongation at break. Materials prepared by S3P showed a higher or equal water absorption compared to those processed directly by conventional twin screw extruder. Retrogradation of both materials showed very close results. Nevertheless, conventionally extruded films are a little less crystalline when compared to those processed by S3P. Analysis of retrogradation as a function of time, morphology and thermal-mechanical properties, are programmed for a better comparison between this two processing techniques.