[en] Research into the development of biodegradable materials of renewable energy sources are increasing and polycaprolactone (PCL) is a biodegradable thermoplastic which has many applications. The cellulose nanocrystals (NCC) are crystalline domains of cellulose sources and have been evaluated as reinforcement in polymer matrices for their potential to improve many properties. Micro Composites PCL with NCC were developed by by melting intercalation 3 content and 5% nanocellulose. Specimens tensile and impact were injection molded and the material was characterized by FTIR, XRD, TGA, DSC and mechanical properties. The FTIR and TGA results show the presence of load array and greater thermal stability respectively. XRD and DSC shows an increase in crystallinity. The properties: tensile and impact the system showed improvements in module, tension, and ductility of the material. (author)