Polyhydroxybutyrate-hydroxyvalerate (PHB-HV) coffee residue composites were prepared from PHB-HV and two different loadings of residue the husk and pill of coffee. The solvent evaporation technique "casting'' was used to form the films. To evaluate the residue effect in the PHB-HV properties and the material dispersion, the films were analyzed by X-ray diffraction (XRD), Scanning Electronic Microscopy (SEM) and from mechanical properties. These techniques provided strong evidence that the residue formed a homogeneous intercalated structure, although it did not altered the cristalinity of PHB-HV. The mechanical properties were evaluated by puncture force and deformation before the rupture, indicating that the presence of the organic charge elevates both properties. The composite obtained is a new material with a wider application field than the PHB-HV.
PHB-HV; composites; agro industrial waste; coffee husk and peel
