Abstract— This study has been conducted in order to use rationally rice husk ash (RHA) since it is one of the most abundant industrial waste. With the purpose of comparing fillers, composites of PHB (polyhydroxybutyrate) with RHA and PHB with talc (TA), were obtain by twin-screw extrusion and injection molding techniques and characterized by the use of Laser Flash Method and Differential Scanning Calorimetry (DSC). The thermal conductivity value displayed by PHB polymer was 0.419 W∙m-1∙K-1 while the composites values were slightly higher, due to the increasing content of the filler. PHB/RHA composite showed maximum values 0.456 W∙m-1∙K-1 and, PHB/TA composite was 0.492 W∙m-1∙K-1. As regards to the DSC it can be stated that the presence of filler does not change significantly the thermogram curve, as evidenced by the endothermic peak at 172.96°C, 173.61°C and 171.65°C to PHB, PHB/RHA (85/15) and PHB/TA (85/15), respectively. Fillers from waste contribute to sustainable materials.
Keywords— PHB (polyhydroxybutyrate), Composites, Rice Husk Ash, Talc, Laser Flash Method.
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