Miscibility initial studies are are required to obtain miscibiliti palm dust frond-polypropylene (SPS-PP). The main idea by reseach to estimate miscibility (mixed ability) SPS-PP system based on the free energy of mixing calculated by the Flory-Huggins equation. Solubility parameter and molar volume calculated by Van Krevelen and Group Contribution Volume (GCVol) methods. The research used s…