Cestari, SibeleSibeleCestariMendes, Luis ClaudioLuis ClaudioMendesSilva, Daniela Franc̜a daDaniela Franc̜a daSilvaChimanowsky, Jorge PereiraJorge PereiraChimanowskyAltstädt, VolkerVolkerAltstädtDemchuk, VitalyVitalyDemchukLang, AnnelieseAnnelieseLangLeonhardt, Rodrigo GhenoRodrigo GhenoLeonhardtKeller, Jan-HendrikJan-HendrikKeller2019-06-242019-06-242013Polimeros 23 (6): 733-737 (2013)http://hdl.handle.net/11420/2809Composites of recycled high density polyethylene (HDPE-R) and coffee dregs (COFD) were elaborated. The blends were made at the proportions of 100-0, 90-10, 80-20, 70-30, 60-40, 50-50 and 40-60% polymer-filler ratio. The materials were evaluated through scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetry/derivative thermogravimetry (TGA), and compressive resistance test. The compounding was done using a two-stage co-kneader system extruder, and then cylindrical specimens were injection molded. All composites had a fine dispersion of the COFD into the polymeric matrix. The composites degraded in two steps. The first one was in a temperature lower than the neat HDPE, but higher than the average processing temperature of the polymer. The melting temperature and the degree of crystallinity of the composites resulted similar to the neat HDPE ones. The compressive moduli of the composites resulted similar to the neat polymer one. The results show that these composites have interesting properties as a building material.en1678-516920136733737Associação Brasileira de Polímeroscompositesmechanical propertiesthermal propertiesrecyclingHDPEBiowissenschaften, BiologieMedizinIngenieurwissenschaftenJournal Article10.4322/polimeros.2014.011Journal Article