Study of Carbon nanotube-filled Poly(butylene Succinate)/High Density Polyethylene Blend-based Nanocomposites Darshan TG a, Fang-Chyou Chiu a,b* aDepartment of Chemical and Materials Engineering, Chang Gung University, Taoyuan 333, Taiwan. bDepartment of General Dentistry, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan. maxson@mail.cgu.edu.tw Abstract: In this study, immiscible poly(butylene succinate)/high density polyethylene(PBS/HDPE) blend-based nanocomposites were prepared using an internal mixer. Carbon nanotube (CNT) and maleated HDPE (PEgMA) served as the reinforcing nanofillers and compatibilizer, respectively. Scanning electron microscope results showed that PEgMA played an efficient role as compatibilizer for reducing the dispersed domain size of the HDPE in the PBS/HDPE blend. The added CNT was selectively localized within the HDPE domains. Thermal gravimetric analysis revealed that the presence of CNT enhanced the thermal stability of the blend under both air and nitrogen conditions. Differential scanning calorimetry results showed the nucleation effect of CNT on the PBS/HDPE crystallization. The rigidity of PBS/HDPE blend evidently increased after the addition of CNT. The rheological property measurement confirmed the achievement of pseud-network structure in the composites after loading of CNT. The electrical resistivity of the samples drastically reduced with addition of CNT, up to 10 orders of drop at a 3-phr CNT loading. The electrical percolation was constructed at a CNT content of approximately 0.6-phr. Keywords: Poly(butylene succinate); High density polyethylene; Blends; Nanocomposites