Tailoring the rheology and electrical properties of polyamide 66 nanocomposites with hybrid filler approach: graphene and carbon nanotubes

The aim was to improve the processability and reduce melt viscosity of well?known nanocomposites based on polyamide 66 (PA66) carbon nanotubes (CNT), while keeping good electrical conductivity gained after addition CNT. Thus, a nanocomposite PA66 as thermoplastic matrix 3% CNT selected. At this composition, percolated network is created material electrically conductive. approach followed graphene nanoplatelets (GNP) two different lateral sizes obtain with hybrid filler: CNT/GNP. In addition, third GNP only prepared for comparison purposes. rheological characterization determined that adding 1% 2 ?m particle size decreased system by 87%. However, diminished some extent, from 10?5 10?9 S?cm?1 approximately. Cross rheology model described successfully experimental data. CNT/GNP exhibited faster relaxations, almost four orders magnitude, in but slower than nanocomposite. nanoparticles improved crystallization ability acting nucleating agents increasing temperature 10 °C. Self?nucleation experiments demonstrated supernucleation feature filler. nucleation efficiency about 500%.