Thermal conductivity, rheology and stability analysis of2Dtungsten disulphide-doped polyaniline-based nanofluids: An experimental investigation

In this study, polyaniline (PANI) nanocomposite-based nanofluids (NFs) in ethylene glycol were obtained with a two-step method by varying volume concentrations from 0.005% to 0.02%. Tungsten disulphide (WS2) nanoparticles were doped in PANI having different weight percentage (1%, 2% and 5%) via oxidative in situ polymerization employing ammonium persulphate oxidant in an acidic environment. The nanocomposites were comprehensively characterised using various techniques, such as Fourier transform infrared spectroscopy, thermogravimetric analysis, field emission scanning electron microscopy and high-resolution transmission electron microscopy. The formulated NFs were extensively investigated with zeta-sizer, particle size analyzer, thermal property analyzer and rheometer in a temperature range of 25 degrees C to 70 degrees C. The zeta potential results (up to 54.5 mV) were evident of extraordinary stability of NFs at all targeted temperatures along with polydispersity index