A method of improving the dispersion of graphene nanoplatelets in cellulose acetate based composite

The application of cellulose acetate (CA) in various industrial areas is strongly influenced by thermal stability. Graphene nanoplatelets (GNPs) as a highly conductive filler promising choice to modify the stability CA, while practical effect falls short expectations associated with promise individually dispersed graphene owing poor dispersion. Supercritical carbon dioxide (SC-CO 2 ) favorable nanoparticles Thus, method, introducing SC-CO into CA/GNPs system during extrusion process, was proposed GNPs dispersion CA matrix. As three main process parameters, it researched that effects injection flowrate, temperature and screw rotation-rate on quality enhanced rising average visible count sample G 1.25 C 0.5 T 37 R 9 decreased 74.79%, compared 0.1 . temperature, 0.3 41 63.63%, 33 rotation-rate, 5 77.71%, 13 Thermogravimetric analysis revealed better beneficial even at an extremely low level. maximum-weight-loss rate first weight-loss-stage samples , appeared 212, 224 225°C, 207, 219 219°C, increment 5, 6°C, when content introduced merely 1.25‰.