| Due to unique nanoscale structure as well as outstanding mechanical,electrical and thermal properties,carbon nanomaterials,such as carbon nanotubes?CNTs?and graphene oxide?GO?,are paid more attention,which make them promising candidate for the development of structure-function integrated composites.Pickering templating strategy using solid particles as stabilizer has increasingly applied to produce porous composites.The wettability and content of solid stabilizer are responsible for the type and stability of the resulting Pickering emulsion.In this study,GO and CNTs are subjected to chemical reaction in the presence of 2-ethyl-4-methyl?2,4-EMI?to synthesize carbon nanohybrids,which have been characterized using Infra-red?IR?spectra,X-ray diffraction?XRD?and contact angle?CA?measurements.The oil-in-water?O/W?and water-in-oil?W/O?emulsion stabilized by carbon nanohybrids exposed to different reaction times are prepared,respectively.A porous GO/CNTs/polystyrene?PS?nanocomposites has been produced using styrene?St?monomer as continuous oil phase based on W/O Pickering emulsion.The properties and morphology of the as-made porous nanocomposites are tested and analyzed.It has been demonstrated that the carbon nanohybrid stabilizer with tunable structure and amphiphilicity can be synthesized by modulating the reaction time.The effects of the stabilizer concentration,stabilizer formulation,and the pH value were investigated to tailor the properties and stability of W/O Pickering emulsion.The different changes have been exhibited with respect to electrical and mechanical properties of the porous nanocomposites as a function of stabilizer concentration.At a mix ratio of 6:1?GO:CNTs?,the maximum electrical conductivities of carbon nanohybrids-containing composites are demonstrated at an initial GO concentration of 6mg·mL-1.And the optimum mechanical properties are obtained at an initial GO concentration of 2mg·mL-1. |
PDF Full Text Request