Fabrication Of Highly Ordered 3D Multiwall Carbon Nanotube-based Polvstvrene Composite Materials And Their Outstanding Electrical Conductivity

In this thesis,we focused on the fabrication of multiwall carbon nanotube-based polystyrene(PSIMWCNTs)composite materials and the further research on the electrical property.PS/MWCNTs composite particles were prepared successfully based on the theory of colloidal thermodynamics,and then used to controllably fabricate highly ordered 3D composite materials via "particle-constructing" method and the electrical property of the materials was specially studied.The main contents of this thesis contain the following two aspects:(1)Controllable Fabrication of PS/MWCNTs compositesDriven by thermodynamics,PS were coated controllably with multiwall carbon nanotubes without any superficial modification,forming PS/MWCNTs composites via heterocoagulation.From thermodynamic analysis,We investigated the effect of different thermodynamic factors on PS/MWCNTs composites' morphology,and fabricated various kinds of composites with different sizes of PS,lengths of MWCNT and the medium components(2)Fabrication and properties of highly ordered network structured PS-MWCNTs composite materialsWe fabricated highly ordered PS-MWCNTs composite materials with outstanding electrical properties using the above composites via"particle-constructing" method,throughout which the MWCNTs formed intact,uniform and well-defined network structure within polymer matrix.