مرکز منطقه ای اطلاع رساني علوم و فناوري -

چكيده لاتين :

The preparation and characterization of polyaniline/polystyrene (PANI-PS) composite are described. The polyaniline composite was synthesized by chemical polymerization of aniline in polystyrene emulsion matrix. The effects of dioctyl phthalate (DOP), N-methyl-pyrrolidone (NMP) and mineral oil as plasticizer on improving the processability of PANI-PS composite are investigated by melt flow index (MFI) determination. It has been found that, among three tested plasticizers, DOP is more compatiblewiththecomposite. Using35%(w/w)DOP,theMFIvalueof0.093g/10min was recorded at 170°C. The DSC measurements of PANI-PS composite show a softening point at 106°C indicating that the obtained composite is melt processable above this temperature. Based on solubility studies, the composite is soluble in conventional organic solvents. The conductivity of about 0.013 S/cm is obtained for a free standing film of composite. Also the composite has shown excellent adhesion properties onto the steel plate. Cyclic voltammetric studies have revealed that the synthesized composite is electroactive, too.