Electrical and Thermal Conductivity of “Carbon Nanospheres/Polyaniline” Composites

• Main Authors: Po-Wen, 劉博文
• Other Authors: Chin-Feng Wan
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/66870043888244576393

碩士 === 中山醫學大學 === 應用化學系碩士班 === 98 === This work, polyaniline was doped with hydrochloric acid to polymerization by chemical oxidation monomer, and the carbon spheres were prepared from glucose under hydrothermal conditions at 160 ° C by 3 h. And which the carbon spheres and polyaniline mixed into two kind of composite materials for in situ and solid blending method, respectively. And discussed the two different kind of composite materials with the percolation electrical conductivity and thermal conductivity. Hydrothermal synthesis of carbon spheres could generation perfect spheres, high yield, and narrow size of distribution, diameter from 300 to 800 nm. Compared with various methods have been used to prepare carbon spheres, this method is more simple and facile. It could expect which method compared to other carbon cluster materials can be develop for an excellent material, and we enhance the electrical and thermal conductivity of carbon spheres by calcination method, results that the electrical conductivity enhance to 17.21 S/cm and thermal conductivity enhance to 8.5 W/ m K of carbon spheres, respectively. The solid blending method, is mixing polyaniline and carbon spheres powders with variety of different proportions. Then pressed into home made model for measure electrical conductivity and thermal conductivity. The in-situ polymerization method, the carbon spheres dispersed to the monomer solution by a variety of different ratios and then polymerized. It could make carbon spheres with monomer polymerization at the same time, then similar to the composite material Measurement method, could get the electrical conductivity and thermal conductivity. Finally, we find that in-situ method can reduce the global mixing ratio of composites to achieve the best electrical and thermal conductivity values. Furthermore, carbon spheres and the composites due to development for commercial application.