Structural and tribological properties of hard carbon film synthesized by heat-treatment of a polymer on graphite substrate

Polyaniline/Graphite Nanosheets Composites and its Conducting Properties

“…Among the various conducting fi llers, natural graphite materials were found to be good conductive fi llers and have been widely used for compounding composites because they are light, steady, abundant and inexpensive [6][7][8][9][10] . But the size of the natural fl ake graphite (NG) particle is at micrometre and millimetre scales, too high concentration could lead to polymer composites redundancy and detrimental mechanical properties and poor conducting properties 11 . In order to develop a highly conducting polymer matrix with as small an amount of nanoscale fi ller as possible, one could use nanoscale fi llers as conducting components.…”

A novel method for the preparation of amorphous hydrogenated carbon films containing Au nanoparticles

“…It is composed of randomly constructed network of tetrahedral hybridized phenylcarbyne units and can be converted into a-C: H films by pyrolysis [15][16][17][18]. The polymer powder and proportional HAuCl 4 AE 3H 2 O (Au:C ¼ 1:25, molar ratio) were dissolved in THF, followed by spin-coating onto the surface of single crystal silicon (1 0 0) substrate, to allow the formation of the polymer composite films after the removal of the THF by evaporation.…”

“…The phenylcarbyne polymer is hydrocarbon network that is mainly composed of tetrahedral hybridized carbon atoms, each bearing one phenyl. At a higher temperature of heat treatment, some phenyl rings and an amount of hydrogen evolved from the polymer network, caused the structural changes of the polymer and resulted in the conversion of diamond-like carbon phase [18]. At the same time, with the help of the atomic hydrogen, AuCl À 4 anions can be reduced into zerovalence Au very easily.…”