Conductivity and superhydrophobic effect on PFPE-modified porous carbonaceous materials

摘要: Abstract The thermal decomposition of a linear perfluoropolyether peroxide produced radicals that covalently bonded the unsaturated moieties on surface carbon black and cloth. Measurements contact angles demonstrated water droplets were enduringly stable treated materials angle values significantly high, exceeding superhydrophobicity threshold. On contrary, adsorbed in few seconds by native materials. Conductivity measurements showed covalent linkage fluorinated chains weakly modified electrical properties conductive carbonaceous materials, even if changed so deeply. relationship between variations physical-chemical studied combining X-ray photoelectron spectroscopy, resistivity measurements, scanning electron microscopy area analysis. cloth was also tested out as gas-diffusion layer fuel cell preliminary results recorded.