测量颜料颗粒的质量和直径-迈向通用尺寸标准

femtoG.comFranz Friebel, Dr. sc. ETH ZürichFranz.friebel@femtoG.com / +41 76 520 29 70 Mass and Diameter of Pigment Particles - Towards a Universal Size StandardOne size standard fits all?What is the true particle size?2SEM / TEM> 2D solution for a 3D problemOptical measurements> Refractive index? > Multiple components?Sedimentation analysis> Particle packing density?Take home message:The mass is a well-defined, fundamental and intrinsic property of a particle. Unlike the many equivalent diameters, the particle mass is independent of the measurement principle and instrument. Colour pigments have masses of 1 to 200 femtogram (10-15g ; fg)iron yellowpigment-FeOOHrecycledcarbonblackiron redpigment–Fe2O3iron blackpigment–Fe3O4whitepigment–TiO2/ anatasecoatedFeOOHWhatisa particle? →Sample preparation!The preparation of a sample material prior to any particle size analysis defines which structural level will be detected. Dry dispersion Powder →Aerosolization →Deagglomeration in Venturi no