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Properties

Properties MF-Particles PS-Particles PMMA-Particles Silica-Particles
Density 1,51 g/cm3 1,05 g/cm3 1,19 g/cm3 1,85 g/cm3
Refractive index 1,68 1,59 1,48 1,42
Particle diameter                         300 nm -12 µm        100 nm -1000 µm     100 nm -1000 µm          100 nm-25 µm
Monodispersity CV < 5% CV < 5% CV < 5% CV < 5%
Particle shape spherical spherical spherical spherical
Surface charge > pH5 anionic anionic anionic anionic
Functional groups methylol, imino           sulfate sulfate silanol
Hydrophilicity/Hydrophobicity hydrophilic hydrophobic hydrophobic hydrophilic
Crosslinking crosslinked non-crosslinked (crosslinked) non-crosslinked (crosslinked) crosslinked
Porosity non-porous non-porous non-porous non-porous
Temperature stability to 250 °C  100 °C  100 °C to 1000 °C
Mechanical strength robust robust robust robust
Solubility in acids and bases insoluble insoluble insoluble soluble in HF and bases
Stability in solvents without swelling water, alcohols,                        all solvents and oils water, low alcohols                       water, DMSO, aliphatic  hydrocarbons water, alcohols,                  all solvents and oils
Biocompatibility biocompatible biocompatible biocompatible biocompatible