Table 3.
Preparation of Lignin Nanoparticles by Using Supercritical CO2 as Anti-solvent.
| Lignin Source | Solvent | Diameter (nm) |
Morphology | Properties | Advantage | Disadvantage | Reference |
|---|---|---|---|---|---|---|---|
| kraft lignin |
DMF | 38 | quasi- spherical |
high UV absorption, dispersion stability, homogeneous thermal degradation, non-cytotoxicity |
uniform size, highly monodisperse |
toxic organic solvent | [68] |
| organosolv lignin | acetone | 144 ± 30 | spherical | enhanced solubility, antioxidant activity |
uniform dispersion | toxic solvent complex process |
[69] |