The emulsion stabilization conditions suitable for nanocellulose-coated microparticle syntheses was investigated by changing the lengths of nanocelluloses. The optimal nanocellulose concentration for stabilizing the emulsion was found to vary with the nanocellulose length, and longer nanocelluloses efficiently stabilized the emulsion at lower concentrations due to the higher viscosity. The emulsions stabilized by shorter nanocelluloses were found to be more suitable for the preparation of fine microparticles because the nanocelluloses effectively covered the surfaces of oil droplets in the emulsions, precluding coalescence.
- Shuji Fujisawa
- Reina Tanaka
- Tsuguyuki Saito
