stable white emulsions
were obtained. The OSi@CS crosslinked nanospheres were carefully
purified with 0.6 wt.% acetic acid aqueous solution by repeated centrifugation
until conductivity of the supernatant was equal to that
of acetic acid solution (0.6 wt.%). The OSi@CS nanospheres were
suspended in 0.6% acetic acid solution for further use.