Improved Synthesis of Nanosized Silica in Water-in-Oil Microemulsions

Table 5

Electrokinetic potentials of silica nanoparticles at pH 7.45.

Sample	Aqueous phase
	Water	2% aqueous HEC	2% aqueous -CD
1	−22.1 ± 1.2 mV	−25.6 ± 2.0 mV	−19.8 ± 1.3 mV
2	−24.8 ± 1.0 mV	−22.0 ± 1.8 mV	−21.8 ± 1.7 mV
3	−23.4 ± 0.9 mV	−24.3 ± 1.5 mV	−22.6 ± 1.8 mV
4	−24.1 ± 1.7 mV	−22.1 ± 0.8 mV	−23.7 ± 1.5 mV
5	−25.0 ± 1.6 mV	−22.6 ± 1.0 mV	−23.8 ± 2.1 mV

Value ± standard deviation.