Solvent effect on ζ potential at an aqueous/oil interface in surfactant-free emulsion.
The present study prepared a size-controllable, uniform, and surfactant-free emulsification to investigate the ζ potential of the solvent effect. The results showed that the ratio of electrophoretic mobility changed with droplet diameter, and the correct factor of the ζ potential was determined. The effect of functional groups on the ζ potential was further studied in the presence of an organic hydrophilic solvent. The study characterized the effects of pH, ionic strength, and ionic type on the ζ potential and indicated that the solvents were able to modulate the local electrochemical environment, thus leading to the redistribution of interface charges.
Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences , Beijing 100190, China.
Yong
Y
Wu
Qiang
Q
Li
Fuli
F
Deng
Xiangfeng
X
Liang
Huizhou
H
Liu