The simple and facile methods to improve dispersion stability of nanoparticles: different chain length alkylcarboxylate mixtures.
The dispersion stability of the Ag nanoparticles with a mixed surfactant of alkylcarboxylates was quantitatively examined, compared with those of the Ag nanoparticles with a single molecule surfactant of alkylcarboxylates. The nanoparticles with a mixed surfactants have far-improved dispersion stability compared with those with normal alkylcarboxylates. The surface roughness of the surfactant layer might be responsible for the improved dispersion stability through the enhanced solvent-surfactant interaction and the decrease in inter-particle surfactant interactions.
Piao
Longhai
L
College of Engineering, Center for Materials and Processes of Self-Assembly, Kookmin University, 861-1 Jeongnung-dong, Seongbuk-gu, Seoul 136-702, Republic of Korea.
Lee
Kyung Hoon
KH
Kwon
Won Jong
WJ
Kim
Sang-Ho
SH
Yoon
Sungho
S