title: The simple and facile methods to improve dispersion stability of nanoparticles: different chain length alkylcarboxylate mixtures.
abstract: 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.
authors.affiliation: 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.
authors.forename: Longhai
authors.initials: L
authors.lastname: Piao
authors.forename: Kyung Hoon
authors.initials: KH
authors.lastname: Lee
authors.forename: Won Jong
authors.initials: WJ
authors.lastname: Kwon
authors.forename: Sang-Ho
authors.initials: SH
authors.lastname: Kim
authors.forename: Sungho
authors.initials: S
authors.lastname: Yoon