Takata Youichi, Ohtsuka Yuka, Ashida Takumi
Department of Chemical and Biological Engineering, National Institute of Technology, Ube College.
J Oleo Sci. 2019 Sep 4;68(9):855-861. doi: 10.5650/jos.ess19086. Epub 2019 Aug 14.
We investigated the solubilization behavior of the hydrocarbon surfactant lithium dodecyl sulfate (LiDS) and the fluorocarbon surfactant lithium 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-1-octanesulfonate (LiFOS) in an aqueous solution to determine the controlled release mechanism of solubilizate. The LiDS system solubilized Sudan III, a hydrocarbon compound, whereas the LiFOS system did not, because of the immiscibility of the hydrocarbon and fluorocarbon compounds. The solubilization ability of the LiDS and LiFOS mixtures gradually decreased with increasing LiFOS bulk composition because the micelles mainly composed of LiDS transformed into micelles mainly composed of LiFOS. Furthermore, Sudan III solubilized in the aqueous LiDS was deposited when an aqueous LiFOS was added. The difference in the solubilization behavior between LiDS and LiFOS enabled the controlled release of the solubilizate.
我们研究了烃类表面活性剂十二烷基硫酸锂（LiDS）和氟碳表面活性剂1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-十七氟-1-辛烷磺酸锂（LiFOS）在水溶液中的增溶行为，以确定增溶物的控释机制。LiDS体系增溶了烃类化合物苏丹III，而LiFOS体系由于烃类和氟碳化合物的不混溶性而没有增溶。LiDS和LiFOS混合物的增溶能力随着LiFOS本体组成的增加而逐渐降低，因为主要由LiDS组成的胶束转变为主要由LiFOS组成的胶束。此外，当加入LiFOS水溶液时，溶解在LiDS水溶液中的苏丹III会沉淀出来。LiDS和LiFOS增溶行为的差异实现了增溶物的控释。
