ペーパークロマトグラフィーからみた繊維集合体の汚れ除去における界面活性剤の作用
1992 年 41 巻 4 号 p. 317-324
詳細
1992 年 41 巻 4 号 p. 317-324
Paper chromatography was conducted for examination of the physico-chemical effects of detergents for removing water insoluble soils on fiber assemblies without mechanical and/or hydrodynamic force. Using cellulose filter paper as the fiber assembly for the fixed phase and C.I. Disperse Blue 3 as a model of water insoluble soil, the relation between Rf' and the concentrations of surface active agents was examined.
The Rf', a measure of detergency, increased steeply near a critical micellar concentration of each surface active agent. In such a case, the longer the chain length of the alkyl group in the alkylsulfate, the lower was the concentration necessary to increase Rf' to give higher detergency. In dodecyl poly (oxyethylene) ethers, the shorter the chain length of the oxyethylene group, the lower was the concentration needed to increase Rf'. On adding NaCl to an aqueous solution of sodium dodecyl sulfate (SDS), the SDS concentration required to increase Rf' was lowered by the builder effect. Ionic surface active agents showed lower Rf' at higher temperature, while nonionic agents showed higher Rf' at high temperature.
By application of a theoretical equation to pseudophase liquid chromatography, the detergency of Disperse Blue 3 as a model of soils could be explained on the basis of the solubilization mechanism.
