CHARGE-TRANSFER CHROMATOGRAPHIC STUDY ON THE INTERACTION OF NONHOMOLOGOUS SERIES OF NONIONIC SURFACTANTS WITH HEPTAKIS(2,6-DI-O-METHYL)-BETA-CYCLODEXTRIN

The interaction of 38 nonionic surfactants containing various hydropho bic moieties with dimethyl-beta-cyclodextrin (DIMEB) was studied by ch arge transfer chromatography. DIMED modified the retention behaviour o f each surfactant, however, the strength of interaction varied conside rably. Both the lipophilicity and specific hydrophobic surface area of surfactants significantly influenced the strength of interaction. The presence of ester bond and double bond in the hydrophobic moiety of s urfactants has impact on the complex formation.