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Cyclodextrins Increase Surface Tension and Critical Micelle Concentrations of Detergent Solutions
Author(s) -
Saenger Wolfram,
MüllerFahrnow Anke
Publication year - 1988
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198803931
Subject(s) - micelle , surface tension , critical micelle concentration , chemistry , pulmonary surfactant , solubility , monolayer , cyclodextrin , aqueous solution , chemical engineering , molecule , hydrophobe , chromatography , organic chemistry , thermodynamics , biochemistry , physics , engineering
Because they function as solubility enhancers! Cyclodextrins envelop the hydrophobic part of the detergent molecule in their cavity and thus destroy the formation of micelles as well as of monolayers at the air/water interface. The former increases the critical micelle concentration, the latter the surface tension. The effect is most pronounced when the cyclodextrin cavity and hydrophobic part of the detergent molecule exhibit the tightest fit. Cyclodextrins are thus suitable, inter alia, as antifoaming agents.