MICELLAR PROPERTIES OF 2-HEADED SURFACTANT SYSTEMS - THE DISODIUM 1,2-ALKANEDISULFATES

A family of two-headed surfactants, the disodium 1,2-alkanedisulfates, has been synthesized by the addition of chlorosulfonic acid to the co rresponding 1,2-alkanediol. The ability of these salts to form micelle s in aqueous solution is demonstrated from solution conductance measur ements and counterion activity measurements of the sodium ion. The cri tical micelle concentrations (cmc's) and apparent degrees of counterio n binding (beta' values) of these surfactants indicate that the additi on of the second headgroup has a profound effect on the micelles forme d by the disulfates when compared to their monosulfate analogues.