Abstract
Choline dodecylsulfate (ChDS) has been prepd. and studied as an environmentally friendly surfactant. The advantage of the physiol. metabolite choline is its bulky structure that prevents ChDS from easy crystn. and thus leads to a considerable lowering of the Krafft point down to 0°C. The counterion-headgroup binding is reflected by the aq. phase behavior of ChDS. Cond., surface tension, and ...
Abstract
Choline dodecylsulfate (ChDS) has been prepd. and studied as an environmentally friendly surfactant. The advantage of the physiol. metabolite choline is its bulky structure that prevents ChDS from easy crystn. and thus leads to a considerable lowering of the Krafft point down to 0°C. The counterion-headgroup binding is reflected by the aq. phase behavior of ChDS. Cond., surface tension, and cryo-TEM measurements allow the characterization of the dil. micellar region, while the penetration scan technique enables the establishment of a preliminary aq. phase diagram. The effect of different mono- and divalent salts on the soly. of ChDS was investigated. ChDS was less sensitive towards addn. of salts than, for instance, choline carboxylates due to an increased counterion-headgroup assocn. Cytotoxicity tests on HeLa and SK-Mel 28 cells showed that ChDS was no more harmful than its sodium counterpart SDS.
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