期刊
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
卷 30, 期 6, 页码 802-808出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01932690802643394
关键词
Cryogenic transmission electron microscopy; perforated bilayer; perforated vesicle; thread-like micelles; vesicle
资金
- Swedish Research Council, Knut
- Alice Wallenberg Foundation
- Carl Tryggers Foundation
Morphologies of aggregates in mixtures of long chain alcohols (n-decanol, n-dodecanol, and oleyl alcohol) and cationic surfactants (cetylpyridinium chloride, cetyltrimethylammonium bromide, and chloride) in dilute aqueous salt solutions were investigated by cryogenic transmission electron microscopy. In all cases elongated micellar structures transformed into vesicles with increasing alcohol concentration. Perforated bilayer structures were clearly identified in systems with oleyl alcohol and CTAB, in particular in 0.100M NaBr. Increasing the salt concentration to 0.200M other aggregates dominated composed of threadlike, probably branched, and interconnected micelles. A gradual evolution of morphologies was observed with increasing alcohol content at the lower salt concentration: thread-like micelles (developing branching to some extent), perforated vesicles, coexisting perforated and smooth bilayer structures, only smooth bilayers, and finally also inverted strucutures.
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