期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 247, 期 2, 页码 456-462出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/jcis.2001.8162
关键词
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The specific conductance, surface tension, mean aggregation number, and apparent molar volume properties of aqueous solutions of a novel series of N,N'-bis(cyclododecyldimethyl)-alpha,omega-alkanediammonium dibromide (c12-s-c12) surfactants, where s is the spacer chain length, are reported. Surfactants with s = 3, 4, and 6 have been prepared and characterized in terms of their Krafft temperature (T-Kr) critical micelle concentration (cmc), surfactant head group area (a) at the air-water interface, mean aggregation number (N-agg), and the volume change upon micelle formation (DeltaV(phi,M)). The c12-3-c12 shows little evidence of aggregate formation, while the results obtained for the c12-4-c12 and c12-6-c12 homologues suggest the formation of small, poorly defined micellar aggregates in aqueous solution. (C) 2002 Elsevier Science (USA).
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