王泽世，侯迎迎，刘金彦
(内蒙古科技大学 化学化工学院，内蒙古包头 014010)
关键词：碳氟表面活性剂；复配体系；临界胶团浓度(cmc)；Ce3+；荧光探针
中图分类号 : TQ423 文献标识码：A
摘要：对于两性碳氟表面活性剂C8F17及其与阳离子表面活性剂CTAB、阴离子表面活性剂SDBS复配体系，分别以Ce3+和芘为探针，使用荧光光谱法研究体系临界胶团浓度(cmc)，并且与表面张力法相比较来探究此方法的可行性。结果表明，Ce3+探针可以进行碳氟表面活性剂C8F17及其复配体系的临界胶束浓度的测定，芘探针的荧光光谱法只能进行C8F17复配体系的临界胶束浓度的测定，三种测定方法测定的结果一致，表明Ce3+是可以作为研究表面活性剂性质的荧光探针。
The measured ofcritical micellar concentration of amphoteric fluorocarbon surfactant and its mixed system
WANG Ze-shi ,HOU Ying-ying,LIU Jin-yan
(College of Chemistry and Chemical Engineering , Inner Mongolia University of Science & Technology, Baotou 014010, Inner Mongolia,China)
Key words: Fluorocarbon surfactant, Mixed systems, Critical micelle concentration(cmc), Ce3+, Fluorescent probe
Abstract: The critical micellar concentrations (cmc) of bothamphoteric fluorocarbon surfactant C8F17 and its mixtures with cation surfactant of CTAB and anionic surfactant of SDBS were determined by adopting fluorescence spectrum Ce3+ and pyrene as probes. And the results were compared with that of the surface tension method. The study shows that the method of cerium probe can measure th
e cmc of both C8F17 and the mixed system, while pyrene probe can only be used to determine the cmc of the mixed system. The cmc values measured by three methods mentioned above were consistent. The conclusion can be drawn that Ce3+ can be used as the fluorescent probe for the study of the surfactants properties.