中文摘要：

利用动态光散射（Dynamic Light Scattering，DLS）、瞬态电双折射（Transient Electric Birefringence，TES）和粘度测定方法研究了部分氟代阳离子表面活性剂氟代-2-羟基十一烷基二乙羟基甲基氯化铵（diethanolheptadecafluoro-2-undecanol methylammonium chloride，C8F17CH2CH（OH）CH2NCH3（C2H4OH）2Cl，DEFUMACl）水溶液的胶束化特性．结果表明：DEFUMACl的临界胶束浓度cmc为3．8mmol·L^-1．稀溶液中随着DEFUMACl浓度的增加或者无机盐NaCl的加入，DEFUMACl胶束由球形向棒状转变，其转变浓度，即第二临界胶束浓度（cmcⅡ）为0．2mol·L^-1；电导测定的反离子（Cl^-）结合度为0.72，利用球形和棒状胶束模型确定的DEFUMACl胶束聚集数分别为45和335．

英文摘要：

The micellar properties such as critical micelle concentration （cmc）, counterion binding, and the micellar growth of cationic fluorocarbon surfactant, diethanolheptadecafluoro-2-undecanol methylammonium chloride （DEFUMACl）, were studied by dynamic light scattering （DLS）, transient electric birefringence （TEB） and viscosity measurements. The micellar growth of DEFUMACl was induced by increasing DEFUMACl concentration and adding inorganic salt （NaCl）. The cmc of DEFUMACI is 3.8 mmol·L^-1. The results clearly showed that the spherical micelles were elongated to rod-like micelles by addition of salt in a dilute DEFUMACl solution or increasing DEFUMACl concentration. The second critical micelle concentration （cinch） was determined to be 0.2 mol·L^-1 by conductivity measurements. The aggregation numbers of spherical and rod-like micelles were calculated to be 45 and 335, respectively.