头孢唑酮对CTAB胶束结构特性的影响

应用电导法和荧光法测定了头孢唑酮对阳离子表面活性剂十六烷基三甲基溴化铵（CTAB）胶束第一cmc1、第二cmc2、胶束聚集数及体系粘度的影响,测定了头孢唑酮在CTAB胶束中的分配系数.结果表明,头孢唑酮的加入使得CTAB胶束的第一cmc和第二cmc均上升,胶束的聚集数和体系的粘度降低.上述结果与头孢唑酮和CTAB分子的相互作用及其在CTAB胶束相和水连续相的分配有关.

The Effect of Cephanone on the Structural Characters of CTAB Micelles

The effect of cephanone on the first critical micelle concentration (cmc1) and the second critical micelle concentration (cmc2) of CTAB have been studied by methods of conductivity and fluorescence polarization.The aggregation number of CTAB micelles and the distribution coefficient of cephanone between the CTAB micelle and the aqueous phase have been studied through the methods of the static fluorescence and UV spectra,respectively.The results show that with increasing cephanone concentration,cmc1 and cmc2 of CTAB micelle both increase,whereas the aggregation number of micelles and the viscosity of CTAB micelle system both decrease.The results are related to the interaction between cephanone and CTAB and the distribution of cephanone between CTAB micelle and the aqueous phase.