中华医学超声杂志

应用化学 ›› 1992, Vol. 0 ›› Issue (2): 18-22.

• 研究论文 • 上一篇    下一篇

醇与十二烷基磺酸钠胶束组成和尺寸相关性的研究

陈景元, 王果庭   

  1. 山东大学胶体与界面化学研究所, 济南 250100
  • 收稿日期:1990-12-25 修回日期:1991-04-20 出版日期:1992-04-10 发布日期:1992-04-10

DEPENDENCE OF THE SIZE AND COMPOSITION OF SODIUM DODECYLSULFONATE MICELLS ON ALKANOLS

Chen Jingyuan, Wang Guoting   

  1. Institute of Colloid and Interface Chemistry, Shandong University, Jinan 250100
  • Received:1990-12-25 Revised:1991-04-20 Published:1992-04-10 Online:1992-04-10

PDF

647

被引次数

5 | 2

摘要： 用稳态荧光法研究了正戊醇、正己醇和正庚醇与烷基磺酸钠形成的胶束组成和尺寸的相关性。结果表明:在一定AS浓度下,醇-AS胶束的N1随醇浓度增加出现最小值,但其NA则一直增大。当XAm增大时,正戌醇、正己醇-AS胶束Rm有明显的最小值。醇碳氢链越长,上述作用越大。

关键词: 醇-十二烷基磺酸钠胶束, 疏水半径, 荧光猝灭

Abstract: The dependence of the size and composition of sodium dodecyl sulfonate(AS) micclls on n-pentanol,n-hexanol and n-heptanol has been investigated using the steady-state fluorescence quenching technique. The results show that with the increase of alcohol concentration ([A]) at certain concentration of AS, the average aggregation number (N1) of the mixed alcohol-AS micells decreases to a minimum and then increases with[A], but their average molecular number (NA) increases steadily with [A].The hydrophobic radius of the spherical mixed pentanol-AS, hexanol-AS micells (Rm) has a minimum value on the plot of Rm versus XAm. The longer the alcohol chain the more pronounced this effect.

Key words: alcohol-sodium dodecyl sulfonate micell, hydrophobic radius, fluorescence quenching technique

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