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Citation: Chen Jingyuan, Wang Guoting. DEPENDENCE OF THE SIZE AND COMPOSITION OF SODIUM DODECYLSULFONATE MICELLS ON ALKANOLS[J]. Chinese Journal of Applied Chemistry, ;1992, 9(2): 18-22. shu

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

Corresponding author: Chen Jingyuan,
Received Date: 25 December 1990
Available Online: 20 April 1991

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 (N_A) increases steadily with[A].The hydrophobic radius of the spherical mixed pentanol-AS, hexanol-AS micells (R_m) has a minimum value on the plot of R_m versus X_A^m. The longer the alcohol chain the more pronounced this effect.
- alcohol-sodium dodecyl sulfonate micell,
- hydrophobic radius,
- fluorescence quenching technique
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