Conductometric study of sodium dodecyl sulfate-nonionic surfactant (Triton X-100, Tween 20, Tween 60, Tween 80 or Tween 85) mixed micelles in aqueous solution

被引：53
|
作者：
Cirin, Dejan M. [1 ]
Posa, Mihalj M. [1 ]
Krstonosic, Veljko S. [1 ]
Milanovic, Maja Lj [1 ]
机构：
[1] Univ Novi Sad, Fac Med, Dept Pharm, Novi Sad 21000, Serbia
来源：
HEMIJSKA INDUSTRIJA | 2012年 / 66卷 / 01期
关键词：
Conductometric study; mixed micelles; cmc; anionic surfactant; SDS; nonionic surfactants; Triton X-100; Tween; BINARY-MIXTURES; LAURYL SULFATE; SYNERGISM; MICELLIZATION; MECHANISM; BEHAVIOR; SYSTEMS; VIRUSES;
D O I：
10.2298/HEMIND110612059C
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The present study is concerned with the determination of the critical micelle concentration (cmc) of mixed micelles of sodium dodecyl sulfate with one of five nonionic surfactants (Triton X-100, Tween 20, Tween 60, Tween 80 or Tween 85) from conductance measurements. Based on the calculated values of the beta parameter we have noticed that SDS-nonionic surfactants mostly showed strong synergistic effects. It was found that nonionic surfactants with mainly longer and more hydrophobic tails show stronger interactions with hydrophobic parts of SOS, thus expressing stronger synergism. The strongest synergistic effect was noticed in an SDS-Tween 80 binary system. The SDS-Tween 85 micellar system showed antagonistic effect, most probably because the presence of the double bond in its three hydrophobic tails (three C18 tails) makes it sterically rigid.
引用
收藏
页码：21 / 28
页数：8
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