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首页> 外文期刊>Hemijska industrija >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
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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

机译:十二烷基硫酸钠-非离子表面活性剂(Triton X-100,Tween 20,Tween 60,Tween 80或Tween 85)在水溶液中的电导研究

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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 β parameters we have noticed that SDS-nonionic surfactants mostly showed strong synergistic effect. It was found that nonionic surfactants with mainly longer and more hydrophobic tail show stronger interactions with hydrophobic part of SDS, thus expressing stronger synergism. In SDS-Tween 80 binary system the strongest synergistic effect was noticed. 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.
机译:本研究涉及通过电导测量确定十二烷基硫酸钠与五种非离子表面活性剂(Triton X-100,Tween 20,Tween 60,Tween 80或Tween 85)之一的混合胶束的临界胶束浓度(cmc)。 。基于β参数的计算值,我们注意到SDS-非离子表面活性剂大多表现出强大的协同作用。发现主要具有更长和更多疏水尾的非离子表面活性剂显示出与SDS的疏水部分更强的相互作用,因此表现出更强的协同作用。在SDS-Tween 80二元系统中,注意到了最强的协同作用。 SDS-Tween 85胶束系统表现出拮抗作用,最可能是因为在其三个疏水尾(三个C18尾)中双键的存在使其空间刚性。

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