Mixed Micelles of Anionic−Nonionic and Anionic−Zwitterionic Surfactants Analyzed by Pulsed Field Gradient NMR
Mixed Micelles of Anionic−Nonionic and Anionic−Zwitterionic Surfactants Analyzed by Pulsed Field Gradient NMR
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通过脉冲场梯度 NMR 分析阴离子-非离子和阴离子-两性离子表面活性剂的混合胶束
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发表时间：
2000
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通讯作者：
R. Jerome
中科院分区：
文献类型：
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作者：
A. Misselyn;A. Thibaut;J. Grandjean;G. Broze;R. Jerome
用脉冲梯度自旋−回波核磁共振技术分析了十二烷基硫酸钠/戊二醇单十二烷基醚(C10E5)和十二烷基硫酸钠/十二胺丙基甜菜碱(LAPB)两种二元表面活性剂体系的胶束组成。将实验数据与基于规则溶液理论的理论预测进行了比较，该理论考虑了表面活性剂对的非理想混合。虽然对于SDS/C10E5体系，实验与理论符合得很好，但对于LapB/SDS体系，特别是在高摩尔分数的十二烷基硫酸钠时，发现了一些不同之处。
The micellar composition of two binary surfactant systems, that is, sodium dodecyl sulfate (SDS)/pentaethylene glycol monodecyl ether (C10E5) and SDS/lauryl amido propyl betaine (LAPB), has been analyzed by pulsed gradient spin−echo NMR (FT-PGSE NMR). The experimental data have been compared to theoretical predictions based on the regular solution theory that takes into account the nonideal mixing of the surfactant pairs. Although good agreement between experiment and theory is observed for the SDS/C10E5 pair, some discrepancy is noted for the LAPB/SDS system, particularly at a high molar fraction of SDS.