Vivares Denis, Soussan Elodie, Blanzat Muriel, Rico-Lattes Isabelle
Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique, UMR CNRS 5623, Université Paul Sabatier, 31062 Toulouse Cedex 9, France.
Langmuir. 2008 Sep 2;24(17):9260-7. doi: 10.1021/la8005635. Epub 2008 Aug 9.
The aggregation behavior of the cationic-rich side of a sugar-based tricatenar catanionic mixture was investigated in water, and it was shown that the excess of cationic sugar-based surfactant enhanced vesicle stability as well as encapsulation properties. Moreover, when the system was diluted, the vesicular solution collapsed into a lamellar phase, whereas, when it was concentrated, no major impact on the shape and stability of the aggregates was observed. We also showed that both an increase in temperature and the addition of salt induced reversible vesicle aggregation, which appeared to be salt-specific, following the direct order of the Hofmeister series. A proper adjustment of these parameters should then enable better control of the shape, stability, and even encapsulation ability of the aggregates formed by these tricatenar cationic/anionic mixtures.
研究了基于糖的三链状阴阳离子混合物中富含阳离子一侧在水中的聚集行为，结果表明，过量的阳离子糖基表面活性剂增强了囊泡稳定性以及包封性能。此外，当体系被稀释时，囊泡溶液会坍塌成层状相，而当体系被浓缩时，未观察到对聚集体形状和稳定性有重大影响。我们还表明，温度升高和加盐都会诱导可逆的囊泡聚集，这似乎具有盐特异性，遵循霍夫迈斯特序列的直接顺序。对这些参数进行适当调整，应该能够更好地控制由这些三链状阳离子/阴离子混合物形成的聚集体的形状、稳定性甚至包封能力。
