SADDLE-SPLAY MODULUS OF THE AOT MONOLAYER IN THE AOT-BRINE-OIL SYSTEM

被引：40

作者：

KELLAY, H ^{[1
]}

MEUNIER, J ^{[1
]}

BINKS, BP ^{[1
]}

机构：

[1] UNIV HULL, SCH CHEM, HULL HU6 7RX, N HUMBERSIDE, ENGLAND

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.70.1485

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Three parameters determine the geometry of monolayers in oil-brine-surfactant mixtures dilute in surfactant: the mean bending elastic modulus K, the saddle-splay modulus KBAR, and the spontaneous curvature C0 of the monolayer. It is found that KBAR and C0 of an AOT monolayer vary linearly with S-0.5 and S0.5, respectively (S is the salt concentration) as predicted for monolayers with high charge densities. KBAR is positive for a long-chain oil (12 carbon atoms) and negative for a shorter-chain oil in agreement with the geometry of the phases obtained at optimal salinity where C0=0.

引用

页码：1485 / 1488

页数：4

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