Properties of surfactant monolayers studied by surface light scattering

被引：36

作者：

Sharpe, D ^{[1
]}

Eastoe, J ^{[1
]}

机构：

[1] UNIV BRISTOL,SCH CHEM,BRISTOL BS8 1TS,AVON,ENGLAND

来源：

LANGMUIR | 1996年 / 12卷 / 09期

关键词：

D O I：

10.1021/la951078+

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Properties of monolayers, formed by soluble surfactants of widely differing chemical structure, have been investigated by surface light scattering over the frequency range omega(0) 10(4)-10(5) s(-1). For all surfactants studied, negative values for the dilational viscosity (epsilon') were found, implying that the dilational waves are destabilized. This behavior is consistent with the presence of an adsorption barrier (Hennenberg, M.; ct al. J. Colloid Interface Sci. 1992, 150, 7). This barrier can be altered by mixing dodecane into C(16)TAB and C(10)E(8) monolayers, and epsilon' then assumes positive values. Furthermore, the characteristic time for monomer adsorption into the pure film (tau(ads)) may be estimated as about 10(-5) s(-1).

引用

页码：2303 / 2307

页数：5

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