ROLE OF CHAIN ORDER IN THE LONG-RANGE ATTRACTIVE FORCE BETWEEN HYDROPHOBIC SURFACES

被引：35

作者：

RABINOVICH, YI ^{[1
]}

GUZONAS, DA ^{[1
]}

YOON, RH ^{[1
]}

机构：

[1] VIRGINIA POLYTECH INST & STATE UNIV,CTR COAL & MINERALS PROC,BLACKSBURG,VA 24061

来源：

LANGMUIR | 1993年 / 9卷 / 05期

关键词：

D O I：

10.1021/la00029a002

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The dependence of the hydrophobic force parameters on the chain order parameter (S) has been investigated for mica surfaces deposited with monolayer films of dimethyldioctadecylammonium (DDOA) ions. A linear relationship between the force parameters and S was found, suggesting that the hydrophobic force is related to the hydrocarbon chains ordering, which in turn may affect the ordering of vicinal water molecules. It appears that there exists a threshold value of S (almost-equal-to 0.3), below which no significant hydrophobic force is discernible. This observation offers an explanation of the long-range hydrophobic forces measured with mica surfaces coated by double-chain surfactants.

引用

页码：1168 / 1170

页数：3

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