PRESSURE AND PH-DEPENDENCE OF THE STRUCTURE OF A FATTY-ACID MONOLAYER WITH CALCIUM-IONS IN THE SUBPHASE

被引：84

作者：

SHIH, MC ^{[1
]}

BOHANON, TM ^{[1
]}

MIKRUT, JM ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,DIV MET & CERAM,OAK RIDGE,TN 37830

来源：

JOURNAL OF CHEMICAL PHYSICS | 1992年 / 96卷 / 02期

关键词：

D O I：

10.1063/1.462139

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have studied the effect of pressure and pH on Langmuir monolayers of heneicosanoic acid in the presence of calcium ions in the subphase. At very low pH the monolayer is unaffected by calcium ions; as the pH is increased, the head groups are pulled closer together and the chain tilt at zero pressure decreases. As a result, the phase transitions seen along the isotherms occur at lower pressures. When the isotherms become featureless, the chains are untilted at all pressures. At very high pH, a new untilted structure is observed.

引用

页码：1556 / 1559

页数：4

共 15 条

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