THERMODYNAMIC STUDY ON PENETRATION OF PENTADECANOIC ACID MONOLAYER BY DODECYLAMMONIUM CHLORIDE

被引:1
作者
HAYAMI, Y [1 ]
ARATONO, M [1 ]
URYU, S [1 ]
MOTOMURA, K [1 ]
MATUURA, R [1 ]
机构
[1] KYUSHU UNIV 33,FAC SCI,DEPT CHEM,FUKUOKA 812,JAPAN
关键词
D O I
10.1246/bcsj.56.1950
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In order to show that thermodynamic treatment is useful in the study on the monolayer penetration, the surface tension has been measured with the system consisting of pentadecanoic acid monolayer and dodecylammonium chloride solution. Applying the thermodynamic equations to the experimental data, the surface density of dodecylammonium chloride, and entropy and energy of penetration have been estimated numerically. It has been found that the surface density, entropy, and energy all decrease with increasing the concentration of film-forming substance. Therefore, it has been concluded that the penetration of monolayer of this system is caused by the decrease of the energy of penetration which compensates the decrease of the entropy of penetration.
引用
收藏
页码:1950 / 1953
页数:4
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