稀释法测定CTAB/醇/正庚烷/水四组份微乳液体系的结构参数  

The Structural Parameters were Determinated by Dilution Method to Microemulsion System of the Four Groups of CTAB/Alcohol/Heptane/Water

作　　者：许春晓[1] 刘晓红[1] 柯春兰[1] 章小明[1] 

机构地区：[1]南昌大学环境与化学工程学院,江西南昌330031

出　　处：《广东化工》2011年第1期166-169,共4页Guangdong Chemical Industry

摘　　要：采用稀释法求得CTAB/醇/正庚烷/水四组份微乳液体系在25℃时的结构参数:水内核半径Rw、颗粒有效半径Re、界面层厚度l、平均聚集数n、颗粒总数Nd以及分散相所占的总界面面积Ad。结果表明:含水量增大,醇从连续相转移到界面层的自由能Gcθ→i降低,对微乳液体系的稳定不利,含水量越低,有利于微乳液的形成和稳定;醇碳链的增长,Gcθ→i线性递增,有利于微乳液的形成和稳定,为运用该体系提供了理论依据。At 25℃, the structural paramcters of the W/O microemulsion systems CTAB /alcohoFheptane/water with different Wo, the radius of inner water droplet Rw, the effective radius of particle Re, the length of interface l, the averagc aggregation number of surfactant n, the total number of particles Nd and the total interfacial area of dispersed phase Ad, were obtained by means of dilution method and theoretical calculation. The results showed that the Rw and Re increases with the increase of Wo. As the water content increases, the free energy Gc→i reduces that was not advantageous to the stability of the microemulsion systems. As the number of carbon atom of the alcohols increased Gc→i increases that is advantageous to the stability of the system.

关 键 词：微乳液 稀释法 结构参数 

分 类 号：O65[理学—分析化学]