Adsorption kinetics of octanoyl-n-methylglucamine at air/solution interface

被引：10
|
作者：
Liu, JJ [1 ]
Zhang, CH
Yang, C
Messow, U
机构：
[1] Tianjin Univ, Sch Sci, Tianjin 300072, Peoples R China
[2] Univ Leipzig, Wilhelm Ostwald Inst Phys & Theoret Chem, D-04103 Leipzig, Germany
来源：
COLLOID JOURNAL | 2005年 / 67卷 / 03期
关键词：
D O I：
10.1007/s10595-005-0101-9
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：
By means of maximal bubble pressure method, the dynamic surface tensions of aqueous octanoyl-N-methylglucamine (Mega-8) solutions at 25 degrees C were measured. On the base of the experimental data, the adsorption kinetics of Mega-8 at air/solution interface was studied. In the short time range, the adsorption was diffusion-controlled and the diffusion coefficient was calculated. However, for the long time limit there was an adsorption barrier and the mixed diffusion-activation mechanism was proved.
引用
收藏
页码：337 / 340
页数：4
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