Systems based on nonionic amphiphilic compounds: aggregation and catalytic properties

被引：2
|
作者：
Ablakova, Yu. R. [1 ]
Mirgorodskaya, A. B. [1 ]
Zakharova, L. Ya. [1 ]
Valeeva, F. G. [1 ]
机构：
[1] Russian Acad Sci, AE Arbuzov Organ & Phys Chem Inst, Kazan Res Ctr, Kazan 420088, Russia
来源：
RUSSIAN CHEMICAL BULLETIN | 2010年 / 59卷 / 04期
关键词：
nonionic surfactants; cationic surfactants; block copolymers; aggregation; p-nitrophenyl laurate; solubilizaton; hydrolysis; kinetics; NUCLEOPHILIC-SUBSTITUTION; MICELLAR SYSTEM; SN2; REACTIONS; MICELLIZATION;
D O I：
10.1007/s11172-010-0162-8
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The micellization properties, solubilization capability, and catalytic effect of conventional nonionic surfactants and amphiphilic compounds of oligomeric (Tyloxapol) and polymeric (Synperonic F-68, Pluronic F-127) structure were compared. The systems studied demonstrate a marked catalytic effect toward basic hydrolysis of p-nitrophenyl laurate, which exceeds the effect of aqueous alkali solutions by two orders of magnitude. Correlations between the solubilization capacity of aggregates and their catalytic effect were observed. The maximum efficiency was found for the Tyloxapol solution. The synergetic enhancement of the catalytic effect was observed for the mixed Tyloxapol-cetyltrimethylammonium bromide systems in the presence of small amounts of cationic surfactant.
引用
收藏
页码：784 / 789
页数：6
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