表面活性剂复配混合胶束对酯碱性水解反应的影响

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (10): 1605.

表面活性剂复配混合胶束对酯碱性水解反应的影响

曾宪诚¹, 李启麟¹, 陈民助¹, 王茜¹, 秦自明¹, 邹萍¹, 李干佐², 皇起中³

1. 四川大学化学系, 成都, 610064;
2. 山东大学化学院;
3. 四川师范大学化学系

收稿日期:1994-11-19 修回日期:1995-03-29 出版日期:1995-10-24 发布日期:1995-10-24
通讯作者: 曾宪诚,男,56岁,教授.
作者简介:曾宪诚,男,56岁,教授.
基金资助:
国家自然科学基金

The Effect of Mixed Micelle of Surfactant on the Alkaline Hydrolysis of Esters

ZENG Xian-Cheng¹, LI Qi-Lin¹, CHEN Min-zhu¹, WANG Qian¹, QIN Zi-Ming¹, Zou Ping¹, LI Gan-Zuo², HUANG Qi-Zhong³

1. Department of Chemistry, Sichuan University, Chengdu, 610064;
2. Chem. College, Shandong Univ.;
3. Chem.Dept., Sichuan Normal Univ.

Received:1994-11-19 Revised:1995-03-29 Online:1995-10-24 Published:1995-10-24

摘要/Abstract

摘要： 应用紫外分光光度法和热动力学法研究了芳香酸酯和正脂肪酸乙酯在表面活性剂复配混合胶束(SDS-Brij35,DTAB-Brij-35,TTAB-Brij35,CTAB-Brij35,CTAB-TritonX-100,SDS-TritonX-100)中的碱性水解反应。复配胶束对酯的碱性水解反应起禁阻作用,其禁阻作用比单一胶束的禁阻作用强,并讨论了复配胶束对酯碱解起禁阻作用的原因。

关键词: 表面活性剂复配混合胶束, 酯碱性水解, 禁阻作用

Abstract: The alkaline hydrolyses of aromatic and normal aliphatic acid esters have been studied at 25℃ in mixed micelles of surfactants(SDS-Brij 35,DTAB-Brij 35, TTABBrij 35, CTAB-Brij 35, CTAB-Triton X-100, SDS-Triton X-100)with spectrophotometry and the method of thermokinetics in this paper. The critical micellar concentrations of the corresponding systems have been measured with spectrophotometry. k_1min micellar psuedophase has been calculated.The ratios of k_1mto k_1wfor all mixed micellar systems investigated are less than 1.The alkaline hydrolyses of the esters are inhibited by them. The inhibtion of the mixed micellar systems is stronger than that of corresponding single micellar systems because micropolarity of compact Stern layer of mixed micelles is lower.

Key words: Mixed micelle of surfactants, Alkaline hydrolysis of ester, Inhibition

TrendMD:

曾宪诚, 李启麟, 陈民助, 王茜, 秦自明, 邹萍, 李干佐, 皇起中. 表面活性剂复配混合胶束对酯碱性水解反应的影响. 高等学校化学学报, 1995, 16(10): 1605.

ZENG Xian-Cheng, LI Qi-Lin, CHEN Min-zhu, WANG Qian, QIN Zi-Ming, Zou Ping, LI Gan-Zuo, HUANG Qi-Zhong. The Effect of Mixed Micelle of Surfactant on the Alkaline Hydrolysis of Esters. Chem. J. Chinese Universities, 1995, 16(10): 1605.