阴离子表面活性剂SDS对氯乙酸酯碱性水解的影响

Effect of Anionic Surfactant Micelles SDS on the Alkaline Hydrolysis of Chloroacetates

采用传统的电导法研究了不同浓度（5-70 mmol/L）阴离子表面活性剂十二烷基磺酸钠（SDS）条件下氯乙酸甲酯、氯乙酸乙酯（ECA）及氯乙酸叔丁酯（t-BCA）的碱性水解二级反应的速率常数。试验结果表明,表面活性剂SDS对氯乙酸酯的水解起禁阻作用,并初步讨论了产生禁阻作用的原因。

The alkaline hydrolysis of chloroacetates, such as methyl chloroacetate （MCA）, ethyl chloroacetate （ECA）, tert-butyl chloroaeetate （t-BCA）, were investigated at different concentrations of anionic surfactant micelle of sodium dodecyl sulfate （from 5 mmol/L to 70 mmol/L） with the traditional method of conductant. The results indicated that SDS inhibited the alkaline hydrolysis of chloroacetates. The principle for the inhibition effect was discussed.