欢迎访问《日用化学工业(中英文)》,今天是

日用化学工业 ›› 2015, Vol. 45 ›› Issue (8): 421-424.doi: 10.13218/j.cnki.csdc.2015.08.001

• 基础研究 •    下一篇

两性双子表面活性剂的合成及性能研究

谢郢, 赖璐   

  1. 长江大学 化学与环境工程学院,湖北 荆州 434023
  • 收稿日期:2015-03-26 修回日期:2015-08-01 出版日期:2015-08-22 发布日期:2019-04-10
  • 通讯作者: 赖 璐,副教授,电话:13697150326,E-mail:lailu@aliyun.com。
  • 作者简介:谢 郢(1976-),男,湖北荆州人,本科,实验师。
  • 基金资助:
    国家自然科学基金青年基金资助项目(21403017); 中国石油科技创新基金资助项目(2011D-5006-0211)

Synthesis and properties of amphoteric Gemini surfactant

XIE Ying, LAI Lu   

  1. College of Chemistry and Environmental Engineering,Yangtze University,Jingzhou,Hubei 434023,China
  • Received:2015-03-26 Revised:2015-08-01 Online:2015-08-22 Published:2019-04-10

摘要: 以二乙胺盐酸盐、十二烷基二甲基叔胺、环氧氯丙烷和丙磺酸内酯等为原料,合成了一种两性型双子(Gemini)表面活性剂,并采用红外光谱和元素分析对合成产物进行结构表征;采用滴体积法测定合成产物的表面张力曲线;采用电导率法测定并计算了合成产物的胶束化热力学参数。结果表明,合成产物的临界胶束浓度(cmc)和cmc时的表面张力分别为8×10-5 mol/L和38.57 mN/m,且随着温度的升高,产物溶液的cmc升高。胶束化过程的ΔHmθ为负值,说明胶束化过程是一个放热过程;胶束化过程的ΔSmθ为正值,说明胶束化过程是一个熵驱动过程。

关键词: 两性双子表面活性剂, 表面活性, 胶束化热力学

Abstract: A kind of amphoteric Gemini surfactant was synthesized with diethylamine hydrochloride,epichlorohydrin,dodecyl dimethylamine and propanesultone as starting materials.The chemical structure of the synthesis product was characterized by IR and elemental analysis.The surface activity vs.concentration plot of the synthesis product was investigated by drop volume method,and the thermodynamic parameters were calculated based upon measurement of electrical conductivity of the synthesis product.Results showed that the critical micelle concentration (cmc) of the synthesis product is 8×10-5 mol/L,and the surface tension at cmc minimizes to 38.57 mN/m.Moreover,with the increasing of temperature,the cmc of the synthesis product increases.The ΔHmθ of micellization process is negative,indicating that the process is an exothermic process.The ΔSmθ is positive,which suggests that the micellization process is an entropy-driven process.

Key words: amphoteric Gemini surfactant, surface activity, micellization thermodynamics

中图分类号: 

  • TQ423.3