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高等学校化学研究 ›› 2018, Vol. 34 ›› Issue (3): 440-443.doi: 10.1007/s40242-018-8046-9

• Articles • 上一篇    下一篇

Surface Properties and Etherification in Microemulsion Systems of Novel Brönsted Acid Surfactants

YANG Mingqing, WEI Zhonglin, DUAN Haifeng, LIN Yingjie   

  1. College of Chemistry, Jilin University, Changchun 130012, P. R. China
  • 收稿日期:2018-02-02 修回日期:2018-03-08 出版日期:2018-06-01 发布日期:2018-03-26
  • 通讯作者: WEI Zhonglin, LIN Yingjie E-mail:zlwei@jlu.edu.cn;linyj@jlu.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China(No.51373067).

Surface Properties and Etherification in Microemulsion Systems of Novel Brönsted Acid Surfactants

YANG Mingqing, WEI Zhonglin, DUAN Haifeng, LIN Yingjie   

  1. College of Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2018-02-02 Revised:2018-03-08 Online:2018-06-01 Published:2018-03-26
  • Contact: WEI Zhonglin, LIN Yingjie E-mail:zlwei@jlu.edu.cn;linyj@jlu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.51373067).

摘要: Novel Brönsted acid-surfactants with different alkyl chains were synthesized via a two-step process, and their surface properties were studied. The critical micelle concentration(cmc), surface tension at the cmc(γcmc), and ability of these compounds to lower the surface tension by 0.02 N/m(C20 and pC20) were investigated at 25 and 40℃. The molecular architecture of the compounds strongly influenced these physicochemical parameters. The ability of these compounds to lower surface tension was found to be good. Etherification in microemulsions formed by these surfactants as well as dodecylbenzenesulfonic acid(DBSA) was performed; surfactants 3a and 3b were found to be much more efficient than dodecylbenzenesulfonic acid(DBSA).

关键词: Brönsted acid surfactant, Microemulsion, Critical micelle concentration(cmc), Etherification

Abstract: Novel Brönsted acid-surfactants with different alkyl chains were synthesized via a two-step process, and their surface properties were studied. The critical micelle concentration(cmc), surface tension at the cmc(γcmc), and ability of these compounds to lower the surface tension by 0.02 N/m(C20 and pC20) were investigated at 25 and 40℃. The molecular architecture of the compounds strongly influenced these physicochemical parameters. The ability of these compounds to lower surface tension was found to be good. Etherification in microemulsions formed by these surfactants as well as dodecylbenzenesulfonic acid(DBSA) was performed; surfactants 3a and 3b were found to be much more efficient than dodecylbenzenesulfonic acid(DBSA).

Key words: Brönsted acid surfactant, Microemulsion, Critical micelle concentration(cmc), Etherification