欢迎访问《日用化学工业(中英文)》,今天是

日用化学工业(中英文) ›› 2023, Vol. 53 ›› Issue (11): 1250-1256.doi: 10.3969/j.issn.2097-2806.2023.11.002

• 基础研究 • 上一篇    下一篇

叔胺型响应表面活性剂的合成及性能研究

张鑫,张光华*(),孙棋,李慧,唐明旋,郭泽华   

  1. 陕西科技大学 陕西省轻化工助剂重点实验室,陕西 西安 710021
  • 收稿日期:2023-05-14 修回日期:2023-10-08 出版日期:2023-11-22 发布日期:2023-11-21
  • 基金资助:
    陕西省科技厅重点研发项目(2023-YBGY-324);陕西省科技厅重点研发项目(2021CGBX-22);陕西省教育厅项目(20JC005)

Study on the synthesis and performance of a responsive surfactant of tertiary amine type

Zhang Xin,Zhang Guanghua*(),Sun Qi,Li Hui,Tang Mingxuan,Guo Zehua   

  1. Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi’an, Shaanxi 710021, China
  • Received:2023-05-14 Revised:2023-10-08 Online:2023-11-22 Published:2023-11-21
  • Contact: *Tel.: +86-13992099270, E-mail: zhanggh@sust.edu.cn.

摘要:

以油酸和N, N-二甲基-1,3-丙二胺为原料,氟化钠为催化剂,合成了一种具有CO2响应性的长链叔胺(油酸酰胺丙基二甲基叔胺(DMOA)),测定了其通入CO2和N2下的电导率,证实了合成的DMOA溶液具有CO2响应性能。测定了在通入CO2下DMOA与反离子复配的表面张力,发现将DMOA与二元反离子草酸钠复配能显著降低溶液的表面张力。研究了DMOA与草酸钠复配体系的黏度的CO2响应性能,结果表明,复配体系能够显著提高体系的黏度,并具有CO2响应性和循环可逆性。研究了复配体系的起泡性能和在石蜡膜上的接触角,发现在通入了CO2条件下,复配体系能够降低起泡性能和与疏水表面的接触角。

关键词: 开关表面活性剂, CO2开关, 可逆响应, 叔胺基, 反离子

Abstract:

A CO2-responsive surfactant with good surface activity was obtained, which was a long-chain tertiary amine (DMOA) with CO2 responsiveness. It was synthesized by bimolecular nucleophilic substitution reaction using oleic acid and N, N-dimethyl-1,3-propanediamine as raw materials and sodium fluoride as catalyst. Its conductivity was measured on a conductivity meter under the passage of CO2 and N2, and the experimental results confirmed that the solution of synthesized DMOA had CO2-responsive properties. The surface tension of DMOA compounded with counterions was measured and its critical micelle concentration was determined. It was found that the combination of DMOA with dicarboxylic counterions such as sodium oxalate could significantly reduce the surface tension of the solution, and the critical micelle concentration of the compounded system was also reduced compared with other systems. The CO2-responsive behavior of the viscosity of the DMOA-sodium oxalate system was studied on a rheometer. The results showed that the compounded system could significantly increase the viscosity of the system, exhibiting CO2-responsiveness and cyclic reversibility. The foaming performance of the compounded system was investigated, and the contact angle between its aqueous solution and paraffin wax was investigated. It was found that the compounded system exhibited lower foaming performance but smaller contact angle on lipophilic surface after the introduction of CO2.

Key words: switchable surfactant, CO2 switching, reversible response, tertiary amine group, counter-ion

中图分类号: 

  • TQ423