物理化学学报 >> 2002, Vol. 18 >> Issue (05): 463-467.doi: 10.3866/PKU.WHXB20020517

研究简报 上一篇    下一篇

C12-s-C12•2Br和C12En混合水溶液的胶团化行为

赵剑曦;郑欧;游毅;陈荣杰   

  1. 福州大学化学系,福州 350002
  • 收稿日期:2001-10-30 修回日期:2001-12-24 发布日期:2002-05-15
  • 通讯作者: 赵剑曦 E-mail:jxzhao.colloid@fzu.edu.cn

Mixed Micellization of C12-s-C12•2Br and C12En in Aqueous Solution

Zhao Jian-Xi;Zheng Ou;You Yi;Chen Rong-Jie   

  1. Department of Chemistry, Fuzhou University, Fuzhou 350002
  • Received:2001-10-30 Revised:2001-12-24 Published:2002-05-15
  • Contact: Zhao Jian-Xi E-mail:jxzhao.colloid@fzu.edu.cn

摘要: 季铵盐二聚表面活性剂C12sC12•2Br(s=2、3、4、6)和非离子表面活性剂C12E10或C12E23在水溶液中生成混合胶团.其临界胶团总浓度cmcT值介于二元复配体系中各组分的临界胶团浓度和之间.当添加少量非离子型表面活性剂(在水溶液中的摩尔分数α2=0.1)时,混合胶团中C12E10或C12E23的摩尔分数均已超过0.35;随着溶液中非离子型表面活性剂含量的增大,混合胶团中逐渐以C12E10或C12E23成分为主.

关键词: 季铵盐二聚表面活性剂, C12E10, C12E23, 混合胶团

Abstract: Mixed micellization of quaternary ammonium dimeric surfactants, C12sC12•2Br(s=2,3,4,6), and a nonionic surfactant C12E10 or C12E23 in aqueous solution have been investigated using conductivity measurement. The results show that C12sC12•2Br and C12E10 or C12E23 form mixed micelles. The values of the total critical micelle concentration lie always among and , which are the critical micelle concentrations for individual surfactant 1 and surfactant 2, respectively. Addition of a few nonionic surfactant, for example α2=0.1, the molar fraction of C12E10 or C12E23 in the mixed micelle exceeds 0.35. With further increasing the concentration of the nonionic surfactant in solution, the main component in the mixed micelles becomes gradually C12E10 or C12E23.

Key words: Quaternary ammonium dimeric surfactants, C12E10, C12E23, Mixed micelle