Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (5): 810-814. Previous Articles     Next Articles

Original Articles

添加剂对双子表面活性剂DYNOL-604浊点的影响

陈文君;顾强;姚发业;李干佐   

  1. 山东大学,济南(250100)
  • 发布日期:2002-05-15

Effect of Alcohol and Ion-Surfactant on the Cloud Point Dynol-604

Chen Wenjun;Gu Qiang;Yao Faye;Li Ganzuo   

  1. Key Lab for Colloid and interface Chemistry of State Education Ministry, Shandong University,Jinan(250100);Key Lab for Colloid and interface Chemistry of State Education Ministry, Shandong University, Jinan(250100anzuo)
  • Published:2002-05-15

The effect of a series of alcohols and ionic surfactants on the cloud point (CP) of nonionic surfactant Dynol-604 has been investigated. The result show that the addition of SDS and CTAB makes the cloud point of Dynol-604 increases greatly and the influence of alcohols on the cloud point of Dynol-604 is complex. When the alcohol is added into the Dynol-604 solution, the system appears double cloud points which are named "upper limit CP" and "lower limit CP" respectively. The phenomenon is discussed using the theory of Cohesion Energy Ratio. The system becomes transparent from turbidity when the temperature is above the upper limit CP. The measurement of the self- diffusion coefficients by the Pulse Field Gradient Spin-Echo Method (PFGSE-NMR) for the upper limit CP solution is carried out and we can conclude that the system is a bicontinuous microemulsion.

Key words: SURFACTANTS, DIFFUSION COEFFICIENTS, DIFFUSION COEFFICIENTS, 1HNMR

CLC Number: