Interaction between Anionic Dye ECAB, Micelle of Triton X-100 in Aqueous Solution and Hemimicelie at Solid/Liquid Interface
Title:
Interaction between Anionic Dye ECAB, Micelle of Triton X-100 in Aqueous Solution and Hemimicelie at Solid/Liquid Interface
Author:
Gao, Yueying Yu, Chunsong An, Guohong
Appeared in:
Journal of dispersion science and technology
Paging:
Volume 21 (2000) nr. 3 pages 279-304
Year:
2000
Contents:
Interaction between dye (ECAB), nonionic surfactant (TX-100) micelle in aqueous solution and TX-100 hemimicelie at solid (SiO2)/liquid interface has been investigated quantitatively. There are linear relationships between concentrations of free ECAB(Ca), ECAB bound with TX-100 micelles in solution(Cm) and ECAB bound with TX-100 hemimicelles at interface of solid/liquid(Chm). The slopes of the three straight lines are 0.32 for Chm∼Ca -1.32 for Cm∼Ca and -1.00 for (Cm+Chm∼Ca respectively. The linear relationships can be described by three linear equations as follows: Chm=0.32 (Ca-O.88×10-5),Cm.=4.0×10-5-l.33 Ca and Chm+Cm=3.742×l0-5-Ca,. It is inferred that the interaction between ECAB, TX-100 micelles and TX-100 hemimicelles is essentially partition of ECAB molecules in solution, TX-100 micelles and hemimicelles. The concentration of ECAB bound with TX-100 micelles well as electronic repulsion. Additionally, A quantitative method to determine adsorbance of surfactant TX-100 on silica gel by spectroscopy in coadsorption conditions of dye (ECAB) and TX-100 was proposed.