文献类型：期刊文献

英文题名：Synergistic Rheological Behavior of Mixed Micellar Solutions of Surfactin and Cetyl Trimethyl Ammonium Bromide

作者：Zhao, Jing[1];Fang, Bo[1];Guo, Yiguang[2]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Lab Chem Engn Rheol, Shanghai 200237, Peoples R China;[2]Shanghai Jahwa Co Ltd, Div Res & Dev, Shanghai 201702, Peoples R China

年份：2020

卷号：23

期号：3

起止页码：573

外文期刊名：JOURNAL OF SURFACTANTS AND DETERGENTS

收录：;EI(收录号：20200808188819);WOS:【SCI-EXPANDED(收录号:WOS:000526416000008)】；

语种：英文

外文关键词：Surfactin; Synergism action; Rheology; CTAB

摘要：This paper investigated the rheological properties of novel viscoelastic thickening micelle system formed by surfactin and cetyl trimethyl ammonium bromide (CTAB). The total concentration of surfactin and CTAB was maintained at 12 wt%. The rheological behavior of the surfactin/CTAB synergistic micelles with different mass ratio and pH was systematically investigated. For the surfactin/CTAB micellar system with a mass ratio varied from 1/11 to 4/8, the viscosity of the micelles rose to a maximum with increasing pH, and then decreased with a further increase of pH. When the mass ratio was surfactin:CTAB = 2.5:9.5 (pH 5.72), the maximum viscosity of the micelle solution reached 8170 mPa. s. Meanwhile, the viscosity curve of the surfactin/CTAB systems was described by the nonlinear co-rotational Jeffreys model. This work sets a rheological foundation for the application of surfactin/CTAB systems. The thixotropic loop area of the micelles was basically zero. Through viscoelasticity measurements, the results demonstrated that the appropriate surfactin/CTAB mass ratio would favor the stability of the network structure of the synergistic thickening system. The value of G ''(viscous modulus) is always higher than the value of G ' (elastic modulus).