文献类型：期刊文献

英文题名：Rheology on novel viscoelastic trimeric octadecyl zwitterionic surfactant micelle solutions

作者：Xu, Wenting[1];Han, Xiaoyang[1];Fang, Bo[1,2];He, Jinlan[1];Wu, Huinan[1];Xin, Hui[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Lab Chem Engn Rheol, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Res Ctr Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Lab Chem Engn Rheol, Shanghai, Peoples R China

年份：2023

卷号：26

期号：5

起止页码：667

外文期刊名：JOURNAL OF SURFACTANTS AND DETERGENTS

收录：;EI(收录号：20231713944634);WOS:【SCI-EXPANDED(收录号:WOS:000970956700001)】；

基金：China National Petroleum Corporation,Grant/Award Number: 2020B-4120; National Science and Technology Major Project of China, Grant/Award Number:2017ZX05023003

语种：英文

外文关键词：micelle solution; rheology; trimeric zwitterionic surfactant; viscoelasticity

摘要：In this work, a novel trimeric octadecyl zwitterionic surfactant (TOCC) was successfully synthesized. TOCC was compounded with sodium salicylate (NaSal) for an optimized formulation to form viscoelastic micelles. The effects of NaSal concentration, pH, and temperature on the rheological properties of TOCC and TOCC/NaSal micelle solutions were investigated. The flow curves for both TOCC and TOCC/NaSal micelle solutions can be fitted with the Carreau-Yasuda model. Zero shear viscosity of TOCC/NaSal micelle solution increased and then decreased with increasing NaSal concentration, and the same trend was observed for viscoelasticity. Some micelle solutions exhibited significant thixotropy with stress overshoot. The optimal composition of the TOCC/NaSal micelle solution obtained was 5.0/0.5 wt%. Frequency sweep in the form of Cole-Cole plots indicated that the viscoelastic modulus of the TOCC/NaSal micelle solution fitted the Maxwell model at low and medium frequencies. With increasing pH, 5.0 wt% TOCC micelle solution had the maximum zero shear viscosity at pH = 6.9. The steady-state viscosities of different concentrations of TOCC micelle solutions reached their maximum at neutral conditions (pH = 6.5 similar to 7.0). Viscoelastic modulus of 5.0 wt% TOCC and TOCC/NaSal (5.0/0.5 wt%) micelle solutions decreased with increasing temperature, and thermal thixotropy was observed in both micelle solutions. The novel TOCC and TOCC/NaSal micelle solutions enrich the variety of trimeric surfactants and viscoelastic micelle solutions. This study provides a rheological reference for the applications of viscoelastic trimeric surfactants in smart materials and oil fields.