文献类型：期刊文献

英文题名：Rheological property and rheokinetics of novel photogelling fluids

作者：Liu, Qingbin[1];Jin, Hao[1];Fang, Bo[1,2];Xu, Zhiliang[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, Lab Chem Engn Rheol, Res Ctr Chem Engn, Shanghai, Peoples R China

年份：2018

卷号：39

期号：11

起止页码：1565

外文期刊名：JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20181204923261);WOS:【SCI-EXPANDED(收录号:WOS:000446505200004)】；

语种：英文

外文关键词：Cationic gemini surfactant; photosensitive; rheokinetics

摘要：A novel photorheological fluid composed of cationic Gemini surfactant N, N'-bis (octadecyl dimethyl)-1, 2-dichloride-propyl ammonium salt (C-18-3-C-18) and trans-ortho-methoxycinnamic acid (trans-OMCA) was investigated. When C-18-3-C-18 and trans-OMCA are mixed in equimolar quantities, the result is a low-viscosity Newtonian fluid with no thixotropy. After irradiation by UV light (365 nm), trans-OMCA is converted to cis-OMCA, and in turn, the solution undergoes more than 50 fold increase in the relative viscosity and exhibits shear thinning and thixotropy. The viscosity rise is associated with the formation of wormlike micellar network in the solution, which was confirmed by cryo-scanning electron microscopy (cryo-SEM). Furthermore, the rheokinetics process of the C-18-3-C-18/trans-OMCA solutions during UV irradiation was studied and rheokinetics equation was established, which can well describe the dynamic changing of the rheological properties. Critical packing parameter was introduced to explain the mechanism of photo-induced micelle transition. [GRAPHICS] .