文献类型：期刊文献

英文题名：Photorheologically reversible micelle composed of polymerizable cationic surfactant and 4-phenylazo benzoic acid

作者：Chen, Jie[1];Fang, Bo[1];Jin, Hao[1];Yu, Licheng[1];Tian, Meng[1];Li, Kejing[1];Jin, Leiping[1];Yang, Mo[1]

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

年份：2016

卷号：24

期号：2

起止页码：289

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20160501870762);WOS:【SCI-EXPANDED(收录号:WOS:000371897000012)】；

基金：Supported by the National Natural Science Foundation of China (21273072).

语种：英文

外文关键词：Photorheological micelle; Polymerizable cationic surfactant; 4-Phenylazo benzoic acid; Rheological properties

摘要：A photorheologically reversible micelle composed of polymerizable cationic surfactant n-cetyl dimethylallyl ammonium chloride (CDAAC) and tran.s-4-phenylazo benzoic acid (trans-RCA) was prepared. The effects of molar ratio of CDAAC/trans-ACA, time of UV and visible light irradiation and temperature on the rheological properties of micellar system were investigated. The results show that before UV irradiation the system with an optimum CDAAC, wans-ACA molar ratio of 1A forms viscoelastic micelles at 45 degrees C. After 365 nm UV irradiation, the viscosities of micelle systems with different concentrations at fixed molar ratio of 14 are decreased by 85114-95114. The CDAAC, wans-ACA (14 mmoL.L-1/10 mmol.L-1) micelle system exhibits shear thinning property and its viscosity is decreased obviously with the increases of UV irradiation time less than 1 h. The rheological process during UV irradiation for CDAAC/trans-ACA (14 mmol.L-1/10 mmol.L-1) micelle proves that viscosi[y, elastic modulus C' and viscous modulus G '' will reduce quickly with the UV light. Furthermore, the micelle system after 1 h UV irradiation is able to revert to its initial high viscosity with 460 rim visible light irradiation for 4h, and the micelle can be cycled between low and high viscosity states by repetitive UV and visible light irradiations. The UV-Vis spectra of CDAAC/tran.s-ACA micelle indicate that its photosensitive rheological properties are related closely to photoisomerization of trans-RCA to cis-ACA. (C) 2015 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.