文献类型：期刊文献

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

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

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

机构：[1]Shanghai Key Laboratory of Multiphase Materials Chemical Engineering,Lab of Chemical Engineering Rheology,Research Center of Chemical Engineering,East China University of Science and Technology

年份：2016

卷号：24

期号：2

起止页码：289

中文期刊名：Chinese Journal of Chemical Engineering

外文期刊名：中国化学工程学报（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2015_2016】；

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

语种：英文

中文关键词：Photorheological micelle;Polymerizable cationic surfactant4-Phenylazo benzoic acid;Rheological properties

外文关键词：阳离子表面活性剂;逆胶束;可聚合;苯甲酸;苯基偶氮;cdaac;紫外线照射;可见光照射

摘要：A photorheologically reversible micelle composed of polymerizable cationic surfactant n-cetyl dimethylallyl am- monium chloride （CDAAC） and trans-4-phenylazo benzoic acid （trans-ACA） 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/trans-ACA molar ratio of 1.4 forms viscoelastic micelles at 45 ℃. After 365 nm UV irradiation, the viscos- ities of micelle systems with different concentrations at fixed molar ratio of 1.4 are decreased by 85%-95%. The CDAAC/trans-ACA （14 mmol. L- 1/10 mmol. L- 1 ） micelle system exhibits shear thinning property and its viscos- ity is decreased obviously with the increases of UV irradiation time less than I h. The rheological process during LIV irradiation for CDAAC/trans-ACA （14 mmol- L- 1/10 mmol. L 1） micelle proves that viscosity, elastic modulus G＇ 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 nm visible light irradiation for 4 h, and the micelle can be cycled between low and high viscosity states by repetitive UV and visible light irradiations. The LIV-Vis spectra of CDAAC/trans-ACA micelle indicate that its photosensitive theological properties are related closely to photoisomerization of trans-ACA to c/s-ACA.
A photorheologically reversible micelle composed of polymerizable cationic surfactant n-cetyl dimethylallyl ammonium chloride(CDAAC) and trans-4-phenylazo benzoic acid(trans-ACA) 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/trans-ACA molar ratio of 1.4 forms viscoelastic micelles at 45 °C.After 365 nm UV irradiation,the viscosities of micelle systems with different concentrations at fixed molar ratio of 1.4 are decreased by 85%–95%.The CDAAC/trans-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 viscosity,elastic modulus G′ and viscous modulus G″ will reduce quickly with the UV light.Furthermore,the micelle system after 1 h UVirradiation is able to revert to its initial high viscosity with 460 nm visible light irradiation for 4 h,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/trans-ACA micelle indicate that its photosensitive rheological properties are related closely to photoisomerization of trans-ACA to cis-ACA.