日用化学工业2017，Vol.47Issue(6)：301-306,6.DOI:10.13218/j.cnki.csdc.2017.06.001
一种氧化胺表面活性剂pH响应蠕虫状胶束流变行为研究
Study on rheological behaviors of pH-responsive wormlike micelles formed by an amine oxide surfactant
张萌 1齐丽云 1龙宇 1王济远 1齐松竹 1黄媛琳 1方雪瑾1
作者信息
- 1. 江南大学化学与材料工程学院食品胶体与生物技术教育部重点实验室,江苏无锡 214122
- 折叠
摘要
Abstract
The aggregation behaviors of an amphoteric surfactant,α -carboxyl tridecyl dimethylamine oxide (CTAO)in aqueous solution at different pH values were examined by rheological method. Results show that wormlike micelles would form in CTAO aqueous solutions within concentration 55-125 mmol/L and pH value 6. 0-6. 7 at 25-60 ℃ without any additive. Their rheological behaviors comply with Maxwell model and the zero-shear viscosity can achieve 26. 5 Pa·s. In case the pH value of the solution is higher than 7,form of the molecules of the surfactant in the solution changes and the repulsion between the molecules increases which results in the transition from wormlike micelles to spherical micelles. Meanwhile,the viscosity of the CTAO solution at pH value 7 is close to that of water and the zero-shear viscosity is about 1/4000 of the solution with pH value 6. 2 . The pH - responsive micellar systems is obtained by a single - component surfactant CTAO,while displays distinct advantages of simple,narrow responsive pH value range,easy preparation and remarkable change of rheological properties.关键词
α-羧基十三烷基二甲基氧化胺/蠕虫状胶束/流变行为/氢键作用/pH响应Key words
α - carboxyl tridecyl dimethylamine oxide/wormlike micelles/rheological behavior/hydrogen bongding/pH-responsive分类
化学工程引用本文复制引用
张萌,齐丽云,龙宇,王济远,齐松竹,黄媛琳,方雪瑾..一种氧化胺表面活性剂pH响应蠕虫状胶束流变行为研究[J].日用化学工业,2017,47(6):301-306,6.
