基于动态共价表面活性剂的pH响应性纳米乳液
pH-Responsive Nanoemulsions Based on a Dynamic Covalent Surfactant.
作者信息
Ren Gaihuan, Li Bo, Ren Lulu, Lu Dongxu, Zhang Pan, Tian Lulu, Di Wenwen, Shao Weili, He Jianxin, Sun Dejun
机构信息
Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, China.
Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China.
出版信息
Nanomaterials (Basel). 2021 May 25;11(6):1390. doi: 10.3390/nano11061390.
Developing solid-free nanoemulsions with pH responsiveness is desirable in enhanced oil recovery (EOR) applications. Here, we report the synthesis of an interfacial activity controllable surfactant (T-DBA) through dynamic imine bonding between taurine (T) and p-decyloxybenzaldehyde (DBA). Instead of macroemulsions, nanoemulsions can be prepared by using T-DBA as an emulsifier. The dynamic imine bond of T-DBA enables switching between the active and inactive states in response to pH. This switching of interfacial activity was used to gate the stability of nanoemulsions, thus enabling us to turn the nanoemulsions off and on. Using such dynamic imine bonds to govern nanoemulsion stability could enable intelligent control of many processes such as heavy oil recovery and interfacial reactions.
开发具有pH响应性的无固体纳米乳液在提高采收率（EOR）应用中是很有必要的。在此，我们报道了通过牛磺酸（T）和对癸氧基苯甲醛（DBA）之间的动态亚胺键合合成一种界面活性可控的表面活性剂（T-DBA）。使用T-DBA作为乳化剂可制备纳米乳液，而不是宏观乳液。T-DBA的动态亚胺键能够响应pH在活性和非活性状态之间切换。这种界面活性的切换被用于控制纳米乳液的稳定性，从而使我们能够打开和关闭纳米乳液。利用这种动态亚胺键来控制纳米乳液的稳定性，可以实现对许多过程的智能控制，如稠油采收和界面反应。
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