pH-Responsive Nanoemulsions Based on a Dynamic Covalent Surfactant

Nanomaterials

Dejun Sun¹  Lulu Ren¹  Wenwen Di¹  Jianxin He²  Lulu Tian²  Weili Shao²  Dongxu Lu²  Gaihuan Ren²  Bo Li²  Pan Zhang² 

[1] Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China;Textile and Garment Industry of Research Institute, Zhongyuan University of Technology, Zhengzhou 450007, China;

关键词: pH-responsive;    nanoemulsions;    dynamic covalent bond;   

DOI  :  10.3390/nano11061390

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown