期刊
NANOMATERIALS
卷 11, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/nano11061390
关键词
pH-responsive; nanoemulsions; dynamic covalent bond
类别
资金
- National Natural Science Foundation of China [22002193, 51803244]
- Key Scientific Research Projects of Higher Education Institutions in Henan Province [21A540005]
- Apparel Council Scientific and Technological Guiding Projects [2020059]
This study introduces a surfactant T-DBA with dynamic imine bonds that can control the stability of nanoemulsions in response to pH, allowing for the turning on and off of nanoemulsions. Such intelligent control could have applications in processes like heavy oil recovery and interfacial reactions.
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.
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