微乳液
动态光散射
化学
相图
共晶体系
化学工程
胶体
肺表面活性物质
相(物质)
溶剂
色谱法
材料科学
有机化学
纳米颗粒
合金
工程类
生物化学
作者
Junhao Jing,Jie Qi,Yang Yang,Wenjian Yue,Na Wang,Xiaojiang Li,Hongsheng Lu
出处
期刊:Langmuir
[American Chemical Society]
日期:2023-05-03
卷期号:39 (19): 6730-6739
被引量:2
标识
DOI:10.1021/acs.langmuir.3c00205
摘要
Hydrophobic deep eutectic solvents (HDESs) have been applied to colloidal systems such as microemulsions, despite the development of stimulus-responsive HDESs still being in a preliminary stage. Here, menthol and indole were hydrogen bonded to form CO2-responsiveness HDES. A surfactant-free microemulsion constituted of HDES (menthol-indole) as the hydrophobic phase, water as the hydrophilic phase, and ethanol as the double solvent was demonstrated to be CO2- and temperature-responsive. Dynamic light scattering (DLS) proved the single-phase region of the phase diagram, while conductivity and polarity probing techniques confirmed the kind of microemulsion. The ternary phase diagram and DLS methods were used to investigate the responsiveness of CO2 and effect temperature on the microemulsion drop size and behavior of the phase of the HDES/water/ethanol microemulsion. The findings revealed that when temperature increased, the homogeneous phase region increased. The droplet size in the homogeneous phase region of the associated microemulsion may be reversibly and accurately adjusted by adjusting the temperature. Surprisingly, a slight temperature change can cause a significant phase inversion. Furthermore, in the system, there was no demulsification in time for the CO2/N2 responsiveness process but rather the production of a homogeneous and pellucid aqueous solution.
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