胶束
阳离子聚合
傅里叶变换红外光谱
化学工程
肺表面活性物质
化学
胶束溶液
水溶液
微乳液
低临界溶液温度
光谱学
材料科学
有机化学
聚合物
共聚物
工程类
物理
量子力学
作者
Dongmei Lv,Qi Liu,Chenyong Wang,Huijun Wu,Naiqin Zhao,Bo Yin,Xilian Wei,Jing Li
出处
期刊:Soft Matter
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:18 (28): 5249-5260
被引量:4
摘要
Over the recent years, intelligent, multi-responsive micelles have received considerable attention due to their promising application in a variety of fields, including biomedical technology, drug delivery, separation, and catalysis. However, the design of such systems with controlled self-assembly is challenging both experimentally and theoretically and is still in the nascent stage. In this study, a novel dual-stimuli triggered wormlike micellar solution is prepared by mixing cationic surfactants 3-hexadecyloxy-2-hydroxypropyltrimethylammonium bromide (R16HTAB) and sodium hydrogen phthalate (SHP). The viscoelasticity, aggregate morphology, and pH- and thermo-responsive behavior of the micellar solution are examined by rheological measurements, cryogenic-transmission electron microscopy (cryo-TEM), nuclear magnetic resonance (1H NMR) spectroscopy, and Fourier transform infrared (FTIR) spectroscopy. The dual-sensitive fluid can be switched between a water-like state and a gel-like state by adjusting the pH and temperature. The variations in the flowing behavior are ascribed to the microstructural transition between wormlike micelles, short cylindrical micelles, and spherical micelles. Furthermore, based on the experimental results, dual-responsive behavior of the mixed solution is attributed to the different binding modes between SHP and the surfactant with the variation in the pH and temperature. We hope that the proposed system provides a new route for developing multi-stimuli-responsive materials that are capable of adapting to local environmental variations.
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