Honaryar Houman, Amirfattahi Saba, Nguyen Duoc, Kim Kyungtae, Shillcock Julian C, Niroobakhsh Zahra
Division of Energy, Matter, and Systems, School of Science and Engineering, University of Missouri-Kansas City, Kansas City, MO, 64110, USA.
Materials Physics and Applications Division, Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
Small. 2024 Oct;20(42):e2403013. doi: 10.1002/smll.202403013. Epub 2024 Jun 14.
Stabilizing liquid-liquid interfaces, whether between miscible or immiscible liquids, is crucial for a wide range of applications, including energy storage, microreactors, and biomimetic structures. In this study, a versatile approach for stabilizing the water-oil interface is presented using the morphological transitions that occur during the self-assembly of anionic, cationic, and nonionic surfactants mixed with fatty acid oils. The morphological transitions underlying this approach are characterized and extensively studied through small-angle X-ray scattering (SAXS), rheometry, and microscopy techniques. Dissipative particle dynamics (DPD) as a simulation tool is adopted to investigate these morphological transitions both in the equilibrium ternary system as well as in the dynamic condition of the water-oil interface. Such a versatile strategy holds promise for enhancing applications such as liquid-in-liquid 3D printing. Moreover, it has the potential to revolutionize a wide range of fields where stabilizing liquid-liquid interfaces not only offers unprecedented opportunities for fine-tuning nanostructural morphologies but also imparts interesting practical features to the resulting liquid shapes. These features include perfusion capabilities, self-healing, and porosity, which could have significant implications for various industries.
稳定液 - 液界面，无论其存在于互溶还是不互溶的液体之间，对于包括能量存储、微反应器和仿生结构在内的广泛应用都至关重要。在本研究中，我们提出了一种通用方法，利用阴离子、阳离子和非离子表面活性剂与脂肪酸油自组装过程中发生的形态转变来稳定水 - 油界面。通过小角X射线散射（SAXS）、流变学和显微镜技术对该方法背后的形态转变进行了表征和广泛研究。采用耗散粒子动力学（DPD）作为模拟工具，研究了平衡三元体系以及水 - 油界面动态条件下的这些形态转变。这种通用策略有望推动诸如液 - 液3D打印等应用的发展。此外，它有可能彻底改变众多领域，在这些领域中，稳定液 - 液界面不仅为微调纳米结构形态提供了前所未有的机会，还为所得液体形状赋予了有趣的实用特性。这些特性包括灌注能力、自愈性和孔隙率，这可能对各个行业产生重大影响。
