Pickering water-in-water emulsions: A review on their rheological and tribological performance

IF 7 2区化学 Q1 CHEMISTRY, PHYSICAL

Current Opinion in Colloid & Interface Science Pub Date : 2025-07-11 DOI:10.1016/j.cocis.2025.101940

Chenxi Wang , Brent S. Murray , Michael Bryant , Anwesha Sarkar

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Abstract

Pickering water-in-water (W/W) emulsions have attracted renewed research attention owing to the recent discovery of their aqueous lubrication performance. We cover the current knowledge of Pickering W/W emulsions regarding their rheological and tribological performance. Particularly, we examine the recent advances that have surfaced in the literature in the last five years, highlighting how the two phases and the Pickering particles affect the rheological properties and microstructural evolution of W/W emulsions when subjected to various degrees of shear stresses. We postulate how biolubrication performance of Pickering W/W emulsions can be altered by formulation engineering of the water droplets to offer fluid film lubrication while the particles providing boundary lubrication. This review therefore offers a stepping stone in highlighting the requirement of systematic experimental studies and rational design of the next-generation Pickering W/W emulsions for them to act as effective aqueous lubricants for a range of biomedical and allied applications.

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皮克林水包水乳液：流变学和摩擦学性能的研究进展

皮克林水包水（W/W）乳液由于其含水润滑性能的最新发现而引起了新的研究关注。我们介绍了目前关于皮克林W/W乳液流变学和摩擦学性能的知识。特别是，我们研究了近五年来在文献中出现的最新进展，强调了在不同程度的剪切应力下，两相和皮克林颗粒如何影响水乳状液的流变特性和微观结构演变。我们假设如何通过配方工程来改变皮克林W/W乳剂的生物润滑性能，水滴提供流体膜润滑，颗粒提供边界润滑。因此，本综述为强调下一代皮克林W/W乳剂作为生物医学和相关应用的有效水性润滑剂的系统实验研究和合理设计提供了一个基石。

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来源期刊

Current Opinion in Colloid & Interface Science 化学-物理化学

CiteScore

16.50

自引率

1.10%

发文量

审稿时长

11.3 weeks

期刊介绍： Current Opinion in Colloid and Interface Science (COCIS) is an international journal that focuses on the molecular and nanoscopic aspects of colloidal systems and interfaces in various scientific and technological fields. These include materials science, biologically-relevant systems, energy and environmental technologies, and industrial applications. Unlike primary journals, COCIS primarily serves as a guide for researchers, helping them navigate through the vast landscape of recently published literature. It critically analyzes the state of the art, identifies bottlenecks and unsolved issues, and proposes future developments. Moreover, COCIS emphasizes certain areas and papers that are considered particularly interesting and significant by the Editors and Section Editors. Its goal is to provide valuable insights and updates to the research community in these specialized areas.