Yao Xiaoxue, Liu Zhou, Ma Mingze, Chao Youchuang, Gao Yongxiang, Kong Tiantian
Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen, 518000, China.
College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518000, China.
Small. 2018 Sep;14(37):e1802902. doi: 10.1002/smll.201802902. Epub 2018 Aug 20.
Studying the stability of Pickering emulsion is of great interest for applications including catalysis, oil recovery, and cosmetics. Conventional methods emphasize the overall behavior of bulk emulsions and neglect the influence of particle adsorbing dynamics, leading to discrepancies in predicting the shelf-life of Pickering emulsion-based products. By employing a microfluidic method, the particle adsorption is controlled and the stability of the Pickering emulsions is consequently examined. This approach enables us to elucidate the relationship between the particle adsorption dynamics and the stability of Pickering emulsions on droplet-level quantitatively. Using oil/water emulsions stabilized by polystyrene nanoparticles as an example, the diffusion-limited particle adsorption is demonstrated and investigated the stability criteria with respect to particle size, particle concentration, surface chemistry, and ionic strength. This approach offers important insights for application involving Pickering emulsions and provides guidelines to formulate and quantify the Pickering emulsion-based products.
研究皮克林乳液的稳定性对于包括催化、石油开采和化妆品在内的应用具有重要意义。传统方法侧重于宏观乳液的整体行为，而忽略了颗粒吸附动力学的影响，导致在预测基于皮克林乳液的产品保质期时出现差异。通过采用微流控方法，可以控制颗粒吸附，从而研究皮克林乳液的稳定性。这种方法使我们能够在液滴水平上定量阐明颗粒吸附动力学与皮克林乳液稳定性之间的关系。以聚苯乙烯纳米颗粒稳定的油/水乳液为例，证明了扩散限制的颗粒吸附，并研究了关于颗粒大小、颗粒浓度、表面化学和离子强度的稳定性标准。这种方法为涉及皮克林乳液的应用提供了重要见解，并为配制和量化基于皮克林乳液的产品提供了指导。
