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Gas marbles: ultra-long-lasting and ultra-robust bubbles formed by particle stabilization
Frontiers of Chemical Science and Engineering ( IF 4.3 ) Pub Date : 2022-08-04 , DOI: 10.1007/s11705-022-2180-0
Xuxin Zhao , Kunling Yang , Zhou Liu , Ho Cheung Shum , Tiantian Kong

Bubbles and foams are ubiquitous in daily life and industrial processes. Studying their dynamic behaviors is of key importance for foam manufacturing processes in food packaging, cosmetics and pharmaceuticals. Bare bubbles are inherently fragile and transient; enhancing their robustness and shelf lives is an ongoing challenge. Their rupture can be attributed to liquid evaporation, thin film drainage and the nuclei of environmental dust. Inspired by particle-stabilized interfaces in Pickering emulsions, armored bubbles and liquid marble, bubbles are protected by an enclosed particle-entrapping liquid thin film, and the resultant soft object is termed gas marble. The gas marble exhibits mechanical strength orders of magnitude higher than that of soap bubbles when subjected to overpressure and underpressure, owing to the compact particle monolayer straddling the surface liquid film. By using a water-absorbent glycerol solution, the resulting gas marble can persist for 465 d in normal atmospheric settings. This particle-stabilizing approach not only has practical implications for foam manufacturing processes but also can inspire the new design and fabrication of functional biomaterials and biomedicines.



中文翻译:

气体弹珠:通过颗粒稳定形成的超持久和超坚固的气泡

气泡和泡沫在日常生活和工业过程中无处不在。研究它们的动态行为对于食品包装、化妆品和药品中的泡沫制造过程至关重要。裸露的泡沫本质上是脆弱和短暂的;提高它们的坚固性和保质期是一项持续的挑战。它们的破裂可归因于液体蒸发、薄膜排水和环境尘埃的核。受皮克林乳液、装甲气泡和液体大理石中的粒子稳定界面的启发,气泡受到封闭的粒子捕获液体薄膜的保护,由此产生的柔软物体被称为气体大理石。气体大理石在承受超压和欠压时表现出比肥皂泡高几个数量级的机械强度,由于跨越表面液膜的致密颗粒单层。通过使用吸水甘油溶液,产生的气体大理石可以在正常大气环境下持续 465 天。这种粒子稳定方法不仅对泡沫制造工艺具有实际意义,而且可以激发功能性生物材料和生物药物的新设计和制造。

更新日期:2022-08-04
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