多孔性
流变学
肺表面活性物质
化学工程
材料科学
空化
纳米技术
复合材料
机械
物理
工程类
作者
Chen Tan,Michelle C. Lee,Seyedramin Pajoumshariati,Alireza Abbaspourrad
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2018-09-16
卷期号:6 (11): 14374-14382
被引量:41
标识
DOI:10.1021/acssuschemeng.8b03077
摘要
In this work, we demonstrate sonochemically synthesized high internal phase emulsions (HIPEs), which feature high stability due to a permanent layer at the oil–water interface that nearly any material can form as long as it can be cross-linked during acoustic cavitation. Compared to conventional HIPEs prepared by homogenization emulsification, these ultrasonically prepared HIPEs exhibit excellent performance, including high tolerance to environmental shock (e.g., pH and surfactant) and excellent processability, as well as the capacity to structure liquid oil and provide controlled delivery for bioactive compounds. By changing the acoustic intensity, we can also easily tune the morphology, rheological properties, porosity, and closed-/open-cell structure of the porous materials. Furthermore, this unique type of HIPE is potentially sustainable because it can be stabilized solely by natural materials, such as proteins and polysaccharides, even at 0.5 wt %, without introducing any additional surfactants or synthetic particles. These findings suggest this sonochemical technique holds promise as a versatile, scalable, and environmentally friendly route for synthesizing ultrastable and fully natural HIPEs. Additionally, the material performance shown herein provides a proof-of-concept for the design of multifunctional HIPEs in various applications.
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