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相关概念视频

Colloidal precipitates01:09

Colloidal precipitates

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The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
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相关实验视频

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Directed Assembly of Elastin-like Proteins into defined Supramolecular Structures and Cargo Encapsulation In Vitro
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在固体模板上通过界面沉形成的可食结构剂:交叉链接的粉合体.

Peilong Li1, Jieying Li1, Jacob Levin1

  • 1Department of Food Science, Cornell University, Ithaca, NY 14853, USA.

Carbohydrate polymers
|September 3, 2024
PubMed
概括

研究人员使用皮克林乳液创建了强大的空心粉颗粒. 这些交联的体体提供了增强的稳定性和粘度,在悬浮液中起到超级加厚剂的作用.

关键词:
结合体体是什么?结合体体是什么?交叉连接 交叉连接 交叉连接颗粒状悬浮液 颗粒状悬浮液是一种颗粒状悬浮液.皮克林乳液是一种皮克林乳液.类风病学 类风病学 类风病学粉是一种粉.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 合体和表面化学
  • 类风病学 类风病学 类风病学

背景情况:

  • 空心粉颗粒具有独特的风质性质,但受到外破裂的限制.
  • 开发稳定,功能性空心颗粒对于先进的材料应用至关重要.

研究的目的:

  • 为了设计强大的,透水的空心粉颗粒,增强稳定性和可调节的功能.
  • 研究微型架构在决定基于粉的合体体物质特性中的作用.

主要方法:

  • 使用青粉 (1微米) 通过皮克林乳液模板构建交叉连接的超结构.
  • 采用热处理 (75°C) 和乙醇沉进行合,然后进行三甲酸交联.
  • 使用不同的油 (卡诺拉油,棕油) 和pH条件,研究了的完整性和颗粒稳定性.

主要成果:

  • 与原生颗粒相比,开发了交联粉体 (89微米),具有更好的粘度和稳定性.
  • 确定了在50°C的棕油乳化是形成刚性核心的关键,防止在高pH下破裂.
  • 对于空洞结构来说,已经证明了超过10w/w%的阻塞过渡,这表明了超厚能力.
  • 展示了颗粒大小可扩展性 (>100微米),增加了模板体积,并通过温和的收获保护了的完整性.

结论:

  • 微架构对于控制空心粉颗粒的功能和稳定性至关重要.
  • 交叉连接的粉合体为需要高粘度和稳定性的应用提供了一个有前途的平台.
  • 开发的方法为从粉基构建块中设计先进的功能材料提供了一条途径.