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相关概念视频

Surface Active Agents01:27

Surface Active Agents

133
Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...
133
Micelles01:30

Micelles

282
Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
282

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通过可调节的界面张力动态重新配置复杂乳液.

Lauren D Zarzar1, Vishnu Sresht2, Ellen M Sletten1

  • 1Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

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|February 27, 2015
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概括
此摘要是机器生成的。

研究人员开发了一种单步方法,用于创建具有可调整形状的复杂乳液. 该技术允许可控地重新配置液滴形态,为各种应用提供新的响应性材料.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 化学工程是化学工程的重要组成部分.
  • 合体和表面化学

背景情况:

  • 乳化对于药物,食品和材料至关重要,复杂的乳液,如Janus滴滴越来越重要.
  • 目前的制造方法缺乏对乳化后形态变化的控制,限制了材料的可调性.
  • 为可控制和可重新配置的复杂乳液开发精确的制造技术至关重要.

研究的目的:

  • 引入一种新的三相和四相复杂乳液的一步制造方法.
  • 为了实现高度可控和可重新配置的滴水形态.
  • 通过响应式乳液设计,实现动态调节材料的创建.

主要方法:

  • 利用碳化合物,和碳液体对温度敏感的可混合性.
  • 将该方法应用于复杂滴滴的微流体和可扩展批量生产.
  • 使用碳化合物和化表面活性剂操纵界面张力来改变滴滴几何.

主要成果:

  • 成功制造出具有可控制形态的三,四相复杂乳液.
  • 在封装和Janus滴滴配置之间展示了交替.
  • 展示了通过不同的界面张力和表面活性剂类型重新配置滴滴几何学的能力.

结论:

  • 开发的方法为制造具有可重新配置形态的多相乳液提供了一个可通用的策略.
  • 这种方法有助于创建具有可调节性质的多种响应性材料.
  • 该技术为先进的应用提供精确控制液滴的物理和化学特性.