...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Materials >Colloid Surfactants for Emulsion Stabilization
【24h】

Colloid Surfactants for Emulsion Stabilization

机译：稳定乳液的胶体表面活性剂

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In the classic solid particle-stabilized emulsions, typically referred to as Pickering emulsions, particles accumulate at the interface between two immiscible liquids and stabilize the emulsion drops against coalescence by forming a mechanically robust monolayer at the liquid-liquid interface. Particles adsorb to the interfaces to form a dense monolayer only under limited conditions that depend on particle size and shape, wettability, and interparticle interactions. Adsorption is typically obtained when the particles are wetted by both liquids; another strategy to bring particles to the interface is to introduce a chemical anisotropy to the stabilizing particles, making the particles themselves amphiphilic. Such particles are often referred to as "Janus" particles. These particles adsorb to interfaces more easily than isotropic particles due to their amphi-philicity and more strongly than molecular surfactants due to their larger size. Therefore, truly amphiphilic "Janus" particles combine the advantages of particle stabilization of emulsions and the amphiphilicity of molecular surfactants to afford better emulsion stabilization.
机译：在经典的固体颗粒稳定的乳剂（通常称为Pickering乳剂）中，颗粒在两种不混溶的液体之间的界面处积聚，并通过在液-液界面形成机械坚固的单分子层来稳定乳剂液滴，防止聚结。颗粒仅在取决于颗粒大小和形状，润湿性和颗粒间相互作用的有限条件下吸附到界面上，形成致密的单层。当两种液体都润湿了颗粒时，通常会获得吸附。将颗粒带入界面的另一种策略是将化学各向异性引入稳定颗粒，使颗粒本身具有两亲性。这样的颗粒通常被称为“ Janus”颗粒。这些颗粒由于具有两亲性，因此比各向同性颗粒更容易吸附到界面上；由于尺寸较大，它们比分子表面活性剂更牢固地吸附到界面上。因此，真正的两亲性“ Janus”颗粒结合了乳液的颗粒稳定性和分子表面活性剂的两亲性优势，从而提供了更好的乳液稳定性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号