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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...
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Preparation of Hollow Polystyrene Particles and Microcapsules by Radical Polymerization of Janus Droplets Consisting of Hydrocarbon and Fluorocarbon Oils
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Preparation of Hollow Polystyrene Particles and Microcapsules by Radical Polymerization of Janus Droplets Consisting of Hydrocarbon and Fluorocarbon Oils

Published on: January 25, 2018

Foams stabilized by multilamellar polyglycerol ester self-assemblies.

Corina Curschellas1, Joachim Kohlbrecher, Thomas Geue

  • 1Laboratory of Food Process Engineering, ETH Zürich, Schmelzbergstrasse 9, 8092 Zürich, Switzerland. corina.curschellas@alumni.ethz.ch

Langmuir : the ACS Journal of Surfaces and Colloids
|December 11, 2012
PubMed
Summary
This summary is machine-generated.

Polyglycerol ester (PGE) nonionic surfactant self-assemblies form vesicles and lamellar structures in solution. These structures stabilize foams by creating strong interfacial films and agglomerates in interstitial areas.

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Self-Assembly of Hybrid Lipid Membranes Doped with Hydrophobic Organic Molecules at the Water/Air Interface

Published on: May 1, 2020

Area of Science:

  • Colloid and Surface Science
  • Materials Science
  • Physical Chemistry

Background:

  • Surfactant self-assemblies are crucial for stabilizing foams.
  • Polyglycerol esters (PGE) are nonionic surfactants with potential applications in foam stabilization.

Purpose of the Study:

  • To investigate the self-assembly behavior of PGE in bulk solutions, at interfaces, and within foams.
  • To understand the role of PGE self-assemblies in foam stabilization.

Main Methods:

  • Small-angle neutron scattering (SANS)
  • Neutron reflectivity (NR)
  • Electron microscopy (EM)

Main Results:

  • PGE solutions exhibit vesicles and open lamellar structures.
  • Heating increases lamellar spacing, affected by NaCl and CaCl(2).
  • PGE forms multilayered films at the air-water interface, with increased ordering upon compression.
  • Foam stabilization involves both interfacial films and interstitial agglomerates.

Conclusions:

  • PGE self-assemblies are complex, forming various structures in bulk and at interfaces.
  • These structures contribute significantly to foam stabilization through interfacial films and interstitial agglomerates.