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Related Concept Videos

Surface Active Agents01:27

Surface Active Agents

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...
Micelles01:30

Micelles

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...
Membrane Fluidity01:23

Membrane Fluidity

Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.Fatty acids tails of phospholipids can be either saturated or...

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Related Experiment Video

Updated: Jun 2, 2026

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device
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Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Published on: March 18, 2020

Thermo-switchable surfactant gel.

Zonglin Chu1, Yujun Feng

  • 1Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, PR China.

Chemical Communications (Cambridge, England)
|May 6, 2011
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel thermo-switchable surfactant gel that solidifies upon heating. This thermal gelation occurs due to the growth of surfactant micelles into entangled worm-like structures.

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Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Physical Chemistry

Background:

  • Surfactant-based gels are crucial in various applications, including drug delivery and personal care.
  • Developing stimuli-responsive gels, particularly those triggered by temperature, remains an active area of research.
  • Understanding the self-assembly mechanisms of surfactants is key to designing novel functional materials.

Purpose of the Study:

  • To synthesize and characterize a novel thermo-switchable surfactant gel.
  • To investigate the mechanism behind thermally induced gelation.
  • To explore the potential applications of this new class of thermogelling surfactants.

Main Methods:

  • Synthesis of palmitylamidosulfobetaine surfactant.
  • Rheological measurements to confirm gelation upon heating.
  • Dynamic light scattering and transmission electron microscopy to study micellar structure evolution.

Main Results:

  • A novel thermo-switchable surfactant gel was successfully developed based on palmitylamidosulfobetaine.
  • The gelation process was confirmed to be reversible and triggered by increasing temperature.
  • Microscopic analysis revealed that globular micelles grow into entangled worm-like micelles, leading to gelation.

Conclusions:

  • Palmitylamidosulfobetaine exhibits unique thermogelling properties, forming a gel upon heating.
  • The observed gelation mechanism involves a transition from globular to worm-like micelles.
  • This discovery opens avenues for developing new temperature-responsive materials for diverse applications.