Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

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
Cationic Chain-Growth Polymerization: Mechanism00:57

Cationic Chain-Growth Polymerization: Mechanism

3.1K
The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the...
3.1K
Solubility03:00

Solubility

23.0K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
23.0K
Anionic Chain-Growth Polymerization: Mechanism01:04

Anionic Chain-Growth Polymerization: Mechanism

2.6K
The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic anion, such as butyl lithium, initiates the polymerization process by attacking the π bond of the vinylic monomer. As a result, a carbanion, stabilized by the electron‐withdrawing group, is generated. The resulting carbanion acts as a Michael donor in the propagation step and attacks the second vinylic monomer, which acts as a Michael...
2.6K
Electrophilic Aromatic Substitution: Sulfonation of Benzene01:22

Electrophilic Aromatic Substitution: Sulfonation of Benzene

9.4K
Sulfonation of benzene is a reaction wherein benzene is treated with fuming sulfuric acid at room temperature to produce benzenesulfonic acid. Fuming sulfuric acid is a mixture of sulfur trioxide and concentrated sulfuric acid.
9.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Luminescent Fe<sub>3</sub>O<sub>4</sub> Nanohybrid for Intra-Cellular Imaging and Combinatorial Chemo-Photothermal Therapy in Cancer.

Chembiochem : a European journal of chemical biology·2026
Same author

Additive-Driven Micellar Growth and Morphological Transitions in Tetronic Block Copolymers: Insights from Experimental and Computational Study.

The journal of physical chemistry. B·2026
Same author

Surface Chemistry and Particle Morphology Govern the Multiscale Interactions and Properties of Silica-Polyelectrolyte-Stabilized Microcapsules.

Langmuir : the ACS journal of surfaces and colloids·2026
Same author

Cationic liposome-based silencing of thioredoxin reductase-1 for sensitization of MDA-MB 231 cells to gamma radiation.

Biochimica et biophysica acta. Molecular cell research·2025
Same author

A study of in-the-column detector micrograph contrast in low-voltage scanning electron microscopy.

Micron (Oxford, England : 1993)·2025
Same author

Non-destructive colorimetric detection of milk freshness by starch-alginate sensor beads stabilized by nanoemulsions.

Analytical methods : advancing methods and applications·2025

Related Experiment Video

Updated: Apr 18, 2026

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.7K

pH-switchable structural evolution in aqueous surfactant-aromatic dibasic acid system.

Linet Rose J1, B V R Tata, V K Aswal

  • 1Department of Chemistry, NIT Calicut, 673601, Kerala, India.

The European Physical Journal. E, Soft Matter
|January 29, 2015
PubMed
Summary
This summary is machine-generated.

This study reveals how pH changes can reversibly transform an aqueous solution between liquid and gel states. Adjusting pH alters micelle structure, impacting the solution's flow properties and viscosity.

More Related Videos

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device
06:31

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

Published on: March 18, 2020

6.9K
Enhanced Oil Recovery using a Combination of Biosurfactants
13:19

Enhanced Oil Recovery using a Combination of Biosurfactants

Published on: June 3, 2022

6.2K

Related Experiment Videos

Last Updated: Apr 18, 2026

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.7K
Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device
06:31

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

Published on: March 18, 2020

6.9K
Enhanced Oil Recovery using a Combination of Biosurfactants
13:19

Enhanced Oil Recovery using a Combination of Biosurfactants

Published on: June 3, 2022

6.2K

Area of Science:

  • Colloid and Surface Science
  • Materials Science
  • Physical Chemistry

Background:

  • Aqueous micellar systems are crucial in various applications.
  • Understanding pH-induced structural transitions is key to controlling material properties.

Purpose of the Study:

  • To investigate pH-triggered structural transitions in a cetylpyridinium chloride and phthalic acid system.
  • To correlate these transitions with changes in rheological and microstructural properties.

Main Methods:

  • Rheology was used to measure flow properties.
  • Light scattering techniques probed microstructural changes.
  • Cryogenic Transmission Electron Microscopy (cryo-TEM) visualized micelle morphology.

Main Results:

  • The system exhibited reversible liquid-to-gel switching upon pH adjustment.
  • High viscosity and shear-thinning behavior indicated the formation of long, entangled micelles.
  • Cryo-TEM confirmed the transition from short to long, thread-like micelles.

Conclusions:

  • pH-dependent phthalic acid binding to micelles drives morphological transformations.
  • These transformations are responsible for the observed changes in flow properties.
  • The study highlights a method for controlling micellar system behavior via pH modulation.