Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Colloids

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...

You might also read

Related Articles

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

Sort by

Same author

Conformational and rheological behavior of kappa carrageenan in glycerol: Effects of sodium salts and preparation temperature.

Carbohydrate polymers·2025

Same author

Colloid, interface, and foam properties of water-soluble polyglycerol esters solutions.

Journal of colloid and interface science·2024

Same author

Analytical modeling of micelle growth. 5. Molecular thermodynamics of micelles from zwitterionic surfactants.

Journal of colloid and interface science·2022

Same author

Viscosity Peak due to Shape Transition from Wormlike to Disklike Micelles: Effect of Dodecanoic Acid.

Langmuir : the ACS journal of surfaces and colloids·2018

Same author

Detachment of Rough Colloids from Liquid-Liquid Interfaces.

Langmuir : the ACS journal of surfaces and colloids·2018

Same author

Hardening of particle/oil/water suspensions due to capillary bridges: Experimental yield stress and theoretical interpretation.

Advances in colloid and interface science·2017

Search research articles

Related Experiment Video

Updated: Sep 17, 2025

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Published on: December 24, 2014

Optimizing Lubricant Deposition on Hair-like Substrates Using Cationic Polymer/Anionic Surfactant Complexes.

Nikol K Dimitrova¹, Mihail T Georgiev^1,2, Svetoslav E Anachkov¹

¹Department of Chemical and Pharmaceutical Engineering, Faculty of Chemistry and Pharmacy, Sofia University St. Kliment Ohridski, 1 James Bourchier Blvd., Sofia 1164, Bulgaria.

Langmuir : the ACS Journal of Surfaces and Colloids

|June 30, 2025

Summary

Cationic polymers and anionic surfactants in shampoos form complexes that deposit oils on hair. Cat-Guar/SLES-1EO complexes show superior deposition compared to cat-HEC/SLES-1EO, optimizing shampoo performance.

More Related Videos

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

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

Published on: March 18, 2020

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

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

Published on: January 25, 2018

Related Experiment Videos

Last Updated: Sep 17, 2025

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes

Published on: December 24, 2014

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

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

Published on: March 18, 2020

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

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

Published on: January 25, 2018

Area of Science:

Colloid and Surface Science
Materials Science
Formulation Science

Background:

Oppositely charged polymer-surfactant mixtures have unique properties and applications.
Cationic polymers with anionic surfactants are used for oil deposition on hair and skin.
Complex formulations of these mixtures are less understood than simple systems.

Purpose of the Study:

To investigate polymer-surfactant complexes (PSCs) of cationic polysaccharides (cat-Guars, cat-HECs) and sodium laureth-1 sulfate (SLES-1EO) in shampoo.
To analyze PSCs' phase behavior, interfacial adsorption, bubble stickiness, and hair deposition.
To elucidate the deposition mechanism for optimizing polymer performance in formulations.

Main Methods:

Phase behavior analysis
Zeta potential measurements
Foam film experiments
Imaging ellipsometry

Main Results:

Cat-Guar/SLES-1EO complexes showed wider precipitation regions and higher silicone oil/water interface adsorption than cat-HEC/SLES-1EO.
Only cat-Guar/SLES-1EO complexes formed sticky PSCs that bridged air bubbles and silicone drops to hair.
Cat-Guars deposited thick, inhomogeneous layers of PSCs and silicone on hair-like substrates; cat-HECs deposited little to nothing.

Conclusions:

Cat-Guar/SLES-1EO complexes are more effective in deposition applications within shampoo formulations.
The study elucidates the deposition mechanism, offering strategies for optimizing polymer performance.
Comprehensive experimental protocols can guide the development of advanced personal care products.