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

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...
The Colloidal State01:29

The Colloidal State

The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called the...
Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
Colloidal precipitates01:09

Colloidal precipitates

The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
Colloids03:22

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

An Adaptive Cholic Acid Dimer for Selective Encapsulation.

International journal of molecular sciences·2026
Same author

Preliminary Study of the Impact of Zwitterionic Ion-Exchange Resins on the Phenolic and Volatile Profiles of Fetească Neagră and Cabernet Sauvignon Wines.

Foods (Basel, Switzerland)·2026
Same author

Synergistic iron ion and sulfate removal via chitosan-engineered yeast biosorbents.

Bioresource technology·2026
Same author

Self-Assembled (Nano)Structures of Human Serum Albumin with Thermoresponsive Chitosan-<i>g</i>-PNIPAM Graft Copolymer.

Polymers·2026
Same author

Amylopectin Copolymers Grafted with RAFT-Obtained Synthetic Polymers: Synthesis and Aqueous Solution Behavior.

Biomacromolecules·2026
Same author

Adsorption of Zinc Ions from Aqueous Solutions on Polymeric Sorbents Based on Acrylonitrile-Divinylbenzene Networks Bearing Aminophosphonate Groups.

Molecules (Basel, Switzerland)·2025

Related Experiment Video

Updated: Jun 14, 2026

Preparation and Characterization of SDF-1&#945;-Chitosan-Dextran Sulfate Nanoparticles
12:00

Preparation and Characterization of SDF-1α-Chitosan-Dextran Sulfate Nanoparticles

Published on: January 22, 2015

Complex nanoparticles based on chitosan and ionic/nonionic strong polyanions: formation, stability, and application.

Ecaterina Stela Dragan1, Marcela Mihai, Simona Schwarz

  • 1"Petru Poni" Institute of Macromolecular Chemistry, Aleea Grigore Ghica Voda 41 A, RO-700487 Iasi, Romania. sdragan@icmpp.ro

ACS Applied Materials & Interfaces
|April 2, 2010
PubMed
Summary
This summary is machine-generated.

Interpolyelectrolyte complex nanoparticles formed with lower molar mass chitosan and specific copolymers exhibit enhanced colloidal stability and efficient kaolin destabilization. These findings offer insights into nanoparticle formation and application in suspensions.

More Related Videos

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles
09:57

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles

Published on: December 23, 2016

Assembly and Characterization of Polyelectrolyte Complex Micelles
08:44

Assembly and Characterization of Polyelectrolyte Complex Micelles

Published on: March 2, 2020

Related Experiment Videos

Last Updated: Jun 14, 2026

Preparation and Characterization of SDF-1&#945;-Chitosan-Dextran Sulfate Nanoparticles
12:00

Preparation and Characterization of SDF-1α-Chitosan-Dextran Sulfate Nanoparticles

Published on: January 22, 2015

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles
09:57

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles

Published on: December 23, 2016

Assembly and Characterization of Polyelectrolyte Complex Micelles
08:44

Assembly and Characterization of Polyelectrolyte Complex Micelles

Published on: March 2, 2020

Area of Science:

  • Polymer Science
  • Materials Science
  • Colloid Chemistry

Background:

  • Interpolyelectrolyte complexes (IPECs) are formed by the electrostatic interaction between oppositely charged polymers.
  • Chitosan, a biodegradable polysaccharide, is widely used in nanoparticle formulations.
  • Copolymers containing sulfonate and hydrophobic groups can influence IPEC properties.

Purpose of the Study:

  • To investigate the formation and properties of IPEC nanoparticles using chitosan of varying molar masses and novel copolymers.
  • To understand the effect of polyelectrolyte characteristics and charge ratios on nanoparticle morphology and colloidal stability.
  • To evaluate the efficiency of IPECs in destabilizing model suspensions.

Main Methods:

  • Preparation of IPEC nanoparticles via dropwise addition of polyanion to chitosan solution.
  • Characterization using turbidimetric titration, dynamic light scattering, and atomic force microscopy.
  • Assessment of kaolin destabilization efficiency at different IPEC concentrations.

Main Results:

  • IPEC nanoparticles formed with lower molar mass chitosan (470 kDa) showed the smallest sizes and narrow size distribution.
  • High colloidal stability was observed, especially when polyanion was in excess.
  • Nonstoichiometric IPECs (n(-)/n+ ≈ 0.2) demonstrated superior kaolin destabilization compared to chitosan alone, with lower optimal concentration and wider flocculation window.

Conclusions:

  • Chitosan molar mass significantly impacts IPEC nanoparticle size and stability.
  • The charge ratio and polymer structure (hydrophobicity, flexibility) govern IPEC formation and properties.
  • Nonstoichiometric IPECs show promise as efficient flocculants for suspensions.