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Related Experiment Video

Updated: Feb 6, 2026

Assembly and Characterization of Polyelectrolyte Complex Micelles
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Chitosan⁻Carboxymethylcellulose-Based Polyelectrolyte Complexation and Microcapsule Shell Formulation.

Jagadish Chandra Roy1,2,3,4, Ada Ferri5, Stéphane Giraud6,7

  • 1Departments of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy. jagadish.roy@polito.it.

International Journal of Molecular Sciences
|August 29, 2018
PubMed
Summary

Researchers developed chitosan-carboxymethyl cellulose microcapsules for paraffin oil. Optimal conditions and crosslinking with glutaraldehyde ensured effective encapsulation and shell integrity for thermal energy storage applications.

Keywords:
carboxymethyl cellulose sodium saltchitosanemulsionmicrocapsulepolyelectrolyte complex

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Microencapsulation is crucial for protecting phase change materials like paraffin oil.
  • Chitosan and carboxymethyl cellulose offer biocompatible and tunable properties for microcapsule shells.

Purpose of the Study:

  • To synthesize and characterize chitosan-carboxymethyl cellulose (CH/NaCMC) microcapsules containing paraffin oil.
  • To optimize synthesis conditions and investigate the effect of glutaraldehyde crosslinking on microcapsule properties.

Main Methods:

  • Complex coacervation and electrostatic deposition for microcapsule formation.
  • Zeta potential and optical microscopy for surface charge and morphology analysis.
  • ATR-FTIR, SEM, and DSC for chemical structure, morphology, and thermal properties evaluation.

Main Results:

  • Optimal CH/NaCMC microcapsules formed at pH 5.5 and a 1:1 mass ratio.
  • Glutaraldehyde crosslinking enhanced shell integrity and maintained paraffin oil's latent heat.
  • High encapsulation efficiency and core content were achieved, indicating successful paraffin oil entrapment.

Conclusions:

  • CH/NaCMC microcapsules are effective for encapsulating paraffin oil.
  • Glutaraldehyde crosslinking improves microcapsule stability and performance for thermal energy storage.
  • The developed microcapsules show promise for applications requiring controlled release and thermal management.