Colloid and Polymer Science

, Volume 283, Issue 12, pp 1267–1277

Elaboration of fluorescent and highly magnetic submicronic polymer particles via a stepwise heterocoagulation process

Original contribution

DOI: 10.1007/s00396-005-1334-1

Cite this article as:
Lansalot, M., Sabor, M., Elaissari, A. et al. Colloid Polym Sci (2005) 283: 1267. doi:10.1007/s00396-005-1334-1


Using the stepwise heterocoagulation concept, fluorescent and highly magnetic submicronic core-shell polymer particles were prepared. For this purpose a negatively charged oil-in-water magnetic emulsion was first modified by adsorbing the poly(ethyleneimine) (PEI). Secondly, low glass transition temperature (Tg=10°C) anionic film-forming nanoparticles were adsorbed onto the cationic magnetic droplets. Finally the encapsulation was induced by heating the heterocoagulates above the Tg of the film-forming nanoparticles. To produce labeled magnetic particles, fluorescent nanoparticles and film-forming nanoparticles were simultaneously adsorbed. PEI adsorption was investigated. Also investigated was the influence of the amount of film-forming nanoparticles and fluorescent nanoparticles on the encapsulation efficiency.


Heterocoagulation Submicronic particles Magnetic emulsion Fluorescent 

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • M. Lansalot
    • 1
  • M. Sabor
    • 1
  • A. Elaissari
    • 1
  • C. Pichot
    • 1
  1. 1.Systémes Macromoléculaires et Physiopathologie HumaineUMR 2714 - 46Lyon Cedex 07France