Synthesis and self-assembly of Chitosan-g-Polystyrene copolymer: A new route for the preparation of heavy metal nanoparticles

Raju S. Francis, Deepa K. Baby, Yves Gnanou

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Amphiphilic graft copolymers made of a Chitosan (CS) backbone and three arm polystyrene (PS) grafts were prepared by "grafting onto" strategy using Toluene Diisocyanate. IR spectroscopy and SEC show the successful grafting process. SEM pictures of Chitosan-g-Polystyrene (CS-g-PS) indicate a spherulite like surface and exhibit properties that result from the disappearance of Chitosan crystallinity. The introduced polystyrene star grafts units improve hydrophobic properties considerably as confirmed by the very high solubility of (CS-g-PS) in organic solvents. The graft copolymer which self-assembles into polymeric micelles in organic media demonstrates much better adsorption of transition and inner transition metal ions than pure Chitosan whose amine groups are not necessarily available due to crystallinity.
Original languageEnglish (US)
Pages (from-to)110-115
Number of pages6
JournalJournal of Colloid and Interface Science
StatePublished - Jan 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: RF gratefully thank Prof. R.S.Duran, LSU, USA for the useful discussions in making the precursor star polymer. DKB thank Council of Scientific and Industrial Research (CSIR), Govt of India for research fellowship. RF and DKB also thank University Grants Commission (UGC) - India, Science and Engineering Research Board-Department of Science & Technology (SERB-DST) - India, Fund for Improvement of Science & Technology (FIST) - India and Kerala State Government for financial support.

ASJC Scopus subject areas

  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry
  • Electronic, Optical and Magnetic Materials


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