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

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    Type
    Article
    Authors
    Francis, Raju S.
    Baby, Deepa K.
    Gnanou, Yves cc
    KAUST Department
    Chemical Science Program
    Physical Science and Engineering (PSE) Division
    Date
    2015-01
    Permanent link to this record
    http://hdl.handle.net/10754/563976
    
    Metadata
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    Abstract
    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.
    Citation
    Francis, R., Baby, D. K., & Gnanou, Y. (2015). Synthesis and self-assembly of Chitosan- g -Polystyrene copolymer: A new route for the preparation of heavy metal nanoparticles. Journal of Colloid and Interface Science, 438, 110–115. doi:10.1016/j.jcis.2014.09.034
    Sponsors
    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.
    Publisher
    Elsevier BV
    Journal
    Journal of Colloid and Interface Science
    DOI
    10.1016/j.jcis.2014.09.034
    PubMed ID
    25454432
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.jcis.2014.09.034
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program

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