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Heterogeneous modification of chitosan via nitroxide-mediated polymerization

Abstract : Chitosan (CS) was modified by SG1-based nitroxide-mediated polymerization under heterogeneous conditions. After introduction of acrylamide and/or acrylate functions onto the CS backbone followed by intermolecular 1,2 radical addition of the BlocBuilder alkoxyamine (CS–BB), methyl methacrylate (MMA) in the presence of a small amount of acrylonitrile (AN) or sodium 4-styrenesulfonate (SS) was polymerized by nitroxide-mediated polymerization (NMP). ESR and free-solution capillary electrophoresis confirmed the synthesis of CS–BB. The successful synthesis of CS-g-P(MMA-co-AN) and CS-g-PSS grafted copolymers was proved by TGA and solid-state NMR spectroscopy with ca. 20 to 30 wt% of grafted synthetic polymer in the final product.
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https://hal-amu.archives-ouvertes.fr/hal-01460464
Contributor : Didier Gigmes <>
Submitted on : Tuesday, February 7, 2017 - 4:43:22 PM
Last modification on : Thursday, July 9, 2020 - 1:12:02 PM

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Catherine Lefay, Yohann Guillaneuf, Guillaume Moreira, Joel J. Thevarajah, Patrice Castignolles, et al.. Heterogeneous modification of chitosan via nitroxide-mediated polymerization. Polymer Chemistry, Royal Society of Chemistry - RSC, 2013, 4 (2), pp.322--328. ⟨10.1039/C2PY20544K⟩. ⟨hal-01460464⟩

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