One-Component Nanocomposites (OCNs) are an interesting new class of polymer materials that are obtained by covalently attaching the polymer to the reinforcing component. The resulting hairy nanoparticles (HNPs) can then be processed into OCN films, which show enhanced properties relative to their two-component derivatives. Little work has been carried out on OCNs comprised of anisotropic hairy nanorods (HNRs). In this work, HNRs obtained by grafting poly(2-vinylpyridine) to cellulose nanocrystals (CNC-P2VP) are prepared and the properties of their resulting OCN investigated. Synthesis of the CNC-P2VP HNRs was achieved by reacting allyl functionalized CNCs with thiol chain-end functionalized P2VP (prepared via RAFT polymerization) and the OCNs films studied. Structural characterization was performed using scanning electron microscopy. The P2VP polymer grafts were selectively converted to the ionically conducting poly(2-vinyl <i>N</i>-methylpyridinium iodide) by exposing the OCN films to methyl iodide. Conductivity measurements were performed using AC impedance spectroscopy within a humidity-controlled chamber. Interestingly, compared to control (ungrafted) P2VP film exposed to methyl iodide, an order of magnitude increase in conductivity was measured in the in-plane direction. Work toward understanding this interesting effect will be reported.<br/>

Enhanced ionic conductivity in poly(2-vinyl N-methylpyridinium iodide)-cellulose nanocrystal one-component nanocomposites

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.