Swelling properties of hybrid (cellulose nanocrystals/Gibbsite platelets) multilayered films
In the framework of the PhD thesis of Clélia Martin (ILL-CERMAV), we are investigating innovative hybrid organic/inorganic multilayered films comprising alternated layers of cellulose nanocrystals (CNCs) and Gibbsite platelets (GW). CNCs are rod like biosourced nanoparticles exhibiting outstanding physical properties that appear as perfect building blocks for the preparation of green or hybrid nanocomposites. The association of CNCs with Gibbsite (AlOH3) hexagonal nanoplatelets in thin films built using the Layer-by-Layer assembly technique constitutes a real challenge for the building free-standing films and coatings with enhanced mechanical and barrier properties. The architecture of (CNC/GW) multilayered films was shown to be highly tunable by varying the drying protocol and the salt content. We propose here to investigate by neutron refelctivity the swelling properties of (GW/CNC) multilayers. It indeed appears crucial to check if phenomena like swelling, thickness increase, rearrangement of the nanoparticles, or desorption occur. This study will benefit from the intracrystalline deuteration and from the high momentum tranfer range provided by the high flux ILL reactor.
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JEAN Bruno; BARKER Robert; HEUX Laurent and MARTIN Clelia. (2014). Swelling properties of hybrid (cellulose nanocrystals/Gibbsite platelets) multilayered films. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-12-350
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