New article by Cyprien Mauroy, Clément Levard, Céline Moreau, Vladimir Vidal, Jérôme Rose & Bernard Cathala on "Elaboration of Cellulose Nanocrystal/Ge-Imogolite Nanotube Multilayered Thin Films"
Abstract :
Multilayered thin films combining two oppo-sitely charged nanoparticles (NPs), i.e., cellulose nanocrystals
(CNCs) and Ge-imogolites, have been successfully obtained by the layer-by-layer method. CNC/Ge-imogolite (NP/NP)
film growth patterns were studied by comparing growth mode of all of the nanoparticles thin films to that of films composed
of CNC or Ge-imogolites combined with polyelectrolytes (PEs), i.e., cationic poly(allylamine hydrochloride) and anionic
poly-4-styrene sulfonate (NP/PE films). NP/NP and NP/PE films growth patterns were found to be different. To get a
deeper understanding of the growth mode of NP/NP, impact of different parameters, such as imogolites aspect ratio, adsorption time,
ionic strength, and repeated immersion/drying, was evaluated and influence of the drying step is emphasized.
The aspect ratio of imogolites was identified as an important feature for the film’s architecture.
The short Ge-imogolites form denser films because the surface packing was more efficient.
http://dx.doi.org/10.1021/acs.langmuir.8b00091
