Non-electrostatic building of biomimetic cellulose-xyloglucan multilayers.
Layer-by-layer assembly was used to build thin films, consisting of multiple layers alternating cellulose nanocrystals and xyloglucan, benefiting from the strong non-electrostatic cellulose-xyloglucan interaction. Data from atomic force microscopy and neutron reflectivity showed that these well-defined films exhibited a thickness increasing linearly with the number of layers, without increase in surface roughness. These "green" nanocomposite films, reminiscent of plant cell wall, are composed of a regular stack of single layers of cellulose nanocrystals separated by very thin xyloglucan spacers. Such architecture differs from the one formed by cellulose/polycations multilayers, where the cellulose phase itself consists of a double layer.
Jean
Bruno
B
Centre de Recherche sur les Macromolecules Végétales (CERMAV-CNRS), BP 53, 38041 Grenoble Cedex 9, France. bruno.jean@cermav.cnrs.fr
Heux
Laurent
L
Dubreuil
Frédéric
F
Chambat
Gérard
G
Cousin
Fabrice
F
D040761:Biomimetic Materials / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry*; D005936:Glucans / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D053761:Nanocomposites / Q000737:chemistry; D011134:Polysaccharides / Q000737:chemistry; D055672:Static Electricity; D014990:Xylans / Q000737:chemistry*
D005936:Glucans; D011134:Polysaccharides; D014990:Xylans; C029353:xyloglucan; C007916:hemicellulose; D002482:Cellulose