Our aim is to build strong, stiff and tough materials from NFC and soft binder units, where NFC acts as the reinforcing agent and fibrils are surrounded by a soft phase. These soft domains act as advanced binder, allowing crack guidance, de?ection and nanoscale lubrication between the filler segments. Our approach is to put emphasis on understanding the role of the binding mechanism between the components and molecular architectures on the nanoscale lubrication and finally on the biomimetic composite properties. The layer properties of adsorbed carboxymethylcellulose-graft-poly(ethylene glycol) (CMC-PEG) on NFC surfaces were studied. In this paper the friction and normal force measurements were performed on nanofibrillated cellulose model film using colloidal probe microscopy. Adsorption of CMC-PEG lowered the friction of cellulose system with more than 80%. That nano-lubrication plays an important role not only in composite film formation but also improves the mechanical performance of free standing films.

Importance of the interfacial forces in mechanical performance of biomimetic polysaccharides-based nanocomposites

245th National Meeting (2013)

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