Reinterpretation of the mechanical reinforcement of polymer nanocomposites reinforced with cellulose nanorods

Sapkota, Janak; Garcia, Julio Cesar Martinez; Lattuada, Marco

doi:10.1002/app.45254

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Reinterpretation of the mechanical reinforcement of polymer nanocomposites reinforced with cellulose nanorods

Sapkota, Janak Chair of Polymer Processing, Department of Polymer Engineering and Science, Montanuniversitaet Leoben, Austria
Garcia, Julio Cesar Martinez Department of Chemistry, University of Fribourg, Switzerland
Lattuada, Marco Department of Chemistry, University of Fribourg, Switzerland

15.09.2017

Published in:

Journal of Applied Polymer Science. - 2017, vol. 134, no. 35, p. 45254

English The mechanical reinforcement of nanocomposites containing nanorods-like fillers such as cellulose nanocrystals (CNCs) isoften interpreted by adapting the classical parallel–series model, assuming a simple hyperbolic dependence between the percolationthreshold and aspect ratio. However, such assumptions are valid only for nanorods with high aspect ratio and often are misinterpretingthe reinforcement obtained at low volume fraction of filler loading. To elucidate this intriguing scenario, we proposed a newapproach and validated it by compiling and reinterpreting some of available literature that represent the experimental reinforcementwith CNCs. Our approach showed better accuracy, specifically for the cases of CNC nanorods with lower aspect ratio. We concludethat this route permits a more realistic evaluation of the mechanical reinforcement, where a physical parameter accounting the polymerfiller association is introduced.

Faculty

Faculté des sciences et de médecine

Department

Département de Chimie

Language