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    Description

    Quantification of the mechanical properties of cellulose nanomaterials is key to the development of new cellulose nanomaterial based products. Using contact resonance atomic force microscopy we measured and mapped the transverse elastic modulus of three types of cellulosic nanoparticles: tunicate cellulose nanocrystals, wood cellulose nanocrystals, and wood cellulose nanofibrils. These modulus values were calculated with different contact mechanics models exploring the effects of cellulose geometry and thickness on the interpretation of the data. While intra-particle variations in modulus are detected, we did not observe a measureable difference in modulus between the three types of cellulose particles. Improved practices and experimental complications for the characterization of cellulosic nanomaterials with atomic force microscopy are discussed.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Wagner, Ryan; Moon, Robert J.; Raman, Arvind. 2016. Mechanical properties of cellulose nanomaterials studied by contact resonance atomic force microscopy. Cellulose. 23(2): 1031-1041.

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    Keywords

    Atomic force microscopy, Cellulose nanomaterials, Cellulose nanocrystals, Cellulose nanofibrils, Contact resonance, Nanomechanics", "Atomic force microscopy, Cellulose nanomaterials, Cellulose nanocrystals, Cellulose nanofibrils, Contact resonance, Nanomechanics

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