Skip to Main content Skip to Navigation
Journal articles

AFM PeakForce QNM mode: Evidencing nanometre-scale mechanical properties of chitin-silica hybrid nanocomposites

Abstract : PeakForce Quantitative Nanomechanical Mapping (QNM) AFM mode was used to explore the mechanical properties of textured chitin-silica hybrid films at the nanoscale. The influence of the force applied by the tip on the sample surface was studied for standard homogeneous samples, for chitin nanorods and for chitin-silica hybrid nanocomposites. Thick films of superimposed chitin nanorods showed a monotonous increase of DMT modulus (based on the Derjaguin-Muller-Toporov model) owing to an increase in modulus at the interface between nanorods due to geometrical constraints of the AFM acquisition. A similar variation of DMT modulus was obtained for chitin-silica hybrid thick films related to mechanical strengthening induced by the presence of silica. This work revealed the role of the organic-inorganic interface, at the nanoscale, in the mechanical behaviour of textured materials using PeakForce QNM mode, with optimized analysis conditions.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-01399339
Contributor : Florian Doucet <>
Submitted on : Friday, November 18, 2016 - 4:20:48 PM
Last modification on : Tuesday, September 22, 2020 - 3:39:59 AM

Identifiers

Citation

Georgiy Smolyakov, Sébastien Pruvost, L. Cardoso, B. Alonso, E. Belamie, et al.. AFM PeakForce QNM mode: Evidencing nanometre-scale mechanical properties of chitin-silica hybrid nanocomposites. Carbohydrate Polymers, Elsevier, 2016, 151, pp.373-380. ⟨10.1016/j.carbpol.2016.05.042⟩. ⟨hal-01399339⟩

Share

Metrics

Record views

959