
Open access
Date
2021-04-15Type
- Journal Article
Citations
Cited 13 times in
Web of Science
Cited 15 times in
Scopus
ETH Bibliography
yes
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Abstract
Crystalline cellulose, the most abundant natural polymer on earth, features exceptional physical and mechanical properties. Using atomistic simulation, this study reports the mechanical behavior of cellulose-cellulose nanocrystal hydrophilic interface and systematically examines the impact of loading direction, interfacial moisture, misalignment and surface types. The density, orientation or distribution of interfacial hydrogen bonds are shown to explain the series of findings presented here, including stick-slip behavior, stiffness recovery after an irreversible slip, direction-dependent behavior and weakening induced by hydration or misalignment. Correlation analysis shows that, regardless of the various loading conditions, the interfacial stress, shear velocity and interaction energy are strongly correlated with the density of interfacial hydrogen bonds, which quantitatively supports the central role of hydrogen bonding. Based on this correlation, the friction force rendered by a single hydrogen bond is inferred to be fHB ∼1.3 E-10 N under a shearing speed of 1 m s−1. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000467925Publication status
publishedExternal links
Journal / series
Carbohydrate PolymersVolume
Pages / Article No.
Publisher
ElsevierSubject
Cellulose nanocrystal; Interface; Stick-slip; Friction; Adhesion; Hydrogen bondOrganisational unit
03806 - Carmeliet, Jan / Carmeliet, Jan
03806 - Carmeliet, Jan / Carmeliet, Jan
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Show all metadata
Citations
Cited 13 times in
Web of Science
Cited 15 times in
Scopus
ETH Bibliography
yes
Altmetrics