@misc{diddens_anisotropic_elastic_2008, 
author={Diddens, I.,Murphy, B.,Krisch, M.,Mueller, M.},
title={Anisotropic Elastic Properties of Cellulose Measured Using Inelastic X-ray Scattering},
year={2008},
howpublished = {journal article},
doi = {https://doi.org/10.1021/ma801796u},
abstract = {Plant fibers such as linen are remarkably stiff materials in the longitudinal direction of the fiber. As plant cell walls are composites made of cellulose nanocrystals, the so-called microfibrils, embedded in a disordered matrix, those nanocrystals should exhibit an even higher elastic modulus G. We have determined the elastic properties of cellulose microfibrils via the sound velocities measured by inelastic X-ray scattering (IXS). The IXS technique is particularly sensitive to crystal properties by discriminating the contribution of disordered material. A strong anisotropy is observed, with a much lower elastic modulus perpendicular to the fiber direction (G1 = 15 GPa) than parallel to it (G2 = 220 GPa). The latter modulus is considerably higher than all values previously determined and will have a significant impact on models for the elastic properties of cellulose microfibrils and of composites based on them.},
note = {Online available at: \url{https://doi.org/10.1021/ma801796u} (DOI). Diddens, I.; Murphy, B.; Krisch, M.; Mueller, M.: Anisotropic Elastic Properties of Cellulose Measured Using Inelastic X-ray Scattering. Macromolecules. 2008. vol. 41, no. 24, 9755-9759. DOI: 10.1021/ma801796u}}