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1.	Guccini, Valentina, et al. (author) Inducing nematic ordering of cellulose nanofibers using osmotic dehydration 2018 In: Nanoscale. - : Royal Society of Chemistry. - 2040-3364 .- 2040-3372. ; 10:48, s. 23157-23163 Journal article (peer-reviewed)abstract The formation of nematically-ordered cellulose nanofiber (CNF) suspensions with an order parameter fmax ≈ 0.8 is studied by polarized optical microscopy, small-angle X-ray scattering (SAXS), and rheological measurements as a function of CNF concentration. The wide range of CNF concentrations, from 0.5 wt% to 4.9 wt%, is obtained using osmotic dehydration. The rheological measurements show a strong entangled network over all the concentration range whereas SAXS measurements indicate that at concentrations >1.05 wt% the CNF suspension crosses an isotropic-anisotropic transition that is accompanied by a dramatic increase of the optical birefringence. The resulting nanostructures are modelled as mass fractal structures that converge into co-existing nematically-ordered regions and network-like regions where the correlation distances decrease with concentration. The use of rapid, upscalable osmotic dehydration is an effective method to increase the concentration of CNF suspensions while partly circumventing the gel/glass formation. The facile formation of highly ordered fibers can result in materials with interesting macroscopic properties.
2.	Schütz, Christina, et al. (author) Rod Packing in Chiral Nematic Cellulose Nanocrystal Dispersions Studied by Small-Angle X-ray Scattering and Laser Diffraction 2015 In: Langmuir. - : American Chemical Society. - 0743-7463 .- 1520-5827. ; 31:23, s. 6507-6513 Journal article (peer-reviewed)

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Type of publication: journal article (2)

Type of content: peer-reviewed (2)

Author/Editor: Fall, Andreas (2)Undo refine; Agthe, Michael (2); Salazar-Alvarez,... (2)Undo refine; Guccini, Valentina (2); Schütz, Christina (2); Bergström, Lennart (1); show more...; Yu, Shun (1); Gordeyeva, Korneliya (1); Plivelic, Tomás (1); Trushkina, Yulia (1); Gordeyeva, Korneliya ... (1); Lagerwall, J. P. F. (1); Salajkova, M. (1); show less...

University: Royal Institute of Technology (2); Stockholm University (2); RISE (2); Lund University (1)

Language: English (2)

Research subject (UKÄ/SCB): Natural sciences (2); Engineering and Technology (2)

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