Rheological Behaviors of CNC/ChNF Suspension and Physical Properties of Anisotropic Film
Vol. 59, No. 6, pp. 323-328,
Dec. 2022
10.12772/TSE.2022.59.323
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Abstract
In this study, the effect of chitin nanofiber (ChNF) on the physical behaviors of
cellulose nanocrystal (CNC) in suspension and solid states was investigated using polarized
optical microscopy, rotational rheometry, and wide-angle X-ray scattering system. ChNF
showed a significant effect on the cholesteric phase of CNC suspension, mainly owing to
the electrostatic attraction and hydrogen bonding between ChNF and CNC. In turn, the
increase of ChNF content reduced the size of the cholesteric domain. The applied shear
force on the suspension changed the cholesteric phase to a nematic structure that was
maintained after the solidification. This improved the mechanical strength of the resulted
film along the shear direction.
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