| abstract |
(1) the step of preparing a 1.0% by mass CNF aqueous dispersion, (2) adding a coloring material to the CNF aqueous dispersion and stirring with a vortex mixer, and (3) the film thickness of the CNF dispersion containing the coloring material is 0.15 The step of inserting the two sheets of glass into mm, (4) the step of observing the film of the CNF aqueous dispersion containing the colorant sandwiched between the two sheets of glass with a microscope, and (5) the observed agglomerates to their size (long diameter). A method for evaluating a CNF dispersion, comprising a step of classifying according to (6) a CNF dispersion index from the number of classified aggregates and evaluating the dispersibility of the CNF aqueous dispersion. |