| 摘要 |
PROBLEM TO BE SOLVED: To provide a cellulose nanofiber film high in transparency and capable of preventing occurrences of thermal expansion and birefringence.SOLUTION: The cellulose nanofiber film includes cellulose nanofibers whose hydroxyl groups are at least partially esterified, whereas the fiber orientation of the cellulose nanofiber film along the thickness direction thereof is 50% or below, whereas the cellulose nanofiber film includes virtually no resins. |
