The cellulose nanofibers (CNF) were obtained from delignified
wood flour through mechanical fibrillation. A
3 wt.% suspension was prepared from the delignified wood
flour and deionized water, dispersed homogenously using
a laboratory shear mixer, and passed twice through an
ultrafine grinder, a super masscolloider MKCA6-3, using rotational speed of 1440 rpm.
The total grinding time was 16 min. After grinding the dry
matter content of the CNF suspension was increased by
centrifuging to 12 wt.%.