Fine fibre fractions in wood pulp may contribute to advantageous paper properties, but in some instances their removal from pulp may be beneficial to the production process of certain paper grades. In order to study the suitability of fine fibre fractions for the production of nanocellulose as an alternative use option, sulfite pulp was fractionated and homogenised, and cellulose nanopapers were produced. Characterisation revealed that fine fibre fractions were more easily homogenised than long fibres. Aqueous suspensions of nanocellulose produced from fines showed remarkably reduced viscosity compared to nanocellulose derived from long fibres. Nanopapers produced from all nanocellulose variants showed roughly similar mechanical performance. Only nanopaper produced from primary fines-derived nanocellulose deviated in that it showed a comparably high modulus of elasticity at a low strain at failure. Overall, fine fibre fractions separated from wood pulp were found to be highly suitable for nanocellulose production.

木浆中的细纤维级分可能有助于提高纸的性能，但在某些情况下，从纸浆中去除细级纤维可能对某些纸种的生产过程有利。为了研究细纤维级分作为纳米纤维素生产的替代选择的适用性，将亚硫酸盐纸浆分馏并均质化，并生产了纤维素纳米纸。表征表明，细纤维部分比长纤维更容易均质化。与由长纤维衍生的纳米纤维素相比，由细粉产生的纳米纤维素的水悬浮液显示出显着降低的粘度。由所有纳米纤维素变体生产的纳米纸显示出大致相似的机械性能。仅由源自细粉的纳米纤维素生产的纳米纸的偏差在于，它在较低的破坏应变下显示出相当高的弹性模量。总体而言，发现从木浆中分离出的细纤维级分非常适合用于纳米纤维素生产。