Cellulose has been the most important polymer for the development of humankind. In its technical form (mainly cotton, chemical wood-based pulps and flax fibre, or other plant-based fibres), it has had a multitude of applications spanning thousands of years -from papermaking to production of textiles, to the first thermoplastics and beyond . The concept of the 'Cellulose gap' has highlighted the need to find replacement feedstocks to cotton, to satisfy our increase in population and standards of living. However, with wood-based chemical pulps as a replacement feedstock, recent trends have shown that existing paper-grade pulp mills are decreasing in profitability, and production is generally below capacity (CEPI - 2020). Therefore, significant efforts are being put into bulk valorisation of a range of chemical pulps, other cellulosic materials and their precursor feedstocks. In the short term, there is clear interest in the use of fibrous cellulosic materials, on all length-scales (nano to macrofibrillar), in applications such as improved-strength composite materials . Paper-grade pulp, specifically, is finding rapid adoption in foam-forming . A longer-term goal is the use of paper-grade pulp ) and perhaps even lower purity and recycled cellulosics in regenerated fibre production . The topic of nanocelluloses also has significant long-term interest -as substrates for materials applications , mainly based on the high aspect-ratio that nanocellulose provides in the formation of high-strength composites and colloids . However, there are also more interesting intrinsic properties, such as, nanocelluloses axial chirality and the potential for asymmetric chemical modification , that allow for the preparation of novel materials. These nano-scaled particles have been exploited to form a range of porous materials, where a complex network with various degrees of long-range order is present . The implementation of such foams or aerogels in application is currently compromised due to the challenges in altering their surface chemistry, whilst preserving their complex architectures.