Determination of sulfur and sulfate half-ester content in cellulose nanocrystals: an interlaboratory comparison

Charged functional groups on the surface of cellulose nanocrystals (CNCs) are important for controlling the colloidal stability of suspensions and the interaction of the material with its environment. Quantification of surface groups is therefore an important metric for reproducible production of this nanomaterial. Here we report the results of an interlaboratory comparison (ILC) with twelve participants piloted by National Research Council …