The nanostructure of kraft pulp 1: evaluation of various mild drying methods using field emission scanning electron microscopy

摘要: Wood pulp fiber consists of carbohydrate fibrils containing crystalline cellulose microfibrils a few nanometer width. The structure the fibril in water is currently unclear due to difficulty imaging at resolution. An alternative method observe sample dried with mild drying preserve wet sample. In this study, we studied softwood kraft fibers which were various methods and then imaged by field emission scanning electron microscopy Both samples, as well air showed 10–20 nm wide fibrils, width corresponded microfibril or bundles them. sample, was critical point liquid CO2 (CPD), mainly 20–40 thick addition fibrils. existence implies that itself has swelling nature water, although possibility an artifact CPD process could not be excluded. Further investigation extent found samples reflect nanostructure warranted.