Recent Strategies in Preparation of Cellulose Nanocrystals and Cellulose Nanofibrils Derived from Raw Cellulose Materials

Porous Materials from Cellulose Nanofibrils

Preparation and Characterization of Cellulose Nanocrystals from Bamboo Pulp

Cellulose nanocrystals (CNCs) can be obtained from bamboo pulp by hydrolysis with sulfuric acid. Firstly, the authors conducted a series of experiments under different conditions, and concluded that the optimal parameters were as follows: sulfuric acid concentration 60%, temperature 45 °C, the time is 90 minutes and the solid-liquid ratio is 1:8. Then, transmission electron microscopy (TEM), Fo...

Preparation of cellulose nanoparticle from cinnamon

The preparation of cellulose nanostructures is considered in this paper. Cellulose nanoparticles(nano cellulose) were extracted from cinnamon for the first time. The chemically-induceddestruction strategy based on controlled strong acid hydrolysis treatment was used for dissolutionof lignin and fragmentation of cellulose to nano sized structure. The products werecharacterized by scanning electr...

Photoresponsive Cellulose Nanocrystals

In this communication a method for the creation of fluorescent cellulose nanoparticles using click chemistry and subsequent photodimerization of the installed side‐ chains is demonstrated. In the first step, the primary hydroxyl groups on the surface of the CNCs were converted to carboxylic acids by using TEMPO‐mediated hypohalite oxidation. The alkyne groups, essent...

All-Cellulose Composite Fibers Obtained by Electrospinning Dispersions of Cellulose Acetate and Cellulose Nanocrystals

All-cellulose composite fibers were produced by electrospinning dispersions containing cellulose acetate (CA) and cellulose nanocrystals (CNCs). Precursor polymer matrices were obtained after dispersion of CA with different degrees of substitution in a binary mixture of organic solvents. The obtained fibers of CA loaded with CNCs had typical widths in the nanoand micro-scale and presented a gla...