Hairy Cellulose Nanocrystals

ENCC  (Electrosterically stabilized NanoCrystalline Cellulose)





ENCC is a novel nanocellulose with reactive groups. It consists of "conventional" nanocrystalline cellulose, with carboxylated cellulose  chains protruding from both ends. The chains can be removed by hydrolysis, resulting in NCC with most charges located at both ends. ENCC is being characterized by TEM, AFM, rheology, NMR, XRD etc.

SNCC  (Sterically stabilized NanoCrystalline Cellulose)

We prepare and characterize sterically stabilized nanocrystalline cellulose (SNCC) by periodate oxidation. The morphology and aspect ratio of SNCC can be well controlled by the degree of oxidation, depending on amount of periodate and reaction time. Our research is focused on the viscosity, solubility and strength of SNCC. Since the periodate can be recycled, this method may be a cheap and suitable method to prepare certain nanocrystalline cellulose as desired.

Formation of nanoparticles and stable emulsions

We use natural biopolymers as emulsifying, stabilizing, and reducing agents. In many instances, rather than use harsh chemical processes, it is viable to use natural products. For example, oligo- and polysaccharides can stabilize emulsions and prevent coalescence. It has also been demonstrated in recent times that lignocellulosic biomass can act as reducing agents in chemical reactions. This implies that all plants can, to some extent, behave like antioxidants. 

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