CNF (NFC, MFC): Cellulose Nanofibrils (nanofibrillated cellulose, microfibrillated cellulose)

Brief description

  • Original material: Dissolving cotton pulp, Bleached sulfate softwood pulp, Bleached sulfate hardwood pulp
  • Preparation: Nanofibrillated the cellulose with high pressure homogenizer or super micro-grinder.
  • Macro morphology: aqueous gels (solid content:0.5-5%), white powder or flexible aerogels.
  • Types: un-modified CNF, Cationically modified CNF, Carboxymethylated CNF, TEMPO-ed CNF. ( We can supply different size , electric charge and function group according your need.)
  • Dispersion: no hard agglomeration for CNF aqueous gels, can be re-dispersed in water after fried-drying or spray-drying.

Price:

Price depends on the quantity. Please check the price.

We are glad to provide FREE CNF sample (100 gram slurry, 1-3% solids) to universities and research institutes for preliminary research. Customer is responsible for the shipping cost.

The CNF free sample is NOT available for commercial reselling.

Please send your inquiry to  contact@celluloselab.com .

The introduction of CNF

Cellulose Nanofibrils (CNF), also called Nanofibrillated cellulose (NFC), Microfibrillated cellulose (MFC) or cellulose microfibril, microfibrillar cellulose, can be viewed as a cellulosic material, composed of expanded high-volume cellulose, moderately degraded and greatly expanded in surface area, and obtained by a homogenization. Its diameter is in the  range 20–60 nm and it has a length of several micrometers. Unlike CNC, CNF exhibits both amorphous and crystalline parts and presents a web-like structure. CNF normally is a viscous and shear thinning aqueous gel at a very low concentration  (between 2 and 7%,  w/w).  This is one of the two main characteristics of such a  nanomaterial,  and the other is its ability to form a transparent film once it is dried.

Both these key properties are linked to its high specific area (at least ten times larger  than that of cellulose fibers) and its extensive hydrogen-bonding ability.

Because CNF is more flexible, longern and has larger surface area than any other fibres, it  is being developed for use in many scales, ranging from addition in food, biodegradable food packaging, pigment, selective delivery/separation, tissue-engineering, nanocomposites upon impregnation by polymers, and other medical and pharmaceutical applications.

Pictures of CNF

different types of NFC

Fig. 1 The picture of different types of CNF   (A) TEMPO-ed CNF, concentration: 0.51%   (B) Cationically modified CNF, DS=0.717, concentration: 0.93%; (C) Carboxymethylated CNF, DS=0.835, left concentration: 0.7% and right concentration: 0.29%   (D) un-modified CNF, concentration: 1.34%

freeze dried NFC

Fig.2 The picture of the freeze dried CNF  (A) un-modified CNF   (B) Cationically modified CNF   (C) Carboxymethylated CNF   (D) TEMPO-ed CNF

The TEM image of NFC

Fig. 3 The TEM of CNF

Fig. 4 The picture of TEMPO-CNF freeze-dried powder