Cellulose Nano Crystals Overview

Cellulose Nano Crystals (CNC) is a primary building block of the cell wall of all living plants. CNC has high mechanical strength modulus of 150 GPa and tensile strength of 10 GPA in line with supreme synthetic material. CNC plays a major role in the structure of the cell wall giving plants their extraordinary strength exemplified by the gigantic dimensions of some forest tress such as Sequoia. This role can be adapted into man-made products utilizing CNC as a nano building block for the enhancement of existing materials and for the production of novel eco-friendly materials.

What is CNC good for?

Foams for composites
and insulation panels

CNC films for coatings
and optical properties

Gas barrier aluminum replacement
in food packaging


Reinforcing of paper
and paperboard

· Reinforcing of acrylic polymers

Additive to plastics
(biobased and synthetic) 

Additive to coating
and barriers materials

How to produce CNC?

CNC can be extracted from any plant material as well as bacteria and animals under controlled acid hydrolysis that lead to the formation of high-purity single crystals suspended in water in dimensions of 5-20 nm width and 100-500 nm length. 

Cellulose fibers contain amorphous and crystalline areas 

TAPPI Nanocellulose Video

Production of CNC from the fibers 

Melodea NCC production

We have developed a unique process that allows utilizing the sludge of the pulp and paper industry as the source for CNC. Pulp and paper mills sludge is produced in millions of tons worldwide as is both environmental and economic burden. A major component of the sludge is tiny cellulose fibers that are washed away during paper manufacturing. Our technologies allow the recovery of these fibers and convert them to valuable CNC product.

Main advantages of sludge as a raw material:

•Investment in fiber growing, collection and handling has already been done

•Most of the required energy and chemicals were already invested

•High availability, zero value

•Utilization of paper mills knowhow, infrastructure and utilities

•Paper mill sludge is converted into a valuable product

•Reduced carbon footprint of the industry 

We can also produce CNC from bleached pulp, and other cellulose sources such as flax and hemp fibers. 

Melodea is increasing the production capacity both in Israel and abroad to meet market demands.