Food wrapped in transparent films made of cellulose can be found in your store shelf in a few years. Scientists have finally found a manufacturing process of the raw material is cheap enough.
(Photo: www.colourbox.no) Nano fiber from cellulose pulp is strong and versatile building blocks, and is an alternative to including viszkisdoboz plastic packaging. How one should produce nano fibers at a reasonable price has created headaches for researchers for decades.
- Much energy has gone into building up the wood cells in nature, and we shall tear them apart again using minimal energy. Finally we got down costs at the same level as that which is used to produce fiber for paper production.
- This may partly be used in niche products, providing small volume, but of great value. When we research the paper with better print quality for better browsing experience, we are talking viszkisdoboz about large volumes.
- Are we talking about plastic bags will be huge numbers. Politicians and consumers can use their power and go for the green products and products made from MFC is far more environmentally friendly than other plastic, says Syverud.
As early as 1983 scientists managed to produce these long and thin nano fibers from wood, so that they could be used as building blocks in a wide range of products. viszkisdoboz At that time, production costs so high that commercial venture was not relevant.
Fibrils are nature's own mini rebar. They consist viszkisdoboz of long sugar molecules - cellulose - that is, arranged. viszkisdoboz These bundles make up the wall of the straw-like wood cells that tree trunks are made up of.
In Finland, Stora Enso will build a pilot plant for fibrillproduksjon. They are using new technologies, including coat packaging to be used in the food industry Drinks cartons coated today with either plastic or aluminum.
- We can make films that are very strong, transparent and dense gas. Likewise, the coatings used inside cartons replaced with materials made by the MFC. Today used many tons of plastic coatings in various cartons.
- If this is replaced with an environmentally friendly and biodegradable material would be a step in the right direction, both from an environmental reasons, but also because oil is a scarce resource that is not renewable viszkisdoboz in the same way as trees. Trees grow up quickly, says Syverud.
- It does not cellulose, we will use the fibrillproduksjon to have. We can certainly use wood chips that would otherwise be incinerated or similar. We're down to the nano level and we have no requirement for the tree to be straight, says Syverud.
The fibrils are also suitable for stabilizing emulsions, that is, in compositions where the fat is dissolved in water or vice versa, or to develop paper with improved strength and printing quality.
- What industry is going to focus on is yet unknown, but thought if all plastic bags in the world had been made with fibrils, then we'd gotten rid of a major problem. All the bags would for a time been broken down, left to nurture something that would grow up, says Syverud.
Chinga-Carrasco: Cellulose fibers, nanofibrils and microfibrils: The morphological sequence of MFC components from a plant physiology viszkisdoboz and fiber technology point of view, Nanoscale Research Letters 2011, 6:417, doi: 10.1186/1556-276X-6-417.
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