Thursday, January 8, 2015

It is a diverse group of materials which are chemically built up of long chains of bonded molecules


The plastic bag for your purchases. The syringe and the patch at the hospital. Your fleece sweater and your toothbrush. All are examples of products that have plastic as the main ingredient.
"We find that Danish companies over the past year has been very interested in the plastics from biomass, which is under development," says senior consultant Helle Fabiansen from Plastics Industry.
"It is now clear that fossil resources are limited. So unlike a few years ago begins pbt Danish companies pbt now perceive it as a necessity to find alternative raw materials, for it will be the only viable in the long term. "Strong cooperation
Denmark is in a unique position to develop chemicals based on biological materials because of the strong research, we have in research on enzymes and chemical technology. At the same time, we have financially strong commercial enterprises cooperating with the researchers to further develop the technology into commercial products.
It is not just a way to prepare for the oil fades. For if all 600,000 tonnes of plastic consumed annually in Denmark, was made of biological material, pbt the atmosphere could get for between pbt 600,000 and 2.4 million. tonnes of CO2. It displays numbers in a report by the EU's Institute for Prospective Technological Studies.
And forget about recycling cutlery that breaks or melts, when you try to put it in your food. Future bioplastics (or bio-polymers) must have the same characteristics as the plastic, we know, and it must be able to withstand use.
"We are now able to produce the building blocks needed to form the plastic. And we have negotiations pbt with several plastic manufacturing company who are interested in testing our technology. We predict other words, a large market for plastics made from glucose, "says Professor John Woodley from the Department of Chemical Engineering.
The next step is a pilot plant at DTU where the basic elements needed for bioplastics can be produced in such large quantities that interested companies have enough material to make their first attempt to make commercial use only plastic materials.
Novozymes, pbt which specializes in breaking down biomass into glucose, has entered as a commercial partner in the project, because the company could see a perspective in using resources on developing glucose-based plastics.
Chemicals for plastic pbt production is a high value. This means that you can potentially sell a kilo of the glucose-based monomers more expensive than a kilogram of fuel - a technology that Novozymes else also has great expertise.
"It will typically be factories located close to a source of biomass that will be interested in investing in plants for production of chemicals for plastics production. This is where we see a potential market, "says Sven Pedersen. Building blocks of glucose
Paradoxically consisted plastic Ken ancestor celluloid just biomass. Celluloid was first produced in 1862 by refined cotton chemically treated with nitric acid. It was used for combs, glasses, buttons pbt and toys, but was supplanted as more practical oil-based plastic polymers were developed.
It is a diverse group of materials which are chemically built up of long chains of bonded molecules (monomer). It is these chains, known as polymers. A suitable monomer is, for example, pbt ethylene, that is to the plastic polyethylene (such as food containers are made of) when they are connected.
Depending on how the polymers pbt are structured - they can be linear or forming networks like spider pbt web - get the plastic different pbt properties. Therefore, there are thousands pbt of different pbt types of plastic that are suitable for very different purposes. The active glucose attenuates
Typically when one converter oil for plastic, one must therefore use monomer. The crude oil comes through a refinery, and here formed among other oil product Nafta. pbt Naphtha may be broken down into different types of monomers.
To make plastic of glucose, Danish researchers often use the chemical 5-hydroxymethylfurfural (HMF) to form suitable monomers. It is the by splitting water molecules from glucose, which then forms other compounds.
Glucose is a very active substance that likes to go for many other substances. To produce HMF researchers pbt were therefore forced to find catalysts that could curb this urge to react uncontrollably to ensure

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