Saturday, September 21, 2013

MFC is fibersturkturer the cellulose molecules in the range of 5-10 nm wide and up to several micro


Swedish development company can now produce super material nano-cellulose at a low price. The material can cause paper enough strength that you can fold a bulletproof vest and eat it afterwards. By Thomas Boel 28 September 2012 kl. 09:03
The strong cellulose molecule is like rebar in reinforced concrete, completely inside the small fibers that hold the wood together. The pure cellulose extracted by smashing cni and weed out everything else around, and that is the destruction Innventia has saved 98% of energy, explains Mikael Ankerfors.
Spectacular qualities have nano cellulose otherwise a part of. It may be mentioned that nanocellulosen cni is strong enough, you can make bulletproof vests of what biodegradable enough, you can throw it in the wild or eat it, and with a chemical addition can be made electrically conductive enough, you can make future electronics of it.
Nano Cellulose covers a range strong cellulose structures which are the residue after the pulp passed through homogenizers, and if one homogenizing milk. It is of wood pulp, what rebar for reinforced cni concrete in which the lignin (and other impurities in the pulp) is that the concrete. These strong fibers have been known and tried mined since the 1980s.
"But it took time astronomical amounts of energy cni to produce it. 30 MWh to produce a ton. Therefore, it was never commercialized at the time, "says Mikael Ankerfors, Research Manager for Innventia, to engineer.
To manufacture cni nano-cellulose by taking cellulosic materials (wood, it is most accessible) and remove all but the cellulose. In practical terms, it is made with a homogenizer under high pressure can only be the smallest fibers cni stay together, while the rest are discarded or get another turn. Based on the other hand floats an incredibly viscous cni gel which is filled with microfibrilleret nano cellulose (MFC), and it is this homogenization Innventia made easier by adding some enzymes that got it all to work well.
With further homogenization and strong acid hydrolysis can stand microfibers down to a nano crystal level. It etches simply the amorphous and therefore weak ties away from the crystal structure, while crossing high pressure, and this is where it changes its name to nanocrystalline cellulose. How cool is that?
The nano-cellulose, as Mikael Ankerfors doing in Sweden, is what we call microfibrillated nano cellulose or nanofibrilliret cni cellulose (NFC). MFC / NFC denotes the same and it should not be confused with nanocrystalliseret cellulose (NCC), which are potentially much cooler, or plain cellulose, despite the transparency must be attributed to be relatively impure and therefore not as cool.
MFC is fibersturkturer the cellulose molecules in the range of 5-10 nm wide and up to several microns long. The sheets of cellulose, Innventia cni produced by the MFC, can typically withstand a tensile strength cni of 200-250 gigapasca. Looking at tensile strength per. mass, making cni it MFC eight times stronger than stainless steel.
"But if you can get the small fibers to be fine in the same direction cni in the microstructure instead of helter-skelter, then we have (at KTH University in Stockholm) seen examples of paper that could withstand the double, ie 400 - 500 GPa, "says Mikael Ankerfors.
The biodegradability account the way for a great future in the food industry. According to Mikael Ankerfors will be able to replace starch and emulsifiers with a carbohydrate-poor alternative, nor will it be able to compete with biodegradable plastic. cni
Also as a barrier material will have a promising future, as it is very close to 100 percent oxygen impermeable. However, it is hydrophilic, and will therefore require protection against moisture, if it needs to maintain the strength. cni
Finally, one with a small chemical addition make nano cellulose electrically conductive, leading the electronics manufacturers such as Japanese Pioneer Electronics to create next generation flexible display of nano-cellulose, while IBM makes computer components cni of it.
"There are already some paper mills that assesses it economically viable to reinforce their paper on nano-cellulose, it also can be used to reinforce plastics. We will probably see in the next 1-2 years, "says Mikael Ankerfors.
So it may be profitable to low carrier bags are not made of plastic, it would be a huge benefit to the environment, perhaps even disposable glass.
Steel typically has a tensile strength of a few hundred MPa. It sounds a little violent that this material cni should be up to 500-1000x stronger cni at. unit area than steel. cni Especially when in the next sentence to read it to weight ratio is only 8x stronger than stainless steel. cni
Are we a factor of 1000 next here? Steel typically has a tensile strength of a few hundred MPa. It sounds a little violent that this material should be up to 500-1000x stronger at. unit area than steel. Especially when in the next sentence to read it to weight ratio is only 8x stronger than stainless steel.

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