Nanopaper - Paper Tough As Steel

Nanopaper made of gently processed natural cellulose nanofibers is found to have remarkable strength; it has a tensile strength almost equaling that of structural steel.

Lars Berglund from the Swedish Royal Institute of Technology in Stockholm, Sweden found that the mechanical processes used to pulp wood damages the natural fibers, weakening them. Berglund developed a process to extract the fibers, keeping their properties intact.

The secret to the nanopaper's performance is not only the strength of the undamaged cellulose fibres, but also they way they are arranged into networks. Although strongly bound together, they are still able to slip and slide over each other to dissipate strains and stresses.

The individual cellulose fibres are also much smaller than in conventional paper. "A regular paper network has fibres 30 micrometres in diameter, here we are at a scale three orders of magnitude smaller," says Berglund. "The material [has] very small defects compared with a conventional paper network."

Mechanical testing shows it has a tensile strength of 214 megapascals, making it stronger than cast iron (130 MPa) and almost as strong as structural steel (250 MPa). Normal paper has a tensile strength less than 1 MPa. The tests used strips 40 millimeters long by 5mm wide and about 50 micrometers thick.

Your Obedient Serpent thought immediately of the material used in Jules Verne's 1866 classic Robur the Conqueror.

...Unsized paper, with the sheets impregnated with dextrin and starch and squeezed in hydraulic presses, will form a material as hard as steel. There are made of it pulleys, rails, and wagon-wheels, much more solid than metal wheels, and far lighter. And it was this lightness and solidity which Robur availed himself of in building his aerial locomotive...
(Read more about Verne's paper steel)

See also this attempt to combine two plastics to create 'metal', as well as efforts to spin webs strong as steel.

From New 'super-paper' is stronger than cast iron via Charles Stross; thanks to Your Obedient Serpent for contributing this item and the reference.

Scroll down for more stories in the same category. (Story submitted 7/1/2008)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 3 )

Related News Stories - (" Material ")

3D Printed Damascus Steel Now Possible
'... lined with durite, that strange close-packed laboratory product.' - Robert Heinlein, 1939.

3D Printing Of Metallic Glass
Great Scott!

Draw Circuits With Conductive Ink
'It's rewiring things... squeezing silver toothpaste in a ribbon along the printed circuitry.'

How To Encode The 'Memory' Of Materials
'Just jar it, and it falls into that structure like a rubber figure returning to shape.' - Samuel R. Delany, 1966.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Jet-Powered Flying Suits Tested By Navy
'With his motor in operation, he moves like a diver, head foremost...'

Pub Installs Electrified Fence Around Bar
'I start twelve immensely strong wires--naked, not insulated --from a big dynamo...'

What Does A Tesla Full Self-Driving Car See?
'All objects within my panoramic gaze trembled and vibrated like quick motion pictures...'

BioVYZR Is Ready, Anti-Covid19 PAPR Lovers
'Some clad in the insulated space-suits, with their transparent glassite helmets.'

Tesla Will Have Metal Gear Snake Autocoupler, Musk Confirms
'Its motion was so swift, complex, and perfect that at first I did not see it as a machine, in spite of its metallic glitter.'

Starlink Satellites Leading Edge On-Orbit Debris Mitigation
Propulsion-assisted orbital decay, brought to you by SpaceX.

Healight Ultraviolet Endotracheal Device Has Covid-19 Treatment Potential
'He applied the tip of the instrument to the interior of the wound...'

Parents Use AI To See One Last Message From Their Deceased Son
'...what's to keep me from showing face, Man?'

Satoshi Tomizu Creates Pocket Universes And Worldcraft Bubbles In Glass
'The Worldcraft bubble glittered, catching the light...'

Space Hero Inc. Offers Trip To ISS As Reality Show Prize
'This is Elmer Schmitz, presenting to you the finalists in our Aviation Quiz Program...'

I Love Ceiling-Mounted Robots
'Immediately an enormous apparatus fell on to her out of the ceiling...'

Armano Remote Control Excavator
'The bulldozer moved through the... mine... '

OK, NASA 3D Printer Of Food Not Yet Star Trek Food Synthesizer
Maybe not, but we're seeing definite progress.

Kelly Clarkson Show Like Black Mirror '15 Million Merits'
'These people are pieces of software called avatars.'

Salto Jumping Robot Now Sticks Landing!
'Lucky touched the leap knob and the hopper's leg retracted.'

Gyroscopic Median-Straddling Mass Transit Vehicles
'It was among these leviathans that the little gyrocar was daring to thrust its puny self...'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.