Self-Healing Polymer Works Without Catalyst
For the first time, a self-healing polymer has been demonstrated that does not require an additional catalyst to start the process.
(Self-healing polymer requires no catalyst)
A cylindrical sample of a polymer (a) was cut in half (b and c)
and the two halves were then allowed to stand for 2 hours by
simple contact (d). After that time, the material could be manually
stretched without rupture (e and f).
(credit: Royal Society of Chemistry)
Self-healing polymers have been able to mend themselves by reforming broken cross-linking bonds, but that requires an external catalyst (trigger) to promote bond repair, such as heat, light, or specific environmental conditions, such as pH.
Ibon Odriozola at the CIDETEC Centre for Electrochemical Technologies in Spain used a poly(urea–urethane) elastomeric network, which completely mended itself after being cut in two by a razor blade. It is the metathesis reaction of aromatic disulphided (which naturally exchange at room temperature) that causes regeneration.
The blogosphere is awash with attention-grabbing headlines regarding "Terminator" polymers, referring to the self-healing characteristics of the T-1000 robot from Terminator 2.
However, real sf fans know that the self-healing material idea is much older. For example, you might be familiar with the self-healing houses from brilliant writer JG Ballard's 1962 story The Thousand Dreams of Stellavista.
Even better, consider the self-healing plastic from Golden Age great Raymond Z. Gallun's 1951 short story Asteroid of Fear, which was perfect for asteroid greenhouses:
But the wide roof was all the way up, now—intact. It made a great, squarish bubble, the skin of which [a 'transparent, wire-strengthened plastic '] was specially treated to stop the hard and dangerous part of the ultra-violet rays of the sun, and also the lethal portion of the cosmic rays. It even had an inter-skin layer of gum that could seal the punctures that grain-of-sand-sized meteors might make.
Via Kurzweil AI; special thanks to Pete for contributing the tip on this story.
Scroll down for more stories in the same category. (Story submitted 9/16/2013)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
Crystalized Light Created At Princeton
'It will be matter, matter made of light...'- John W. Campbell, 1930.
New Material Is One Molecule Thick
'Hasan always pitched a Gauzy - a one-molecule-layer tent...'- Roger Zelazny, 1966.
Vantablack Is Blacker Than Your Black
'Well, we have a black coating now that’s ninety-nine percent absorptive...'- Dpc Smith, 1934.
Shatterproof Phone Screens Coming Soon
'It was like the pounding of a rock...'-Clifford Simak, 1963.
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.
'Hello, Computer!' Intel's Core M Catches Up To Scotty
'Well, isn't that quaint!'
Visual Speech Recognition - When Will HAL Read Lips For Real?
Automating lip reading.
MIT's Robotic Cheetah Runs Free - And Frolics In The Grass
'THEY sent A SLAMHOUND on Turner's trail...'
Flying Robot Has An Arm
Drones with arms.
Strati 3D Printed Car
'You rode in it - you know how good it is.'
Tracking Spinning Space Junk
'Loose nuts and bolts... had been accumulating in Earth orbit'
Baidu Kuaisou Dune Poison Snooper Chopsticks
'Unobtrusive inspections with... snoopers... Will it be chaumas - poison in the food?'
Crystalized Light Created At Princeton
'It will be matter, matter made of light...'
The Amazing Gravity-Assisted Journey Of Rosetta
'...We used the [moon's] attraction to give us additional starting speed'
AirDog Auto-Follow Drone Captures Your Awesomeness
'Tight mid-shot and pull out on but behind me...'
Dell's Venue 8 7000 Tablet With RealSense Depth-Mapping
Focus on any part of a picture later.
Google's Cartographer Backpack For Indoor Mapping
'He reached to unsnap the cartograph from his belt.'
T-Mobile Sues Huawei Over Button Pushing Robot Idea From The 1930's
'Not the slightest change in their working betrayed the fact that they were now being directed by a machine instead of human beings.'
Hayabusa-2 Asteroid Cannon Strategy From 1950's SF Novel
'Fire streaked in a thin line from the muzzle of a cannon-like tube...'
Dyson 360 Eye Robot Vacuum Cleaner
'It vacuum-cleaned... or polished, consulting tapes in its idiot memory to decide which.'
First 3D Printer In Space?
'It can be mass-produced only in the orbiting factories...'
More SF in the News Stories
More Beyond Technovelgy science news stories