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 -
Self-Healing Material Pulls Carbon Out Of The Air
'... could seal the punctures.' - Raymond Z. Gallun, 1951.
Shapeshifting Materials Transform By Light
'Its lines wavered, flowed, and then painfully reformed.'- Philip K. Dick, 1957.
Superstrong Multilayer Metal-Graphene Composite Material
Negligible increase in weight increased material strength by hundreds of times.
Amphibio 3D Printed Gill Shirt
'... we can descend and live down there at one of those year-round aquatic resorts.' - Philip K. Dick, 1966.
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.
Unfurl The Future! Huawei Mate X versus Galaxy Fold
'A paper thin polycarbon screen unfurled silently from the top of the unit and immediately grew rigid.'
Amazon Echo And Google Home Should Have Morality Software
'The Dwoskin Morality Rating-Computer could 'spot the slightest tendency to deviation' from the social norm...'
China Building Robot Wives
'Want a life-companion, a pleasant one?'
China Social Credit System Like State-Run Whuffie
'At least there was no mandatory Whuffie check on the monorail platform...'
Project Soli Radar Gesture Chip Now FCC Approved
'He waved his hand and the circuit switched abruptly.'
Stan, Robot Valet, Will Drag Your Car Away
'He activated the grapple tracks. '
Jibo Home Robot Says Goodbye, Is Killswitched
'It resembles an oyster....'
Johns Hopkins Says Asteroid Deflection Will Be Difficult
'This obelisk is one huge deflector mechanism...'
Fabric Automatically Cools Or Insulates Based On Environment
'...a high-efficiency filter and heat-exchange system.'
Deepfakes From OpenAI GPT-2 Algorithm
'How can you compete with an IBM heavy-duty logomatic analogue?'
John Deere Self-Driving Tractor
'The huge plow... seemed to shake itself - and began to move back southward.'
North Focals Smart Glasses Provide Augmented Reality In Style
'The world ... is drenched in unfamiliar information all the way to the horizon.'
Tesla Driver Caught Napping Behind The Wheel
'Mary Risling settled back for a little nap...'
Hayabusa 2 To Begin Asteroid Mining
'We must dig down, and then doubtless we shall find the metal.'
Ionocraft Drone Powered By Electrohydrodynamic Thrust
'He saw one hiss by him as he rounded the corner, trailing a short whip antenna...'
Purdue Pharma Ready To Profit From OxyContin Use Or Addiction Recovery
'It may be organic damage. It may be permanent. Time'll tell, and only after you are off Substance D for a long while.'
More SF in the News Stories
More Beyond Technovelgy science news stories