Saturday, September 14, 2013

First reported self-healing polymer that spontaneously and independently ... - Phys.Org

Sep 13, 2013
First reported self-healing polymer that spontaneously and independently repairs itselfEnlarge

A cylindrical sample of the elastomer mends itself after being cut in two by a razor blade and can be manually stretched without rupture.

Scientists in Spain have reported the first self-healing polymer that spontaneously and independently repairs itself without any intervention. The new material could be used to improve the security and lifetime of plastic parts in everyday products such as electrical components, cars and even houses.

The researchers have dubbed the material a 'Terminator' polymer in tribute to the shape-shifting, molten T-100 terminator robot from the Terminator 2 film.

The research is published in the Royal Society of Chemistry journal Materials Horizons.

Self-healing polymers that can spontaneously achieve quantitative healing in the absence of a catalyst have never been reported, until now. The scientists prepared the self-healing thermoset elastomers from common polymeric starting materials using a simple and inexpensive approach.

A video shows that the permanently cross-linked poly(urea-urethane) elastomeric network completely mends itself after being cut in two with a razor blade. A metathesis reaction of aromatic disulphides, which naturally exchange at room temperature, causes the regeneration.

This video is not supported by your browser at this time.

Scientists report the first self-healing thermoset elastomer that requires no intervention to induce its repair. Taken from the following paper: A Rekondo et al, Mater. Horiz., 2014.

The polymer behaves as a Velcro-like sealant or adhesive, displaying an impressive 97 per cent healing efficiency in just two hours. The researchers show that after cutting the material into two separate pieces with a razor blade and allowing it to self-heal, the material is unbreakable when stretched manually.

The authors said: "The fact that poly(urea-urethane)s with similar chemical composition and mechanical properties are already used in a wide range of commercial products makes this system very attractive for a fast and easy implementation in real industrial applications."

Explore further: A self-healing protective coating for concrete

More information: pubs.rsc.org/en/content/articlelanding/2013/mh/c3mh00061c

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User comments : 4

Adjust slider to filter visible comments by rank

Display comments: newest first

Szkeptik

not rated yet Sep 13, 2013

Nice. Also that's a T-1000, not a T-100. Swarzenegger is a T-101.

Anda

not rated yet Sep 13, 2013

Nice. Also that's a Schwarzenegger, not a Swarzenegger

CavemanWill

not rated yet 21 hours ago

Nice. Also that's a...oh wait that was all right.

sirchick

not rated yet 20 hours ago

Nice. Also that's a...oh wait that was all right.

Actually, he forgot a full stop. ;)

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First reported self-healing polymer that spontaneously and independently repairs itself
Sep 13, 2013
First reported self-healing polymer that spontaneously and independently repairs itselfEnlarge

A cylindrical sample of the elastomer mends itself after being cut in two by a razor blade and can be manually stretched without rupture.

Scientists in Spain have reported the first self-healing polymer that spontaneously and independently repairs itself without any intervention. The new material could be used to improve the security and lifetime of plastic parts in everyday products such as electrical components, cars and even houses.

The researchers have dubbed the material a 'Terminator' polymer in tribute to the shape-shifting, molten T-100 terminator robot from the Terminator 2 film.

The research is published in the Royal Society of Chemistry journal Materials Horizons.

Self-healing polymers that can spontaneously achieve quantitative healing in the absence of a catalyst have never been reported, until now. The scientists prepared the self-healing thermoset elastomers from common polymeric starting materials using a simple and inexpensive approach.

A video shows that the permanently cross-linked poly(urea-urethane) elastomeric network completely mends itself after being cut in two with a razor blade. A metathesis reaction of aromatic disulphides, which naturally exchange at room temperature, causes the regeneration.

This video is not supported by your browser at this time.

Scientists report the first self-healing thermoset elastomer that requires no intervention to induce its repair. Taken from the following paper: A Rekondo et al, Mater. Horiz., 2014.

The polymer behaves as a Velcro-like sealant or adhesive, displaying an impressive 97 per cent healing efficiency in just two hours. The researchers show that after cutting the material into two separate pieces with a razor blade and allowing it to self-heal, the material is unbreakable when stretched manually.

The authors said: "The fact that poly(urea-urethane)s with similar chemical composition and mechanical properties are already used in a wide range of commercial products makes this system very attractive for a fast and easy implementation in real industrial applications."

Explore further: A self-healing protective coating for concrete

More information: pubs.rsc.org/en/content/articlelanding/2013/mh/c3mh00061c

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Feb 20, 2013

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It heals and grows together: Polymer with amazing self-healing properties

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(PhysOrg.com) -- Sooner or later, a cut to the skin or a broken bone will heal on its own; however, a scratch to a car's paint or a tear in the wing of an airplane will not. Materials with self-healing properties ...

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User comments : 4

Adjust slider to filter visible comments by rank

Display comments: newest first

Szkeptik

not rated yet Sep 13, 2013

Nice. Also that's a T-1000, not a T-100. Swarzenegger is a T-101.

Anda

not rated yet Sep 13, 2013

Nice. Also that's a Schwarzenegger, not a Swarzenegger

CavemanWill

not rated yet 21 hours ago

Nice. Also that's a...oh wait that was all right.

sirchick

not rated yet 20 hours ago

Nice. Also that's a...oh wait that was all right.

Actually, he forgot a full stop. ;)

More news stories

Researchers identify endocrine-disrupting chemical in bottled water

(Phys.org) —A team of researchers in Germany has identified an endocrine-disrupting chemical (EDC) found in samples taken from commercial bottled water. In their paper published in PLoS ONE, the team d ...

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