Home / Knowledge / News / Textiles / Rochester Univ researchers create new polymer
Rochester Univ researchers create new polymer
12
Feb '16
Courtesy: University of Rochester
Courtesy: University of Rochester
A research team led by Chemical Engineering Professor Mitch Anthamatten at the University of Rochester in the US created a material that undergoes a shape change that can be triggered by body heat alone, opening the door for new medical and other applications.

The material developed by Anthamatten and graduate student Yuan Meng is a type of shape-memory polymer, which can be programmed to retain a temporary shape until it is triggered - typically by heat - to return to its original shape, the University said on its website.

“Tuning the trigger temperature is only one part of the story,” said Anthamatten. “We also engineered these materials to store large amount of elastic energy, enabling them to perform more mechanical work during their shape recovery”

The key to developing the new polymer was figuring out how to control crystallization that occurs when the material is cooled or stretched. As the material is deformed, polymer chains are locally stretched, and small segments of the polymer align in the same direction in small areas - or domains—called crystallites, which fix the material into a temporarily deformed shape. As the number of crystallites grows, the polymer shape becomes more and more stable, making it
increasingly difficult for the material to revert back to its initial - or “permanent” - shape.

The ability to tune the trigger temperature was achieved by including molecular linkers to connect the individual polymer strands. Anthamatten's group discovered that linkers inhibit - but don't stop - crystallization when the material is stretched. By altering the number and types of linkers used, as well as how they're distributed throughout the polymer network, the Rochester researchers were able to adjust the material's stability and precisely set the melting point at which the shape change is triggered.

Heating the new polymer to temperatures near 35° C, just below the body temperature causes the crystallites to break apart and the material to revert to its permanent shape.

“Our shape-memory polymer is like a rubber band that can lock itself into a new shape when stretched,” said Anthamatten. “But a simple touch causes it to recoil back to its original shape.”

Having a polymer with a precisely tunable trigger temperature was only one objective. Of equal importance, Anthamatten and his team wanted the material to be able to deliver a great deal of mechanical work as the shape transforms back to its permanent shape. Consequently, they set out to optimize their polymer networks to store as much elastic energy as possible.

“Nearly all applications of shape memory polymers will require that the material pushes or pulls on its surroundings,” said Anthamatten. “However, researchers seldom measure the amount of mechanical work that shape-memory polymers are actually performing.”

Anthamatten's shape-memory polymer is capable of lifting an object one-thousand times its weight. For example, a polymer the size of a shoelace - which weighs about a gram - could lift a litre of soda.

According to Anthamatten the shape-memory polymer could have a variety of applications, including sutures, artificial skin, body-heat assisted medical dispensers, and self-fitting apparel. (SH)

Fibre2Fashion News Desk – India

Must ReadView All

Courtesy: American Apparel

Apparel/Garments | On 25th Feb 2017

Gildan to make some American Apparel products outside US

Gildan Activewear, which recently acquired US fashion brand American...

Courtesy: Kolon Sport

Apparel/Garments | On 25th Feb 2017

Kolon Sport to set up JV with ANTA for Chinese market

Kolon Sport, an outdoor gear and clothing brand of Korea based Kolon...

Designer Karishma Jumani with Niraj Jawanjal, founder and director of IIFW. Courtesy: IIFW

Textiles | On 25th Feb 2017

IIFW to bring together premium lingerie brands

India Intimate fashion Week (IIFW), dedicated to showcasing the...

Interviews View All

Deepak Jain
Baggout

We are using Facebook and Instagram to promote ourselves

Smith Vaghasia
Sanado India

Online remains the best destination for shopping

C Kamatchisundaram
Voltas

ITME is an occasion not only to receive new leads but also to work on...

Silke Brand-Kirsch
Schlegel und Partner

Silke Brand-Kirsch, executive partner of Schlegel und Partner, a leading...

Marcel Alberts
Eurofibers

Coating at a fibre level is a practice not usually seen in the...

Kerem Durdag
Biovation II LLC

Kerem Durdag, CEO, Biovation II LLC, provides an insight into future...

Robert Brunner
Devereux

Golfwear and menswear brand Devereux is set for greener pastures. Robert...

Tony Ward
Tony Ward

"You have to truly understand what your client wants, know her needs, what ...

Pranav Mishra
Huemn

Designers Pranav Mishra and Shyma Shetty’s Huemn is known for its...

Press Release

Press Release

Letter to Editor

Letter to Editor

RSS Feed

RSS Feed

Submit your press release on


editorial@fibre2fashion.com

Letter To Editor






(Max. 8000 char.)

Search Companies





SEARCH
February 2017

February 2017

Subscribe today and get the latest update on Textiles, Fashion, Apparel and so on.

SUBSCRIBE


Browse Our Archives

GO


eNEWS
Insights
Subscribe today and get the latest News update in your mail box.
Advanced Search