Self-Healing Polymer Can Heal Scratches at Low Temperatures

Apr-14-14 Researchers have developed a self-healing polymer able to mend itself quickly and repeatedly at low temperatures.

Previous versions of self-healing polymers have required either a network of embedded capsules containing the healing agent or needed to be subjected to high temperatures to active their healing properties. The new polymer, in contrast, is made up of a "switchable network" of specialized fibers or molecules that have been crosslinked by a reversible chemical reaction. The network can be broken down into its base components and then reassemble when exposed to heat, light or a chemical substance.

The method can be applied to a number of plastics, and could also have applications in adhesives, composite materials, rapid prototyping and scratch-resistant paint.

Image: Jason Pearce/Flickr

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[GIZMAG.COM]

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