They are in the news once again. (Here is a free access summary.) I have had time to read the article just yet, but this research seems to be taking a slightly different tack, namely using two different sizes of polymers which favorably interact through pi-pi bonds. In essence, one is plasticizing the other.
I've mentioned this category of materials in the past(1 and 2) and have always been underwhelmed. I don't see this being much different.
"Heat and heal" is a common characteristic of most thermoplastics, as heating allows for flow - interpenetration of the two surfaces. HDPE pipe is joined like that, potato chip bags are sealed like that... It's not wonderful new technology.
Everything flows, but only the macromolecules are worth the time.
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