A drop of water self-heals a multiphase polymer derived from the genetic code of squid ring teeth, which may someday extend the life of medical implants, fiber-optic cables and other hard to repair in place objects, according to an international team of researchers.
“What’s unique about this plastic is the ability to stick itself back together with a drop of water,” said Melik Demirel, professor of engineering science and mechanics, Penn State. “There are other materials that are self healing, but not with water.”
Demirel and his team looked at the ring teeth of squid collected around the world — in the Mediterranean, Atlantic, near Hawaii, Argentina and the Sea of Japan — and found that proteins with self-healing properties are ubiquitous. However, as they note in a recent issue of Scientific Reports, “the yield of this proteinaceous material from natural sources is low (about 1 gram of squid ring teeth protein from 5 kilograms of squid) and the composition of native material varies between squid species.”
So as not to deplete squid populations, and to have a uniform material, the researchers used biotechnology to create the proteins in bacteria. The polymer can then either be molded using heat or cast by solvent evaporation.
The two-part material is a copolymer consisting of an amorphous segment that is soft and a more structured molecular architecture. The structured portion consists of strands of amino acids connected by hydrogen bonds to form a twisted and/or pleated sheet. This part also provides strength for the polymer, but the amorphous segment provides the self-healing.
The researchers created a dog-bone shaped sample of the polymer and then cut it in half. Using warm water at about 113 degrees Fahrenheit — slightly warmer than body temperature — and a slight amount of pressure with a metal tool, the two halves reunited to reform the dog-bone shape. Strength tests showed that the material after healing was as strong as when originally created.
“If one of the fiber-optic cables under the ocean breaks, the only way to fix it is to replace it,” said Demirel. “With this material, it would be possible to heal the cable and go on with operation, saving time and money.
“Maybe someday we could apply this approach to healing of wounds or other applications,” he said. “It would be interesting in the long run to see if we could promote wound healing this way so that is where I’m going to focus now.”
Read more: Water heals a bioplastic
The Latest on: Bioplastic
[google_news title=”” keyword=”Bioplastic” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Bioplastic
- Bioplastic Market Global Outlook 2023-2031: Expecting Significant Industry Growthon September 25, 2023 at 6:27 am
Global Bioplastic Market is expected to increase during the forecasted period due to the rising number of Bioplastic. In 2022, the industry is growing at a steady rate and with the rising adoption ...
- SKC to build bioplastic materials plant in Vietnamon September 24, 2023 at 5:40 pm
SKC Co., a South Korean materials maker, said Monday it plans to build a manufacturing plant in Vietnam to produce materials for biodegradable plastics, as it pushes to expand the eco-friendly ...
- Bioplastics News Streamon September 24, 2023 at 5:00 pm
That’s the idea behind this new and regularly updated curated stream of Tweets drawn from X, formerly known as Twitter, dedicated to bioplastic news, research, and innovations. To keep the stream ...
- Now Hear This: The World’s First Bioplastic Vinyl Recordon September 24, 2023 at 5:00 pm
You can find out more about this movement at musicdeclares.net. The bioplastic vinyl record from Evolution Music does check the “remove fossil fuels” box. Not sure about biodiversity or social justice ...
- Bioplastics makers call for state measureson September 19, 2023 at 11:10 pm
Thailand's growing bioplastic manufacturing requires innovative measures from the Industry Ministry to boost investment from foreign companies, part of efforts to make the country a bio hub of Asean ...
- New highly heat-resistant bioplastic can be used in car partson September 18, 2023 at 5:00 pm
But this new bioplastic is more heat tolerant than aluminum and magnesium, so it can be combined with those metals to make car parts and building materials, according to the scientists.
- Bioplastic's Algae Content Raised to 51% for Injection Moldingon September 12, 2023 at 5:00 pm
Bioplastic manufacturing leader Cereplast has increased the post-industrial biomatter content of its algae-based resin to 51 percent. Biopropylene A150D is the company's second injection-molding grade ...
- Bioplastic records could help decarbonize the music sceneon September 11, 2023 at 5:48 pm
Video Module Bioplastic records could help decarbonize the music scene Posted The sweet sound of a sugar-based alternative to vinyl could be about to revolutionize recorded music by helping to ...
- Global Bioplastic Market Size [2023-2030] | Market Cap Reached at USD 7381.6 Million Recentlyon August 10, 2023 at 8:43 am
Pre-Post Covid-19 Pandemic and Russia-Ukraine War Impact Covered Global "Bioplastic Market [2023-2030] research report provides an outline of the business with key insights, applications ...
via Bing News