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Polymer


— Science

2D self-assembling semiconductor could beat out graphene

Graphene may be talked about as the future wonder material (and for that matter, the present one), but it has one critical deficiency. It lacks a natural bandgap, the physical trait that puts the “semi” in “semiconductor," so it has to be doped to become effective. Enter Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2 ... well, you can refer to it as a metal-organic graphene analogue for now. In addition to having a natural band gap, it’s able to self-assemble and represents a whole family of compounds that’s exciting to researchers for its novel properties. Read More
— Science

Color-changing film could revolutionize product development

Whether you're manufacturing cars, phones, sports equipment or pretty much anything else, a key part of the design process involves measuring the amount of mechanical stress experienced by different parts of the product. Thanks to research being conducted at the University of California, Riverside, doing so may soon be much easier. Scientists there have created a film that changes color when subjected to pressure, making it easy to see where objects coated with the film may need reinforcement. Read More
— Science

Self-healing polymer restores itself in minutes

Researchers at Germany's Karlsruhe Institute of Technology (KIT) have developed a self-healing polymer that can mend itself and fully restore its mechanical properties in just a few minutes when heated at low temperatures. The material could be used to create self-repairing sealants, scratch-resistant paints, and more reliable fiber-reinforced plastic components. Read More
— Electronics

Creating materials to enable "transient electronics" that dissolve on command

The advantages of durable, long-lasting electronics are well established and, indeed, desirable in electronic devices large and small. But in what scenario would you want a device to dissolve away leaving no trace? The truth is, from military to medicine, "transient electronics" has a great many potential applications. The latest research team to shift its focus to this emerging field is a group from Iowa State University, which is developing materials that can melt away when remotely triggered. Read More
— Electronics

New electrolyte could mean an end to spontaneously combusting lithium batteries

Last year, lithium-ion battery fires became a hot topic, pardon the inescapable pun, with both a Tesla automobile and the Boeing 787 Dreamliner succumbing to fires. In cross-disciplinary research at the University of North Carolina (UNC), a compound being studied to prevent marine life from sticking to ships may also be the solvent (and the solution) to keep lithium ion batteries from catching alight when they overheat. Read More

Scientists create an inexpensive self-healing polymer

Stretchy, self-healing paints and other coatings recently took a step closer to common use, thanks to research being conducted at the University of Illinois. Scientists there have used "off-the-shelf" components to create a polymer that melds back together after being cut in half, without the addition of catalysts or other chemicals. Read More
— Mobile Technology Review

Review: Rhino Shield impact-resistant smartphone screen film

It was just a month ago that we reported on Evolutive Labs' Rhino Shield, a 6-layer transparent polymer film designed to protect smartphone screens. Not only is it said to ward off scratches and fingerprints, but it's also reportedly five times more impact-resistant than Gorilla Glass 2. Evolutive recently sent me a testing kit, so I could see first-hand just how tough it is – without endangering my smartphone in the process. Here's how things turned out ... Read More
— Science

New polymer spontaneously self-heals at room temperature

A team of scientists at the CIDETEC Centre for Electrochemical Technologies have successfully created the first self-healing polymer that can heal by itself at room temperature, without the need for external catalysts. The material could be used as an industrial adhesive or to replace similar compounds in cars, houses and electrical components to make them more fault-tolerant. Read More
— Environment

Metabolix engineers plants to make cheaper, cleaner bioplastic

Petroleum-based plastic may be fantastic, but due to the durability that makes the material so popular it may take hundreds of years to break down. Plastic made from renewable biomass, known as bioplastic, is a biodegradable alternative to fossil fuel versions. A company called Metabolix, based in Cambridge (MA), has been working on a technology to genetically engineer plants such as switchgrass to create a biodegradable polymer that can be extracted directly from the plant. Read More
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