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132 Current news about the topic monomersrss
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New strategy to separate molecules
In our daily lives, the purpose and function of an item is defined by either its material, e.g. a rain jacket is fabricated of water-proof material, or its shape, e.g. a wheel is round to enable a rolling motion. What is the impact of the two factors on the nanoscale? The impact of material, ...
Next-generation plastic can be recycled again and again into new materials of any color, shape, or form
Light yet sturdy, plastic is great - until you no longer need it. Because plastics contain various additives, like dyes, fillers, or flame retardants, very few plastics can be recycled without loss in performance or aesthetics. Even the most recyclable plastic, PET - or poly(ethylene ...
Effort to build bottom-up chiral polymers with unique functions
As below, so above. That seems to be an operating principle for molecules that start with a basic chirality - or "handed-ness" -- and pass it on as they combine into larger structures. An international team that included Rice University materials scientist Edwin Thomas pried a new, fundamental ...
Plastic waste could be turned into clean fuels, other products
The United Nations estimates that more than 8 million tons of plastics flow into the oceans each year. A new chemical conversion process could transform the world's polyolefin waste, a form of plastic, into useful products, such as clean fuels and other items. "Our strategy is to create a driving ...
A transparent and thermally stable polyamide – 100 percent biobased
The natural substance 3-carene is a component of turpentine oil, a waste stream of the production of cellulose from wood. Up to now, this by-product has been incinerated for the most part. Fraunhofer researchers are using new catalytic processes to convert 3-carene into building blocks for ...
Superflexible aerogels are highly efficient absorbents, thermal insulators, and pressure sensors
Airy, Airier, Aerogel. Until now, brittleness has limited the practical application of these delicate solids, which consist almost entirely of air-filled pores. This may now change: Japanese researchers have now introduced extremely elastic aerogels that are easy to process and can be produced at ...
Efficient chain transfer for 3D-printing of tough photopolymers
An ever-growing number of coatings, including varnishes and printing inks, as well as tooth fillings, are cured with light. Yet, homogenous, tailored, polymer networks cannot be produced, and the materials tend to be brittle, which limits the use of photopolymers in applications like 3D printing, ...
Properties of recyclable plastics can be defined by the wavelength
A research team from Berlin has developed a novel catalyst system, which enables the regulation of multiple polymerization processes to produce biodegradable plastics solely by illumination with light of different colors. The properties of a polymeric material are highly dependent on factors, ...
There's a good chance you've touched something made out of the polyolefin polymer today. It's often used in polyethylene products like plastic bags or polypropylene products like diapers. As useful as polyolefins are in society, they continue to multiply as trash in the environment. Scientists ...
Researchers have developed a family of synthetic polymers that can be repeatedly recycled, an important feat because current efforts to recycle plastic are so limited. Globally, the production of plastic has increased to the point where output is expected to exceed 500 million metric tons by ...