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1,305 Current news about the topic polymers

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A show of force: Novel polymer that toughens up and changes color upon mechanical stress

04-Feb-2021

A fascinating and crucial ability of biological tissue, such as muscle, is self-healing and self-strengthening in response to damage caused by external forces. Most human-made polymers, on the other hand, break irreversibly under enough mechanical stress, which makes them less useful for certain ...

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Degradable sugar-based polymers may store and release useful molecular freight

Options for chemical plastic recycling

25-Jan-2021

Degradable, bio-based polymers offer options for chemical recycling, and they can be a tool to store and release useful molecules. Scientists have developed a class of sugar-based polymers that are degradable through acid hydrolysis. The researchers also integrated “cargo” molecules in the ...

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Shall they go with the flow?

If and how a polymeric solution will flow in a nanoporous material

18-Dec-2020

Printing with an ink-jet printer is part of daily life, but the same technology finds more complex applications in electronics and in protein separation. These applications, considered futuristic only few decades ago, rely on the quality of the printing process which depends on the flow of the ...

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Chemists used crab shells to improve palladium catalysts

A new type of palladium catalysts based on chitin can be reused over 10 times

17-Dec-2020

Chemists from RUDN University synthesized soluble biopolymers based on chitin from crab shells. Together with palladium, they form effective catalysts for organic reactions, and their nanoparticles can be re-used over ten times. Palladium-based catalysts are used to speed up cross-coupling ...

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Precious metal-free silicone curing

Sustainable processes could replace precious metals in silicone crosslinking

03-Dec-2020

Silicones are tried and tested in the private and professional domains. In many applications, however, expensive precious metals are required as catalysts to transform the liquid intermediate products to durable elastic polymers. A research team from the Technical University of Munich (TUM) and ...

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Nano coatings with many functions

Materials scientists synthesize nanoscale gradient copolymers with contradictory properties for the first time

05-Nov-2020

Materials that simultaneously have contrasting properties – for example, they are soft on the one hand and hard on the other, the transition is gradual - could enable completely new applications like gradual anti-reflective lenses. In nature, such merging properties are indeed common, for example ...

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Smart bottle brushes

Neutrons make structural changes in molecular brushes visible: Promising candidates for a variety of applications

02-Nov-2020

They look like microscopic bottle brushes: Polymers with a backbone and tufts of side arms. This molecular design gives them unusual abilities: For example, they can bind active agents and release them again when the temperature changes. With the help of neutrons, a research team from the ...

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Ultraheavy precision polymers

Controlled photoenzymatic RAFT polymerization of nonconjugated polymers

30-Oct-2020

An environmentally friendly and sustainable synthesis of "heavyweight" polymers with very narrow molecular weight distributions is an important concept in modern polymer chemistry. Thanks to a new photoenzymatic process, Chinese researchers have been able to increase the range of possible ...

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Turning streetwear into solar power plants

Ready-to-wear solar cells

23-Oct-2020

Empa researchers succeeded in developing a material that works like a luminescent solar concentrator and can even be applied to textiles. This opens up numerous possibilities for producing energy directly where it is needed, i.e. in the use of everyday electronics. Our hunger for energy is ...

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Bacteria fed on a customized diet produce biodegradable polymers for alternative packaging in the cosmetics industry

Replacing harmful solvents with pressure change technology

06-Oct-2020

Germany generates around 38 kilograms of plastic waste per capita each year. In a joint project with the University of Stuttgart and LCS Life Cycle Simulation, researchers from the Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB and the Fraunhofer Institute for Process ...

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