Veículo
AzoM (Reino Unido)
Em 2022: 2 notícias
Desde 1995: 6 notícias
Newly Developed Biodegradable Plastic Offers Higher Tensile Strength Than Plastic Made from Petroleum
Publicado em 10 março 2022
The disposal of food packaging is a massive contributor to environmental pollution on a global scale. Over 350 million metric tons of plastic are generated yearly, and plastic forms 85% of the trash discarded in the oceans, according to reports.
Designed for use as food packaging, the material is produced by scientists at São Paulo State University from gelatin, clay, and a nanoemulsion of black pepper essential oil (photos: preparing the mixture (left) and the gelatin-based biofilm. [...]
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Scientists Develop an Environmentally Sustainable Process to Produce Biodegradable Plastic
Publicado em 18 fevereiro 2022Scientists based in Brazil and Portugal have developed an environmentally sustainable process to produce biodegradable plastic using pigment extracted from yeast by "green" solvents. In an article published in the journal Green Chemistry, they show that this biodegradable plastic could in future be used in smart packaging with antioxidant and anti-microbial properties. With similar applications to those of conventional plastics derived from oil, gas and coal, which take [...]ver notícia -
Study Reveals New Class of Atomic-Thin Electride Materials
Publicado em 11 junho 2021An exploratory analysis of the behavior of materials with preferred electric characteristics led to the discovery of a structural phase of 2D materials. Yellow isosurfaces on the left panel indicate electrons localized in-between the C3 trimers. The ionized structure on the right has no trapped electrons, and some of the M atoms have been largely displaced. This displacement of the M atoms again significantly stabilizes the ionized structure. Image Credit: Soungmin Bae and Hannes [...]ver notícia -
Study Determines Charge Buildup and Dynamics in Resonant-Tunneling Diodes
Publicado em 21 abril 2021Diodes are widely used electronic devices that act as one-way switches for current. A well-known example is the LED (light-emitting diode), but there is a special class of diodes designed to make use of the phenomenon known as "quantum tunneling". Called resonant-tunneling diodes (RTDs), they are among the fastest semiconductor devices and are used in countless practical applications, such as high-frequency oscillators in the terahertz band, wave emitters, wave detectors, and logic [...]ver notícia -
Incorporation of Perovskite Likely to be the Distinctive Feature of Next Generation Electronics
Publicado em 15 março 2021Quantum dots are manmade nanoparticles of semiconducting material comprising only a few thousand atoms. Because of the small number of atoms, a quantum dot's properties lie between those of single atoms or molecules and bulk material with a huge number of atoms. By changing the nanoparticles' size and shape, it is possible to fine-tune their electronic and optical properties - how electrons bond and move through the material, and how light is absorbed and emitted by it. Thanks to [...]ver notícia -
New Plastic Film Deactivates the Coronavirus in just 15 Minutes
Publicado em 08 fevereiro 2021A scientific collaboration including the companies Nanox, AplFilm, Braskem and the UFSCar (Brazil) and Jaume I of Castellón (Spain) universities has launched a plastic film with the potential to deactivate 99.99% of the novel coronavirus in just 15 minutes. Named AlpFilm Protect PVC, the new product is already available commercially. The collaboration started 15 years ago between UFSCar and UJI with company Nanox, which had already created a product in 2014 with bactericidal and [...]ver notícia