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Using a novel polymerization process, MIT chemical engineers have created a new two-dimensional polymer that self-assembles into sheets, unlike all other polymers which form one-dimensional chains. Until now, scientists had believed it was impossible to induce polymers to form 2D sheets. —Michael Strano.
Researchers at Uppsala University have developed photocatalytic composite polymer nanoparticles (“polymer dots”) that show promising performance and stability for the production of hydrogen from water and sunlight. These polymer dots are designed to be both environmentally friendly and cost-effective. Photograph: P-Cat.
With its self-healing properties, the PBS coating offers a much more stable performance in terms of capacity compared to a bare anode or one coated with PVDF, a polymer commercially used in lithium-ion batteries. Tejkiran Pindi Jayakumar, who were completing a doctoral course at JAIST at the time, is published in ACS Applied Energy Materials.
In brief, it uses light to transform gooey liquids into complex solid objects in only a matter of minutes. We demonstrated concurrent printing of all points within a three-dimensional object by illuminating a rotating volume of photosensitive material with a dynamically evolving light pattern. We print features as small as 0.3
a privately held company that develops novel catalysts and processes for the cost-advantaged production of chemical products from renewable feedstocks, has produced and shipped to a prospective partner samples of what it believes to be the world’s first 100% bio-based nylon-6,6 polymer. Rennovia, Inc., Earlier post.)
In a paper in the journal Nature Materials , the team presents a plasmonic metal–polymer hybrid nanomaterial concept, in which the polymer coating reduces the apparent activation energy for hydrogen transport into and out of the plasmonic nanoparticles, while deactivation resistance is provided via a tailored tandem polymer membrane.
Researchers at Fudan University have developed a polymer with a metallic backbone that is conductive, thermally stable, and has interesting opto-electronic properties. Polymers with a metal backbone could combine the advantages of both types of material and open routes to materials with novel functionality. Resources Zeng, K.,
In cooperation with project partners from BASF, Munich Technical University, and the University of Hamburg, scientists at Siemens’ global research unit Corporate Technology developed an alternative for the standard polystyrene-based acrylonitrite-butadiene-styrene (ABS) polymer, which is frequently used for consumer products.
Using a novel computational chemistry hybrid approach, scientists from IBM Research have successfully discovered a new class of polymer materials—the first new class of polymers discovered in more than 20 years—that could potentially transform manufacturing and fabrication in the fields of transportation, aerospace, and microelectronics.
million (US$5 million) research project to create a new class of fast rechargeable zinc-polymer batteries for hybrid and small electric vehicle applications. The PolyZion (Fast rechargeable zinc-polymer battery based on ionic liquids) received funding of €2.4 An EU consortium is two years into a 3-year, €3.5 million (US$3.4
Scientists at Lawrence Berkeley National Laboratory (Berkeley Lab) have developed a conductive polymer coating—called HOS-PFM—that could enable longer lasting, more powerful lithium-ion batteries for electric vehicles. At room temperature (20 ˚C), alkyl end-chains on the PFM polymer chain limit the movement of lithium ions.
A team led by Dinglin Jiang at the National Institutes of Natural Sciences in Okazaki (Japan) reports in the journal Angewandte Chemie on the synthesis of co-operative porous frameworks based on aza-fused π(pi)-conjugated microporous polymers (CMPs) for use in supercapacitors. Such materials are thus conducting. —Kou et al.
Audi will introduce new, lightweight suspension springs made of glass fiber-reinforced polymer (GFRP) in an upper mid-size model before the end of the year. The GFRP unit is light green, the fiber strand is thicker than the wire of a steel spring, and it has a slightly larger overall diameter with a lower number of coils.
Researchers from the University of Cambridge, in association with Boeing, have successfully tested a light aircraft powered by a parallel hybrid-electric propulsion system, in which an electric motor and gasoline engine work together to drive the propeller. Hybrid in flight. Click to enlarge. Paul Robertson, project leader.
Key to the design of these new soft, solid-electrolytes was the use of soft polymers of intrinsic microporosity (PIMs), the pores of which were filled with nanosized ceramic particles. The Helms team used X-rays at Berkeley Lab’s Advanced Light Source to create 3D images of the interface between lithium metal and the electrolyte.
PCC 6803 cells holding ethylene forming enzyme (Efe) from Pseudomonas syringae are entrapped within a natural polymer matrix, thus forming the thin-layer biocatalytic structure. 2 ethylene at 1.54% light to ethylene conversion efficiency. It also improves light utilization under low-light conditions and strongly promotes cell fitness.
Analysis by the company has identified both near-term and medium-term solutions for the manufacture of items such as transmission casings using advanced composite materials, but favors modern hybrid materials such as metal and polymer matrix composites (MMCs and PMCs) over conventional carbon composite solutions. —Westall, 2014.
Unlike the simple starch-based glucose sugars in corn and other grains, the sugars in cellulosic biomass are complex polysaccharides that must be extricated from a tough polymer called lignin and then broken down into fermentable glucose, a process called saccharification. —Jerome Fox, lead author.
After successful conversion, we develop nanocomposites by dispersing AFG into a polymer effectively, which have superior mechanical, thermal, and corrosion-resistant properties compared to the bare polymer. The conductive homogeneous mixture is lightly compressed inside a quartz tube between two copper electrodes.
A team of scientists at the University of Cambridge has reported the light-driven photoreforming of cellulose, hemicellulose and lignin to H 2 using semiconducting cadmium sulfide quantum dots in alkaline aqueous solution. CdS is an inexpensive, visible-light-absorbing photocatalyst with a bulk electronic bandgap of around 2.4
Scientists of the Karlsruhe Institute of Technology and Evonik Industries have developed a chemical cross-linking reaction that ensures good short-term healing properties of a polymer material under mild heating. The research results have been published in the journal Advanced Materials.
Yield strength for metals and polymers, tear strength for elastomers, compressive strength for ceramics, and tensile strength for composites.) Ashby plot of strength vs. density for engineering materials. The low-density HEA is indicated with the star. Youssef et al. Click to enlarge.
With this application in mind, we created spirocyclic polymers with N-aryl bonds that demonstrated noninterconnected microporosity in the absence of ladder linkages. The resulting glassy polymer membranes demonstrated nonthermal membrane fractionation of light crude oil through a combination of class- and size-based “sorting” of molecules.
Described in a paper (“Compliant Glass-Polymer Hybrid Single-Ion-Conducting Electrolytes for Lithium Batteries”) to be published this week in Proceedings of the National Academy of Sciences (PNAS), the highly conductive hybrid electrolyte combines the two primary types of solid electrolytes: polymer and glass. earlier post ).
Targeting the plastic industry first, and leveraging the material’s thermoplastic affinity to polymers, they company developed several commercial grades of UBQ material. UBQ GHG Neutralizer additives enable processors to directly compensate cO 2 -equivalent emissions (GHG) generated by plastic polymers. Polymers typically emit 1.9
The German and Austrian project consortium aims to develop new materials, printing methodologies and post-processing technologies for durable Stereolithography (SLA) products using Digital Light Processing (DLP) with a focus on automotive applications.
Solvay is taking a “leadership role” in the development of the Polimotor 2 all-plastic automotive engine to be tested in a race car next year, demonstrating the company’s advanced specialty polymer technologies in light-weighting through metal replacement. liter Duratec engine.
a Canadian graphene R&D, investment and technology licensing company ( earlier post ) introduced its GPURE Graphene Polymer nano-porous membrane intended for next generation Li-Ion battery applications. GPURE (F)- May be applied as a graphene varnish for wood surfaces to protect against moisture, UV light and high temperatures.
A team at Chalmers University (Sweden) has tested blends of OME 3-5 , HVO and RME in a light- and heavy-duty CI engine. Performance and emissions were compared to the reference fuels fossil diesel and HVO in a single-cylinder light duty and heavy duty compression ignition engine at different loads. Preuß et al. 2021.121275.
The ultra high-strength outer shell comprises two layers: an inner layer of carbon fiber-reinforced polymer (CFRP) and an outer layer of glass fiber-reinforced polymer (GFRP). The inner layer is a gas-tight polyamide vessel. The GFRP layer also has a safety function: It turns a milky white if damaged.
Steel/ferrous materials account for around half of the vehicle weight (51.4%) in the new B-Class Electric Drive, followed by polymer materials with around 17% and light alloys (12.8%) as the third-largest group. The remaining materials—process polymers and electronics—contribute about 1.5% and 5% respectively.
Using particulate methane monooxygenase (pMMO), the researchers created a biocatalytic polymer material that converts methane to methanol. The enzymes retain up to 100% activity in the polymer construct. Membrane-bound pMMO is mixed with PEGDA 575 and photoinitiator and exposed to ultraviolet light to crosslink the material. (b)
Renewable chemicals company Avantium has acquired the assets of Liquid Light. Liquid Light has developed proprietary process technology to make major chemicals from low-cost, globally-abundant carbon dioxide. The integration of the Liquid Light assets into Avantium is complete and effective immediately.
To overcome this mechanism, they introduced amphiphilic polymers to modify the carbon surface. In light of this new understanding, we modified the interface between the carbon and sulfur with amphiphilic polymers and showed a much-improved cycling performance of the modified electrode. —Zheng et al.
With its innovative technology, Transform Materials breaks down methane and other similar light hydrocarbon gases without oxygen, recombining the resulting fragments into two high-value end products, acetylene and hydrogen. But methane is extremely inert in an oxygen-free environment and resists chemical reactions.
The new polymer-coated high-performance bearings can be applied to both light and heavy-duty engines, and are particularly effective in hybrid and start/stop applications that place additional demands on bearings through frequent re-starting. —Gian Maria Olivetti, Chief Technology Officer, Federal-Mogul Powertrain.
As part of the work, a novel graphene-based polymer material will be investigated, modeled, and designed to enhance both vehicle and occupant safety while remaining very light. However, due to the trade-off between light vehicles and safety standards, new directions need to be adopted to overcome safety issues.
The new system mimics a natural chloroplast to convert carbon dioxide in water into methane, very efficiently using light. It mimics the structure of a purple bacteria’s light-harvesting chromatophores (i.e. A paper on this team’s latest work was published in Nature Catalysis. over 24 hours.
Organic materials for batteries have received much attention because of their beneficial properties such as light weight, flexibility and availability from easily accessible natural sources. To prepare the cathodes, they mixed polymer-bound PYT (PPYT) with acetylene black and poly(vinylidene fluoride (PVDF) as a binder.
The Precourt Institute for Energy, the umbrella organization for energy research and education at Stanford, will fund the following four studies: Nanostructured Polymers for High-Performance Batteries. This project explores the use of specially designed nanostructured polymers to make high-energy, low-cost, flexible and stretchable batteries.
Hyundai Motor is introducing a hydrogen fuel cell concept version of its H350 light commercial van at the 2016 IAA Commercial Vehicle Show in Hannover. The powertrain study shows the potential for the company’s advanced hydrogen fuel cell technology in the light commercial vehicle (LCV) segment.
With oxygen in the air acting as an oxidant, the catalyst species produces this effect even under dark conditions at room temperature without requiring light irradiation, as is usually the case with oxidation. They inhibit photodegradation reactions (e.g., cracking, embrittlement, fading) over long periods of time.
The new polymer binder allows a doubling in capacity compared to a conventional lithium-sulfur battery, even after more than 100 charge cycles at high current densities. Without this information, rational design principles for polymer binders remain obscure. Click to enlarge. —Li et al. The new binder goes a step further.
LEDs are used for powerful lighting: the front light is integrated into the handlebar, the rear light into the seat. The frame and the swinging arm that holds the back wheel are made of carbon fiber-reinforced polymer (CFRP). in) of travel. The frame features a low center of gravity and a compact overall volume.
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