3D printing with a biobased polymer for CO2-neutral manufacturing
In our modern world, eliminating plastics is inconceivable. Unfortunately, they do have disadvantages, including the formation of CO2 in both production and combustion, depletion of fossil feedstocks, and growth of landfills. In the journal Angewandte Chemie, Russian researchers introduce a new way forward, a polymer made entirely from biomass that can easily and inexpensively be used in 3D printing. Objects produced in this way are of high quality, easily recyclable, and highly solvent-resistant.
Conventional “subtractive” processes involve cutting, sawing, turning, or milling, which results in a great deal of wasted material. In contrast, 3D printing processes are, in principle, waste-free, because they are “additive”: three-dimensional objects are produced in a layer-by-layer application of material. The most common technique is called fused deposition modeling (FDM). In this process, the raw material is squirted through a hot nozzle onto a mobile base and thereby liquefied (extrusion). The printer head produces the programmed form like in a conventional two-dimensional printing process, releasing small amounts of the polymer instead of ink. This is repeated for layer after layer until the desired three-dimensional object is complete. Yet, the polymers used until now have a number of disadvantages that limit their use. Some of the polymers are attacked by organic solvents. Those that withstand the solvents, on the other hand, adhere poorly and shrink on heating, allowing their layers to come apart and causing errors in the printing process.
Researchers working with Valentine P. Ananikov at the Russian Academy of Sciences (Moscow) have now solved these problems while also developing a sustainable process: 3D printing with polyethylene-2,5-furandicarboxylate (PEF), a polymer they make from cellulose.
The team was able to use a commercially available 3D printer under standard settings to successfully make objects. The individual layers of the printed objects were firmly bound to each other and the surface was smooth and of high quality. Tests demonstrated that the objects were resistant to dichloromethane, one of the most aggressive solvents. Thanks to the high thermal stability of the PEF, the printed objects could be repeatedly melted, made into filaments, and printed again.
Computer calculations indicate that the individual building blocks of PEF may contain non-linear fragments and form a spiral twist, which gives an access to new types of geometry. Another important feature is a greater polarity of PEF. The researchers believe that structural diversity opens new superior applications of PEF.
Learn more: From Cellulose to 3D Objects
The Latest on: CO2 neutral manufacturing
- Why China’s Methane-Spewing Farms Are a Hidden Climate Riskon November 26, 2020 at 7:08 pm
Agriculture has long been an overlooked source of greenhouse gases. Now, with China upping its climate pledges, researchers are looking for ways to bring down emissions.
- New report questions government's 2030 banon November 26, 2020 at 4:04 pm
With backing from manufacturers, the document proposes different methods to ensure transport becomes carbon-neutral ...
- Audi is En-Route to CO2 Neutralityon November 25, 2020 at 3:21 am
Following the implementation of Audi ’s environmental program billed “Mission:Zero” back in May, the company is looking to make further strides into reducing their environmental footprint. This stride ...
- WEROCK presents CO2-neutral industrial notebookon November 24, 2020 at 5:56 am
WEROCK Technologies GmbH innovative manufacturer of industrial IT and communication solutions releases the X550 the first rugged notebook from the Rockbook series The extremely robust notebook is ...
- Audi on the road toward CO2-neutral production siteson November 24, 2020 at 12:55 am
Audi produced about 1.8 million cars* at its locations around the globe last year. Accordingly, making product manufacturing as sustainable as possible is an ambitious aspiration. “A major proportion ...
- Audi to make all car plants carbon neutral by 2025on November 23, 2020 at 1:34 am
Audi has announced its intentions to make all of its vehicle production plants carbon neutral by 2025. Billed ‘Mission:Zero’, the manufacturer is implementing a range of policies that will enable its ...
- Corona will not stop us, all five plants to be carbon neutral by 2025 – Audion November 23, 2020 at 1:02 am
Audi’s plans to reach carbon neutrality by 2025 is on track. Despite the impact from the coronavirus pandemic, the remaining three manufacturing facilities around the world will become carbon neutral ...
- Biden Will Normalize Chinese Relations And Collaborate On Climate And Tradeon November 22, 2020 at 9:30 am
When Joe Biden takes the oath of office in January, he will work to collaborate with China on addressing climate change, growth the green-tech sector and expanding trade relations.
- EU Climate Goals Are Hard To Reach Without Carbon Captureon November 20, 2020 at 1:42 pm
The European Union's failure to fully embrace blue fuels, produced using carbon capture, utilization and storage technologies, may hinder the region's pursuit of its aggressive decarbonization goals, ...
- China’s vow to cut carbon emissions clashes with plans to expand coal power plants, report sayson November 19, 2020 at 8:19 pm
China's pledge to become carbon neutral by 2060 implies that plans to expand the nation's coal power cannot proceed, two environmental research groups contended on Friday. A report by the Draworld ...
via Google News and Bing News