Russian researchers use biomass materials to develop new recyclable 3D printing polymers
when it comes to 3D printing materials, you won't encounter a more popular choice than plastics. There are a variety of plastics to choose from, and at the same time, it is also the cheapest 3D printing materials. However, there are also some problems with plastics. Landfills around the world are the most headache for plastic treatment. Materials are depleting fossil raw materials and forming carbon dioxide during production and combustion. A research team at the Russian Academy of Sciences (RAS) in Moscow has developed a 3D printable polymer made entirely from biomass to solve the problems caused by plastics by computing compounds
3d printing process is usually more suitable for the environment than other forms of manufacturing, but plastic waste is still a worldwide problem. Plastic is composed of a series of synthetic or semi synthetic plastic organic materials, and many efforts have been made to use recycled plastic for 3D printed objects, such as artificial limbs, leaves forming floating Christmas trees, beehives and supplies for astronauts in space
3d printing polymer is also the driving force to expand the small panel control system. The complex has its own shortcomings, such as being eroded by organic solvents, shrinking when heated, and poor adhesion with printing paper, all of which may lead to printing errors. However, RAS researchers are working with Prof. Dr. Valentine P. ananikov to develop not only sustainable material processes, but also eliminate these problems
they developed a polymer called polyethylene-2,5-furan dicarboxylate (PEF), which can be used for 3D printing of high-quality objects with recyclability and high solvent resistance at low cost. The researchers made a detailed introduction in a paper in the magazine Angewandte Chemie. Co authors include Dr. Fedor cherov, Dr. Evgeny g. gordeev, Dr. Alexey S. Kashin, and Professor ananikov
Abstract read "biomass derived polyethylene-2,5-furan dicarboxylate (PEF) 1 published article reported that lumbar artificial intervertebral disc) has been used for melt deposition modeling (FDM) 3D printing. A complete cycle from cellulose to the printed object has been carried out. In this study, the load corresponding to 3D printing at this time is the yield load. The PEF object of PS shows more than the commonly available materials [acrylonitrile butadiene styrene (ABS), polylactic acid] (PLA), ethylene glycol modified polyethylene terephthalate (PETG)] printed objects have higher chemical resistance
the PEF polymer studied has shown the key advantages of 3D printing: optimal adhesion, thermoplastic, lack of delamination and low thermal shrinkage. The high thermal stability of PEF and the relatively low temperature required for extrusion are optimal for recycling printed objects and minimizing waste. Several consecutive cycles of 3D printing and recycling were successfully displayed. The proposed method of extending 3D printing to carbon neutral materials has opened up a new direction in the field of sustainable development
the researchers melted the polymer powder in an oven to form filaments, which were then hot stretched into a material with a diameter of 2.85 mm. Then, they used Autodesk 123d design to draw the digital model and successfully print it on ultimaker 2, because the feeder of a specific 3D printer is farther away from the print head and allows smaller sections of experimental material not to directly contact mechanical parts. 3D printed objects have smooth, high-quality surfaces, and layers are "firmly bonded to each other"
then test PEF objects and objects printed with PETG, PLA and ABS, and prove that PEF objects are more resistant to aggressive solvents symmetrical to dichloromethane
pef material has high thermal stability, which means that the test object of 3D printing can be melted, made into filaments again, and printed again. PEF also has greater polarity than other materials. The research team believes that this structural diversity means that materials will have new applications
in addition, according to researchers' computer calculations, the building blocks that make up PEF may actually have nonlinear fragments, which form spiral distortions and provide "access to new types of geometry"