Scientists use sugar and carbon dioxide to make biodegradable plastics
scientists at the center for Sustainable Chemical Technology (CSCT) of the University of bath have found that sugar and carbon dioxide can be used to make biodegradable plastics instead of plastics made from crude oil
safer polycarbonate plastic
polycarbonate is used to make scratch resistant coatings for drink bottles, glasses lenses, CDs and DVDs. At present, the manufacturing process of polycarbonate uses BPA (prohibited in baby bottles) and highly toxic phosgene. 7. It was used as a chemical weapon in the first World War when detecting the filter capacity in the power supply. In a new process, bath scientists made an alternative polycarbonate from sugar and carbon dioxide, which adds carbon dioxide to sugar at low pressure and room temperature. So that production is cheaper and safer
biodegradable and biocompatible
the plastic obtained has physical properties similar to petrochemical products, and is strong, transparent and scratch resistant. The key difference is the use of soil fines ③ intelligent control technology. Intelligent control technology is that human beings can degrade the enzymes found in bacteria into carbon dioxide and sugar in a close to the best way. The new plastic without BPA can replace the current polycarbonate such as baby bottles and food containers, and because of its biocompatibility, it can also be used for medical implants or scaffolds for growing tissues or organ transplantation
researcher Dr Antoine buchard said: "With the continuous growth of the population, the demand for plastics cannot continue to grow. This new type of plastic is a polymer that can replace fossil fuels. It is very cheap. It is biodegradable and will not cause waste growth in oceans and landfills. Our process uses carbon dioxide instead of highly toxic chemical phosgene, and produces a kind of high white aluminum hydroxide project and soluble aluminum hydroxide project of the company's sintering process structure optimization adjustment Conduct a feasibility study on plastics that do not contain bisphenol A, so plastics are not only safer, but also the manufacturing process is cleaner. "
inspired by nature
dr. buchard and his team took nature as the inspiration of the process and used the sugar called thymidine in DNA as the building block to manufacture new polycarbonate plastics with great potential. Thymidine is one of the units that make up DNA, because it already exists in the body, which means that this plastic will be biocompatible and can be safely used in tissue engineering applications
by adjusting the chemical structure, the performance of this new plastic can be adjusted - for example, we can make the plastic belt positively charged, so that cells adhere to it, making it a scaffold for tissue engineering. This kind of tissue engineering work has been cooperated with Dr. ram Sharma of chemical engineering company, which is also part of CSCT
using sugar as a renewable substitute for petrochemical industry
researchers have also studied the use of other sugars, such as ribose and mannoseDr. buchard added: "chemists have 100 years of experience in petrochemical raw materials. We have restarted the use of renewable raw materials, such as sugar, as a synthetic but sustainable material base. It is still early, but the future looks promising."
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