忍者ブログ
Automotive Exterior Injection Plastic Part Molding
[5]  [4]  [3]  [2]  [1
×

[PR]上記の広告は3ヶ月以上新規記事投稿のないブログに表示されています。新しい記事を書く事で広告が消えます。

About 400,000 tons are produced annually for use in resins, solvents and other products. The study was published China OEM Plastic Injection Molding Parts manufacturers in the journal Nature.The new technology could provide a low-carbon alternative to plastic bottles and other items currently made from petroleum, researchers said. "Our goal is to replace petroleum-derived products with plastic made from carbon dioxide (CO2)," said Matthew Kanan, an assistant professor at Stanford University.The new method may dramatically lower the carbon footprints of the plastics industry. The next step, transforming FDCA into PEF plastic, is a straightforward process, Kanan said. But growing crops for industry requires lots of land, energy, fertiliser and water."If you could do that without using a lot of non-renewable energy, you could dramatically lower the carbon footprint of the plastics industry," said Kanan. PEF is made from ethylene glycol and a compound called 2-5-Furandicarboxylic acid (FDCA). The researchers have been experimenting with furfural, a compound made from agricultural waste that has been widely used for decades. Researchers solved the problem by using carbonate. Manufacturing PET produces significant amounts of CO2, a greenhouse gas that contributes to global warming."It would be much better to make FDCA from inedible biomass, like grasses or waste material left over after harvest," Kanan said.Researchers, including graduate student Aanindeeta Banerjee, focused on an alternative to PET called polyethylene furandicarboxylate (PEF). One approach is to convert fructose from corn syrup into FDCA. Washington: Scientists, including one of Indian origin, have discovered a new way to make plastic from carbon dioxide and plant materials such as agricultural waste and grasses, that may dramatically lower the carbon footprints of the plastics industry."PEF is an attractive replacement for PET, because FDCA can be sourced from biomass instead of petroleum," Kanan said. Despite the many desirable attributes of PEF, the plastics industry has yet to find a low-cost way to manufacture it at scale.After five hours, 89 per cent of the molten-salt mixture had been converted to FDCA, researchers said.

The bottleneck has been figuring out a commercially viable and sustainable way to produce FDCA. "The use of fossil-fuel feedstocks, combined with the energy required to manufacture PET, generates more than four tons of CO2 for every ton of PET that's produced," Kanan said. Many plastic products are made from a polymer called polyethylene terephthalate (PET), also known as polyester. But making FDCA from furfural and CO2 typically requires hazardous chemicals that are expensive and energy-intensive to make.PET is derived from refined petroleum and natural gas. Worldwide, about 50 million tonnes of PET are produced each year for items such as fabrics, electronics, recyclable beverage containers and personal-care products. They combined carbonate with CO2 and furoic acid, a derivative of furfural and heated the mixture to about 200 degrees Celsius to form a molten salt
PR
この記事にコメントする
お名前
タイトル
文字色
メールアドレス
URL
コメント
パスワード   Vodafone絵文字 i-mode絵文字 Ezweb絵文字
プロフィール
HN:
No Name Ninja
性別:
非公開

ILLUSTRATION by まんべくん

忍者ブログ [PR]