The 21st Century Paper Using Cellulose Nanofibers

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  • 21世紀の紙 ―セルロースナノファイバー低熱膨張性透明材料―
  • 21セイキ ノ カミ セルロースナノファイバー テイネツ ボウチョウセイ トウメイ ザイリョウ

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Abstract

Plant cell walls with a diameter of 20-50 micro meters are called “cellulose fibers”. The micro-sized cellulose fibers have been used in daily life, such as in paper and clothes. We cannot see through ordinary paper because it’s constituent micrometer sized cellulose fibers and large cavities scatter light, which makes paper opaque. Now, we have developed transparent paper. Using cellulose—as in normal paper—and downsizing the fibers using a simple processing technique, they produced ‘transparent paper’ which, unlike many transparent plastics, does not expand significantly on heating. The transparent nanofiber paper could be a perfect match as substrates for continuous roll-to-roll processing in the future production of electronic devices such as flexible displays, solar cells, e-papers and a myriad of new flexible circuit technologies, and could replace the costly conventional batch processes based on glass substrates currently used. We project that it will also replace conventional paper as an advanced information medium that can still be produced using traditional paper-making equipment that is used in production today.

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