Preparation of Glycolether Lignin from <i>Sugi</i> (<i>Cryptomeria japonica</i> D. Don) Woodmeal by Acid-Catalyzed Solvolysis and Preparation of Heat-Resistant Polyester from the Glycolether Lignin

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  • ISHII Daisuke
    Department of Chemistry for Life Science and Agriculture, Faculty of Life Sciences, Tokyo University of Agriculture
  • YAMAZAKI Masao
    Oichem LLC
  • IBAYASHI Kenta
    Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University
  • NAKAOKI Takahiko
    Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University
  • HAYASHI Hisao
    Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University

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  • 酸加溶媒分解によるスギ（<i>Cryptomeria japonica</i> D. Don）木粉からのグリコールエーテルリグニンの作製とグリコールエーテルリグニンからの耐熱性ポリエステルの作製
  • Preparation of Glycolether Lignin from Sugi (Cryptomeria japonica D. Don) Woodmeal by Acid-Catalyzed Solvolysis and Preparation of Heat-Resistant Polyester from the Glycolether Lignin

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Abstract

<p>Preparation of glycolether lignin from Sugi (Cryptomeria japonica D. Don) woodmeal by acid-catalyzed solvolysis in 2-phenoxyethanol has been performed. The glycolether lignin had the hydroxyl content of 0.677 mmol/g and average molecular weight of 2.5×103. The glycolether lignin showed good solubility to various common organic solvents, such as methanol, ethanol, acetone, 2-butanone and chloroform. Crosslinked glycolether lignin, obtained by esterification with adipoyl chloride in acetone, showed thermal stability up to 230 °C.</p>

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