イオン液体系混合溶媒を用いて調製したセルロースおよび酢酸セルロースの溶液特性およびフィルム特性

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タイトル別名
  • Solution and Film Properties of Cellulose and Cellulose Acetate Prepared Using Ionic Liquid Mixed Solvent
  • イオン エキタイケイ コンゴウ ヨウバイ オ モチイテ チョウセイ シタ セルロース オヨビ サクサン セルロース ノ ヨウエキ トクセイ オヨビ フィルム トクセイ

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<p>Because of lacking at thermoplasticity in cellulose, it requires solution states for molding processing. A typical example is viscose, which requires the use of a multiple solvent system including toxic. In order to improve the disadvantage, cellulose was dissolved in an ionic liquid mixed solvent and its solution characteristics were evaluated in the present study. Another method for imparting thermoplasticity to cellulose is chemical modification. Thus, an attempt was also made to acetylate cellulose in the ionic liquid mixed cellulose solution. Despite the fact that the solvent contains dimethyl sulfoxide, which causes the Pummerer rearrangement preventing esterification, cellulose acetate with a degree of substitution of 2.7 or higher was successfully prepared. The films were prepared by coagulation of the solution, and the film characteristics were evaluated by measuring their viscoelasticity. It was found that cellulose and cellulose acetate films obtained from the solvent have almost the same viscoelastic properties as commercially available ones. In addition, the solution characteristic in the ionic liquid mixed solvent of the obtained cellulose acetate was examined. </p>

収録刊行物

  • 材料

    材料 69 (6), 465-469, 2020-06-15

    公益社団法人 日本材料学会

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