イオン液体系混合溶媒を用いて調製したセルロースフィルムおよび繊維の結晶性

Translated title of the contribution: Crystalline Investigations of Cellulose Films and Fibers Prepared Using Ionic Liquid Mixed Solvent

Daisuke Tatsumi, Yui Yokouchi, Hiroki Tanaka, Ippei Iwata

Research output: Contribution to journalArticlepeer-review

Abstract

Cellulose films and fibers were prepared by using an ionic liquid solvent (Tetrabutylammonium acetate/Dimethyl sulfoxide). The characteristics of the films and the fibers were evaluated mainly from the viewpoint of crystallinity. The crystallinity of the films prepared with water as a coagulation solvent showed the highest value, whereas it decreased when other organic solvents were added to the coagulation bath. The diffraction intensity from the (1 1̅ that is a so-called hydrophilic plane of cellulose II crystal, of the water-coagulated film was remarkably high in the X-0) plane, ray diffraction profiles. It suggested that the surface characteristics of the film can be changed by changing the coagulation solvent. The crystallinity of the films was also affected by the machine speed of film formation and it showed the highest value when the speed was 50 m/min. For the fiber sample, the crystallinity of the obtained fiber increased with the draw ratio (up to 3 times). It also increased with the cellulose concentration of the dope. The cellulose content of the raw material affected the crystallinity and the strength of the obtained fibers. These results can be a guideline for molding films and fibers from cellulosic raw materials through ionic liquids.

Translated title of the contributionCrystalline Investigations of Cellulose Films and Fibers Prepared Using Ionic Liquid Mixed Solvent
Original languageJapanese
Pages (from-to)579-584
Number of pages6
JournalZairyo/Journal of the Society of Materials Science, Japan
Volume71
Issue number7
DOIs
Publication statusPublished - 2022

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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