Ionic liquid induces flexibility and thermoplasticity in cellulose film

Muhammad Abdul Haq, Yasuhiro Habu, Kazuya Yamamoto, Akihiko Takada, Jun ichi Kadokawa

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


It is still challenging to melt-process cellulose. In this paper, we proposed a method for the formation of thermally processable flexible cellulose films via gelation from its solution in ionic liquid (1-butyl-3-methylimidazolium chloride; BMIMCl). Cotton, as a source of cellulose, was dissolved (5 wt%) in BMIMCl and subsequently placed in different amounts of water. The obtained ion gels were dried at 60 °C for 24 h; during drying process, water was removed while BMIMCl was retained. It was found that the amount of retained BMIMCl had a critical role in determining the mechanical properties of the films. It was suspected that the processing conditions altered the degree of crystallinity of cellulose in the films as evidenced by X-ray diffraction measurement. The ionic liquid, i.e., BMIMCl induced the plasticity into the films, so that thermal processability to different shapes became possible.

Original languageEnglish
Article number115058
JournalCarbohydrate Polymers
Publication statusPublished - Nov 1 2019

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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