Imidazolium chloride-Licl melts as efficient solvents for cellulose

Shalu Agarwal, Anwar Hossain, Young Seop Choi, Minserk Cheong, Ho Gyeom Jang, Je Seung Lee

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

1-Alkyl-3-methylimidazolium chloride-LiCl melts were prepared from the reaction of 1-alkyl-3-methylimidazolium chloride ([RMIm]Cl; R=allyl or n-butyl) and lithium chloride, and their ability to dissolve cellulose was evaluated. The solubility of cellulose was greatly increased to 320% when [RMIm]Cl was replaced by [RMIm][LiCl2]. Dissolved cellulose in LiCl/[RMIm]Cl melts was successfully regenerated by adding water and LiCl/[RMIm]Cl melts were easily recovered by removing water. As supported by the computational results, the higher solubility of cellulose in [RMIm][LiCl2] can be ascribed to the increased bond distance between anion and C(2)-H of the imidazolium ring compared with that in [RMIm]Cl, thereby resulting in the increased interaction between [LiCl2]- and the hydroxyl groups of cellulose.

Original languageEnglish
Pages (from-to)3771-3776
Number of pages6
JournalBulletin of the Korean Chemical Society
Volume34
Issue number12
DOIs
Publication statusPublished - 2013 Dec 20

Keywords

  • Cellulose
  • Dihedral angle
  • Dissolution
  • Ionic liquid
  • Lithium chloride

ASJC Scopus subject areas

  • Chemistry(all)

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