Dissolution enthalpies of cellulose in ionic liquids

H. Parviainen, A. Parviainen, T. Virtanen, I. Kilpeläinen, P. Ahvenainen, R. Serimaa, Stina Grönqvist, T. Maloney, S.L. Maunu (Corresponding Author)

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Abstract

In this work, interactions between cellulose and ionic liquids were studied calorimetrically and by optical microscopy. Two novel ionic liquids (1,5-Diazabicyclo[4.3.0]non-5-enium propionate and N-methyl-1,5-diazabicyclo[4. 3.0]non-5-enium dimethyl phosphate) and 1-ethyl-3-methylimidazolium acetate-water mixtures were used as solvents. Optical microscopy served in finding the extent of dissolution and identifying the dissolution pattern of the cellulose sample. Calorimetric studies identified a peak relating to dissolution of cellulose in solvent. The transition did, however, not indicate complete dissolution, but rather dissolution inside fibre or fibrils. This method was used to study differences between four cellulose samples with different pretreatment or origins.
Original languageEnglish
Pages (from-to)67-76
JournalCarbohydrate Polymers
Volume113
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

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Keywords

  • cellulose
  • ionic liquids
  • fibre dissolution
  • differential scanning calorimetry

Cite this

Parviainen, H., Parviainen, A., Virtanen, T., Kilpeläinen, I., Ahvenainen, P., Serimaa, R., Grönqvist, S., Maloney, T., & Maunu, S. L. (2014). Dissolution enthalpies of cellulose in ionic liquids. Carbohydrate Polymers, 113, 67-76. https://doi.org/10.1016/j.carbpol.2014.07.001