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)

    Research output: Contribution to journalArticleScientificpeer-review

    22 Citations (Scopus)

    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

    Keywords

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

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