Journal
CHEMSUSCHEM
Volume 8, Issue 1, Pages 77-81Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201402794
Keywords
carbonates; cellulose; dimethyl carbonate; ionic liquids
Funding
- Finnish Bioeconomy Cluster (FIBIC) as part of the Future Biorefinery (FuBio) Program
- Advanced Cellulose to Novel Products (ACEL) Program
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Dialkylcarbonates are viewed as low-cost, low-toxicity reagents, finding application in many areas of green chemistry. Homogeneous alkoxycarbonylation of cellulose was accomplished by applying dialkycarbonates (dimethyl and diethyl carbonate) in the ionic liquid-electrolyte trioctylphosphonium acetate ([P-8881] [OAc])/DMSO or 1-ethyl-3-methylimidazolium acetate ([emim] [OAc]). Cellulose dialkylcarbonates with a moderate degree of substitution (DS similar to 1) are accessible via this procedure and cellulose methylcarbonate was thoroughly characterized for its chemical and physical properties after regeneration. This included HSQC & HMBC NMR, ATR-IR, molecular weight distribution, morphology, thermal properties, and barrier properties after film formation.
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