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- Title
Raman microscopic analysis of wood after treatment with the ionic liquid, 1-ethyl-3-methylimidazolium chloride.
- Authors
Kanbayashi, Toru; Miyafuji, Hisashi
- Abstract
Japanese cedar ( Cryptomeria japonica) was treated with the ionic liquid (IL) 1-ethyl-3-methylimidazolium chloride ([C2mim][Cl]), which is a solvent for cellulose, and the changes in the chemical components and their distribution in wood cell walls have been investigated by Raman microscopy. Raman spectra, recorded from various areas of the cell walls, showed that lignin in the compound middle lamellae (CML) and cell corners (CC) was resistant to the reaction with [C2mim][Cl], but its molecular structure changed partially. The reactivity of cellulose and hemicelluloses with [C2mim][Cl] was higher than that of lignin in the cell wall, and the cell wall structure was maintained even in an advanced state of the reactions. The effects of [C2mim]-[Cl] on cellulose and hemicelluloses in the cell wall were homogeneous, whereas that of lignin was inhomogeneous.
- Subjects
WOOD; IONIC liquids; IMIDAZOLES; ETHYL chloride; CRYPTOMERIA japonica; RAMAN microscopy
- Publication
Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood, 2015, Vol 69, Issue 3, p273
- ISSN
0018-3830
- Publication type
Article
- DOI
10.1515/hf-2014-0060