| 초록 |
In this study, cellulose was treated by replacing highly toxic organic solvents with ionic liquids such as 1-butyl-3-methylimidazolium chloride, etc. The biomass treated with the ionic liquids is characterized by scanning electron microscopy, X-ray diffraction , thermogravimetric analysis and Fourier-transform infrared spectroscopy. The X-ray diffraction results revealed that most of the biomass treated with ionic liquids had low crystallinity. In the thermogravimetric analysis thermograms, it was confirmed that the pyrolysis temperature of the biomass treated with the ionic liquid decreased. However, it was found that the pyrolysis temperature of the biomass was increased again after the ionic liquid was washed with an antisolvent. This result can be interpreted in the range showing the O-H hydrogen bonding of cellulose in Fourier-transform infrared spectroscopy. The experimental results from this study would be helpful for a better understanding of the biomass regeneration mechanism of ionic liquids and increase the applicability of biomass to various fields. This study was supported by the Transport of Korean government and Korea National University of Transportation in 2022. |
