| Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
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| Outline of Final Research Achievements |
p-Cresol or 2,4-dimethylphenol was impregnated to wood meal or chip. Hemicellulose was converted to constituent sugars and furfurals by hydrothermal or weak acid prehydrolysis. The obtained pre-hydrolyzed wood consists of cellulose and lignin, and we succeeded in obtaining lignin with thermoplasticity and solvent solubility in high yield by alkaline treatment. Cellulose could also be recovered in high yield by applying low-temperature alkaline extraction at about 50 degree C. Lignin-containing cellulose nanofibers was produced by defibrillation using grinder from the materials obtained in this process. It was suggested that lignin could be used as a lignin epoxy resin curing agent.
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