| Budget Amount *help |
¥25,480,000 (Direct Cost: ¥19,600,000、Indirect Cost: ¥5,880,000)
Fiscal Year 2015: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2013: ¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
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| Outline of Final Research Achievements |
Activation of hydroxyl groups on the surface of crystalline nanocelluloses was investigated in order to improve their chemical reactivity. In this study, the pre-treatment of nanocelluloses with an aqueous NaOH solution was investigated. In the moderate condition, hydroxyl groups on the surface of nanocelluloses were activated via swelling with alkali treatment, resulting in a successful efficient modification like a caboxymethylation in an aqueous system.
Hydrophobic styrene oligomers were introduced onto the surface of nematic ordered cellulose (NOC) has alternately-aligned amphiphilic molecular tracks on its surface, but the wettability of the modified NOC was changed by UV-irradiation. The morphology of cellulose nanofibers on the modified NOC exhibited different from those on an original NOC. This may be due to hydrophobic interactions between nanofibers and hydrophobic groups of the modified NOC surface.
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