Interfacial design and 3D building-up of cellulosic nanomaterials

2015 Fiscal Year Final Research Report

• Project/Area Number: 25712020
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Wood science
• Research Institution: Kyushu University
• Principal Investigator: Yokota Shingo 九州大学, (連合)農学研究科(研究院), 助教 (30600374)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: セルロース / ナノファイバー / 水中カウンターコリジョン / ネマチックオーダーセルロース / リビングラジカル重合 / 表面・界面

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.

Free Research Field

セルロース材料化学