Preparation of Completely Individualized Nanofibrils from Biomass, and Their Conversions to Environmentally Compatible Materials

从生物质中制备完全个性化的纳米原纤维及其向环境相容材料的转化

• 批准号: 21228007
• 负责人: ISOGAI Akira
• 金额: $ 126.05万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (S)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009-05-11 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21228007/
• 关键词: セルロース; ナノフィブリル; TEMPO; 触媒酸化; バイオマス; キチン; ナノ材料; ミクロフィブリル

The conventional/new TEMPO-mediated oxidations were applied to cellulose and chitin consisting of crystalline microfibrils and curdlan. Chemical structures, nanostructures and molecular weights of the obtained oxidized polysaccharides were elucidated. During these studies, new TEMPO-mediated oxidation mechanisms were made clear. Position-selective and efficient surface medication methods of TEMPO-oxidized nanofibrils via ion-exchange treatment were studied, and switching technologies of the nanofibrils from biodegradable to stable and from hydrophilic to hydrophobic nature were established. New composite materials consisting of the surface-modified nanofibrils were prepared under various conditions, and some of them had quite high mechanical strengths, gas-barrier/gas-selective separation functions, heavy-metal adsorption behavior, and transparent/flexible/conductive properties. Thus, TEMPO-oxidized nanofibrils have versatile potential applications as new bio-based nanomaterials.

传统的/新的TEMPO介导的氧化被施加到纤维素和甲壳素组成的结晶微纤维和凝胶。对所得氧化多糖的化学结构、纳米结构和分子量进行了表征。在这些研究中，新的TEMPO介导的氧化机制变得清晰。研究了离子交换法对TEMPO氧化纳米纤维的位置选择性和有效的表面药物化方法，建立了纳米纤维从生物降解到稳定、从亲水性到疏水性的切换技术。在各种条件下制备了由表面改性的纳米纤丝组成的新型复合材料，其中一些具有相当高的机械强度、气体阻隔/气体选择性分离功能、重金属吸附行为以及透明/柔性/导电性能。因此，TEMPO氧化的纳米纤维作为新型生物基纳米材料具有多方面的潜在应用。

项目成果

First aid for flood-damaged paper using saltwater : The inhibiting effect of saltwater on mold growth

使用盐水急救水灾纸张：盐水对霉菌生长的抑制作用

• DOI: 10.1179/2047058412y.0000000006
• 发表时间: 2012
• 期刊: Studies in conservation
• 影响因子: 0.8
• 作者: Kenta Higashijima;Chiaki Hori;et.al.
• 通讯作者: et.al.

Transparent and High Gas Barrier Films of Cellulose Nanofibers Prepared by TEMPO-Mediated Oxidation

• DOI: 10.1021/bm801065u
• 发表时间: 2009-01-01
• 期刊: BIOMACROMOLECULES
• 影响因子: 6.2
• 作者: Fukuzumi, Hayaka;Saito, Tsuguyuki;Isogai, Akira
• 通讯作者: Isogai, Akira

ナノセルロース技術の新展開

纳米纤维素技术新进展

• 发表时间: 2013
• 期刊: Cellulose Communications
• 作者: Uza N;Nakase H;Yamamoto S;Yoshino T;Takeda Y;Ueno S;Inoue S;Mikami S;Matsuura M;Shimaoka T;Kume N;Minami M;Yonehara S;Ikeuchi H;Chiba T;谷内 一郎;磯貝 明
• 通讯作者: 磯貝 明

Improvement of nanofibrillation efficiency of alpha-chitin in water by selecting acid used for surface cationisation

通过选择用于表面阳离子化的酸来提高水中α-甲壳素的纳米纤化效率

• DOI: 10.1039/c2ra22271j
• 发表时间: 2013
• 期刊: RSC Advances
• 影响因子: 3.9
• 作者: Zi-Dong Qi;Yimin Fan;Tsuguyuki Saito;Hayaka Fukuzumi;Yoshiyuki Tsutsumi;Akira Isogai
• 通讯作者: Akira Isogai

セルロースナノファイバーに関する研究開発の動向と最前線

纤维素纳米纤维的研究开发动态及前沿

• 发表时间: 2012
• 期刊: 紙パルプ技術タイムス
• 作者: Ueshima;K.;Kasahara;M.;Koya;D.;Babazono;T.;Sato;T.;Imamoto;M.;Yasuno;S.;Fujimoto;A.;Tanaka;S.;Kimura;G.;Nakao;K.;磯貝 明
• 通讯作者: 磯貝 明