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/新型 TEMPO 介导的氧化应用于由结晶微纤维和凝胶多糖组成的纤维素和甲壳素。阐明了所得氧化多糖的化学结构、纳米结构和分子量。在这些研究中，新的 TEMPO 介导的氧化机制得到了阐明。研究了通过离子交换处理TEMPO氧化纳米纤丝的位置选择性和高效表面处理方法，建立了纳米纤丝从可生物降解到稳定、从亲水性到疏水性的转换技术。在各种条件下制备了由表面修饰的纳米纤丝组成的新型复合材料，其中一些材料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 氧化纳米原纤维作为新型生物基纳米材料具有多种潜在应用。

项目成果

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

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

Preparation and characterization of TEMPO-oxidized cellulose nanofibril films with free carboxyl groups

• DOI: 10.1016/j.carbpol.2010.12.029
• 发表时间: 2011-02-11
• 期刊: CARBOHYDRATE POLYMERS
• 影响因子: 11.2
• 作者: Fujisawa, Shuji;Okita, Yusuke;Isogai, Akira
• 通讯作者: Isogai, Akira

強靭かつ透明な撥水性TOCN／ナノクレイ複合体

坚韧透明的拒水 TOCN/纳米粘土复合材料

• 发表时间: 2013
• 作者: 石田憲幸;高崎俊之;石松昌展;石田亨;山口祐人;Chun-Nan Wu，楊 全嶺，竹内美由紀，斉 紫東，齋藤継之，磯貝 明
• 通讯作者: Chun-Nan Wu，楊 全嶺，竹内美由紀，斉 紫東，齋藤継之，磯貝 明

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