The Structure and Properties of Ultrathin Films Blended from Nanofibrils of Natural Fibers.

天然纤维纳米原纤维共混超薄膜的结构和性能。

• 批准号: 13460075
• 负责人: TANIGUCHI Takashi
• 金额: $ 4.61万
• 依托单位: NIIGATA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13460075/
• 关键词: NATURAL FIBERS; NANOFIBRILS; NANOBLENDS; ULTRA-THIN FILMS; BIODEGRADABLE FILM; CELLULOSE; CHITOSAN; COLLAGEN; 生分解性

In this study, a new type of the biodegradable ultrathin films have been developed using natural nanofibrils (NFs), and the surface-structure of their ultrathin films and mechanical properties are analyzed. Three kinds of natural fibers, wood pulp (bleached kraft pulp, cellulose), chitosan (commercial grade) and collagen (cow hide waste) were used as raw materials. A small commercial grinder with a specially designed disk was used to nanofibrillate the natural fibers. All the materials were controlled as a slurry containing 90 - 99 % water. The diameter of their NFs from wood pulp was about some nanometer and the diameter of the some ones from chitosan and collagen were some ten nanometer. A new type of ultrathin film was made from the water suspension of NFs. The thicknesses of these films were from about some hundreds nanometer to about some tens nanometer, being homogeneous, strong and translucent. The ultra thin films of three kinds of NFs were easily obtained by this water-suspension method without using an organic solvent. Each NFs in ultrathin films is oriented to parallel to its surface plane by structural analysis. The formation process of their ultrathin films was made by microfibrillating the NFs, and then their networks of microfibril were compared with the ordinary films of solvent-cast method. Now, we are able to prepare thin hybrid films which are expected for many uses. The thin film from the mixture of wood pulp, chitosan and collagen was about 1.5 times of that of print grade paper and about 2 times of that of polyethylene. These values of the films are sufficient for practical use.

本研究利用天然纳米原纤维（NFs）制备了一种新型可生物降解超薄膜，并对其表面结构和力学性能进行了分析。以木浆（漂白硫酸盐浆、纤维素）、壳聚糖（商品级）和胶原蛋白（牛皮废料）三种天然纤维为原料。一个带有特殊设计的圆盘的小型商用研磨机被用来对天然纤维进行纳米纤化。所有物料被控制为含有90% - 99%水的浆料。木浆制备的纳米颗粒直径约为几纳米，壳聚糖和胶原蛋白制备的纳米颗粒直径约为十纳米。以NFs的水悬浮液为原料制备了一种新型超薄膜。这些薄膜的厚度从几百纳米到几十纳米不等，具有均匀、坚固和半透明的特点。该方法在不使用有机溶剂的情况下，可以很容易地获得三种NFs的超薄膜。通过结构分析，将超薄膜中的每个NFs定向为与其表面平行。通过对纳米纤维进行微纤化制备其超薄薄膜，并与溶剂浇铸法制备的普通薄膜进行了对比。现在，我们能够制备出具有多种用途的混合薄膜。由木浆、壳聚糖和胶原蛋白混合制成的薄膜约为印刷级纸的1.5倍，约为聚乙烯的2倍。这些薄膜的值对于实际应用是足够的。

项目成果

T.Taniguchi et al.: "Micro-and Nano-Fibrils from Cellulosic Fibers and its Application"1st International Cellulose Conference, Nov., 6-8, Kyoto, Japan. (Preprint). 85 (2002)

T.Taniguchi 等人：“纤维素纤维中的微米和纳米原纤维及其应用”第一届国际纤维素会议，11 月 6 日至 8 日，日本京都。

T. Taniguchi et. Al.: "Biodegradable Ultrathin Films Produced from Nanofibrils of the Natural Fibers and their Structure"UPAC World Polymer Congress 2002, 39th International Symposium on Macromolecules. July 7-12, Beijing, China, Preprints Pt 2. 967 (2002

T.谷口等。

T.Taniguchi et al.: "Micro-and Nano-Fibrils from Cellulosic Fibers and its Application"1st International Cellulose Conference, Nov., 6-8, Kyoto Japan, Priprint. 85 (2002)

T.Taniguchi 等人：“纤维素纤维中的微米和纳米原纤维及其应用”，第一届国际纤维素会议，11 月 6-8 日，日本京都，Priprint。

T.Taniguchi et al.: "Biodegradable Nanofibrils Produced from the Natural Fibers and its Application."Polym International Conference at Montpellier, France Polymers in the Third Millenium. WED A4 (2001)

T.Taniguchi 等人：“由天然纤维生产的可生物降解纳米纤维及其应用。”在法国蒙彼利埃举行的聚合物国际会议第三个千年的聚合物。

T. Taniguchi et. Al.: "Micro- and Nanofibrils from Cellulosic Fibers and its Application"1st International Cellulose Conference. Nov., 6-8, Kyoto, Japan, Preprint. 85 (2002)

T.谷口等。