Development of hydrophobic cellulose film and high functional inorganic composite materials by using the bacterial cellulose

利用细菌纤维素开发疏水性纤维素膜及高功能无机复合材料

• 批准号: 16510094
• 负责人: YAMAMOTO Hiroyuki
• 金额: $ 2.5万
• 依托单位: Fukui National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16510094/
• 关键词: bacterial cellulose; pulp cellulose; nanofiber; acid hydrolysis; ball mill; cellulose crystal; titanium oxide; cellulose compound; Dye-sensitized Solar Cells; パルプ; 塩酸加水分解; SEM観察; 苛性ソーダ; 超音波処理; アルカリ熔解; 硫酸加水分解; 色素増感型太陽電池; 粉末X線回折; ミクロクリスタル

It is a purpose of this research to develop the hydrophobic cellulose film and the high functional materials by the compound of the cellulose and the inorganic compound, by using the bacterial cellulose that is the super-minute fiber. First, to prepare the nanofiber of the bacteria cellulose, the hydrolysis by sulfuric acid and a ball mill treatment were examined. These the crystal sizes of (200) and (11-0) planes in cellulose crystal hardly decreases on the hydrolysis treatment in 50% sulfuric acid at 80℃. However, the crystal size of (110) plane decreases in about 20%. It is thought. that this is because of relating with the hydrogen bond formed in the (110) lattice spacing. As a result, it was clarified to obtain the cellulose crystal of about 5 nm by this hydrolysis treatment of the sulfuric acid. On the other hand, in the ball mill treatment, it. has been understood that a minute powder of the agate container shaved by ball contaminates in the crushing cellulose. Therefore, it was clarified that this method was not a proper treatment.Next, the possibility as electrode material of Dye-sensitized Solar Cells that reached the stage of practical use was examined. The titanium oxide powder was distributed in the culture solution of bacteria cellulose, and the titanium oxide/bacteria cellulose compound film was prepared. However, it is understood that the cellulose is resolved by the photocatalystic action of titanium oxide, and the strength of compound film decreases remarkably. As a result, it is examining the improvement of this respect.Finally, by the hydrolysis treatment of the hydrochloric acid, the nanofiber of the bacterial cellulose and the pulp cellulose was prepared. These nanofibers were dissolved in 8% NaOH solution, and this solution was cast in the various organic solvent to examine the possibility of the hydrophobic cellulose film. However, it was not able to obtain a remarkable result.

本研究的目的是利用细菌纤维素这一超细纤维，通过纤维素与无机化合物的复合，开发疏水纤维素膜和高功能材料。首先，研究了硫酸水解法和球磨法制备细菌纤维素纳米纤维的工艺条件。在50%的硫酸溶液中，在80℃的条件下，纤维素晶体中的(200)和(11-0)晶面的尺寸几乎没有减小。然而，(110)晶面的晶体尺寸减小了约20%。这是有思想的。这是因为与(110)晶格间距中形成的氢键有关。结果表明，通过硫酸的这种水解处理，可以得到约5 nm的纤维素晶体。另一方面，在球磨机的处理上，它。据了解，玛瑙容器中的微小粉末被球状剃须后会污染压碎的纤维素。其次，探讨了染料敏化太阳能电池作为电极材料达到实际应用阶段的可能性。将二氧化钛粉末分散在细菌纤维素的培养液中，制备了二氧化钛/细菌纤维素复合膜。然而，据了解，纤维素是通过二氧化钛的光催化作用来分解的，复合膜的强度显著下降。最后，通过对盐酸的水解处理，制备出细菌纤维素和纸浆纤维素的纳米纤维。将这些纳米纤维溶解在8%的NaOH溶液中，并将该溶液浇铸在各种有机溶剂中，以考察疏水纤维素膜的可能性。然而，它未能取得显著的效果。

项目成果

Production of the Dye-sensitized Solar Cells using a Variety of Natural Dyes, and Introduction to Chemical Experiment in Liberal Education and Delivery Lectures

使用多种天然染料制作染料敏化太阳能电池，以及通识教育和授课中的化学实验介绍

• 发表时间: 2006
• 期刊: Research Reports of Fukui National College of Technology 40
• 作者: Kuniyuki Setogawa;Hiroyuki Yamamoto
• 通讯作者: Hiroyuki Yamamoto

Structural studies of bacterial cellulose through the solid-phase nitration and acetylation by CP/MAS 13C NMR spectroscopy

• DOI: 10.1007/s10570-005-9034-z
• 发表时间: 2006-01
• 期刊: Cellulose
• 影响因子: 5.7
• 作者: Hiroyuki Yamamoto;F. Horii;A. Hirai

いろいろな天然色素を用いた色素増感太陽電池の作製と学生実験や出前授業への導入

使用各种天然染料制作染料敏化太阳能电池并介绍学生实验和现场课程

• 发表时间: 2006
• 期刊: 福井工業高等専門学校 研究紀要 40
• 作者: 瀬戸川 城将;山本 裕之
• 通讯作者: 山本 裕之