Novel Polymer Solid Electrolytes prepared from Polyurethane Cationomers

由聚氨酯阳离子聚合物制备的新型聚合物固体电解质

• 批准号: 10650866
• 负责人: IKEDA Yuko
• 金额: $ 2.24万
• 依托单位: KYOTO INSTITUTE 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: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650866/
• 关键词: Polymer solid electrolyte; Cationomer; Polyurethane; Ionene; Elastomer; Synthesis; Morphology; Physical properties; モルホロジー; ポリ(オキシテトラメチレン); ポリウレタンカチオノマー; ポリ(テトラヒドロフラン); 固体電解質; リビング重合; 力学的性質; ミクロ相分離構造; 導電率; イオン点

In order to prepare novel polymer solid electrolytes with an excellent ionic conductivity, the molecular design of ionic segment for ionic elastomer was carried out in this study. As a matrix of the solid electrolytes, the mobility of polymer chain is important because the mobile segments are preferable for ionic conduction and the flexible chains give a good adhesion between the matrix and electrode. Therefore, an elastomer is expected as a best polymer solid electrolyte among the polymers. Additionally, a thermoplastic elastomer has several advantages as a matrix for polymer solid electrolyte from the viewpoints of recycling and processability. It is because the elastomer shows the rubber elasticity at room temperature without chemical crosslinking. Thus, novel polyurethane cationomer and ionene elastomer were synthesized by using a living cationic polymerization of tetrahydrofuran. Especially, the new oligomeric ionic polyols were synthesized for the preparation of polyurethane cationomers. The mechanical properties and thermal properties of obtained ionic elastomers were found to be excellent as a solid electrolyte. Since the morphology of ionic elastomers reflected not only the performance but also the functionality, the relationship between the structure and properties was investigated by dynamic mechanical analysis, differential scanning calorimetry and small-angle X-ray scattering measurements. Consequently, the degree of aggregation of ionic segments of a novel aliphatic ionene elastomer composed of dimethyl ammonium group and poly (oxytetramethylene) was found to be smaller than those of dicationic type ionene elastomers reported. This observation suggests that the diffraction of ionic species in the matrix of aliphatic ionene elastomer may be high. The measurement of ionic conductivity of the obtained elastomers is conducting after doping the lithium perchlorate in the matrix using the impedance analyzer.

为了制备具有优异离子电导率的新型聚合物固体电解质，本研究对离子弹性体的离子链段进行了分子设计。作为固体电解质的基体，聚合物链的移动性非常重要，因为移动链段有利于离子传导，并且柔性链在基体和电极之间提供了良好的粘附力。因此，弹性体有望成为聚合物中最好的聚合物固体电解质。此外，从回收和加工性能的角度来看，热塑性弹性体作为聚合物固体电解质的基质具有多种优点。这是因为弹性体在室温下表现出橡胶弹性，无需化学交联。因此，通过四氢呋喃的活性阳离子聚合合成了新型聚氨酯阳离子聚合物和紫罗烯弹性体。特别是，合成了用于制备聚氨酯阳离子聚合物的新型低聚离子多元醇。发现所得离子弹性体作为固体电解质具有优异的机械性能和热性能。由于离子弹性体的形貌不仅反映性能而且反映功能性，因此通过动态力学分析、差示扫描量热法和小角X射线散射测量研究了结构与性能之间的关系。因此，发现由二甲基铵基团和聚（氧四亚甲基）组成的新型脂肪族紫罗烯弹性体的离子链段的聚集程度小于报道的双阳离子型紫罗烯弹性体的离子链段聚集程度。这一观察结果表明，脂肪族紫罗烯弹性体基质中离子物质的衍射可能很高。在基体中掺杂高氯酸锂后，使用阻抗分析仪测量所得弹性体的离子电导率。

项目成果

池田裕子: "末端セグメントにイオン点を有するプレポリマーから合成したポリウレタンカチオノマー"日本ゴム協会誌. 72. 96-101 (1999)

Yuko Ikeda：“由末端链段具有离子点的预聚物合成的聚氨酯阳离子聚合物”日本橡胶协会杂志 72. 96-101 (1999)。

池田裕子: "末端セグメントにイオン点を有するプレポリマーから合成したポリウレタンカチオノマー" 日本ゴム協会誌. 72・2. 96-101 (1999)

Yuko Ikeda：“由末端链段具有离子点的预聚物合成的聚氨酯阳离子聚合物”日本橡胶协会杂志72·2（1999）。