Study on the structure and properties of multiphase elastomers- Approach from the Cascade theory

多相弹性体的结构与性能研究——级联理论方法

• 批准号: 13650954
• 负责人: IKEDA Yuko
• 金额: $ 2.3万
• 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: 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/grant/KAKENHI-PROJECT-13650954/
• 关键词: Elastomer; Morphology; Higher-order structure; Cascade theory; Small-angle X-ray scattering; Mechanical properties; Thermal properties; Multiphase material; アイオネンエラストマー; 力学的性質; 小角X線散乱; ポリ(オキシテトラメチレン); リビング重合; モルホロジー; アイオノマー

Five multiphase elastomers were synthesized by using polymer reactions, living cationic polymerization and sol-gel reaction in order to investigate a usefulness of new analytical method based on the Cascade theory for fitting small-angle X-ray scattering profiles of multiphase elastomers. The samples were a butyl rubber-graft-poly (ethylene oxide), butyl rubber-pendant-maltonolactone, viologen type poly (oxytetramethylene) iomene clastomer, aliphatic poly (oxytetramethylene) ionene elastomer and organic/inorganic hybrid networks which was composed of poly (oxytetramethylene) and silica component. The morphology of the elastomers was analyzed in the nano-scale by fitting the cascade model for randomly branched f-functional polycondensates incorporated in Debye-Bueche random-two-phase model and the interference term by the interdomain interaction on their small-angle X-ray scattering profiles. The structural parameters such as a size of aggregated ionic domains and distance between the domains were determined by SAXS measurements. Not only in the case of physically crosslinked elastomers but also covalently crosslinked elastomers, the new model was found to be useful for analysis of higher-order structure of multiphase elastomers, when small heterogeneous domains were distributed over the space (polymer matrix) in a random fashion, specified by the cascade process. The relationship between the structure and properties was appeared in this study, which will be valuable for a material design of functional elastomers.

采用聚合物反应、活性阳离子聚合和溶胶-凝胶反应合成了5种多相弹性体，研究了基于Cascade理论的多相弹性体小角X射线散射谱拟合新方法的有效性。样品分别为丁基橡胶接枝聚环氧乙烷、丁基橡胶侧基麦芽糖酸内酯、紫精型聚氧四亚甲基聚奥烯弹性体、脂肪族聚氧四亚甲基聚奥烯弹性体以及由聚氧四亚甲基和二氧化硅组分组成的有机/无机杂化网络。通过拟合Debye-Bueche无规两相模型中的无规支化f-官能缩聚物的级联模型和通过其小角X射线散射曲线上的畴间相互作用的干涉项，在纳米尺度上分析了弹性体的形态。通过SAXS测量确定结构参数，例如聚集的离子域的大小和域之间的距离。不仅在物理交联弹性体的情况下，但也共价交联弹性体，新的模型被发现是有用的多相弹性体的高阶结构的分析，当小的非均相域分布在空间（聚合物基体）以随机的方式，指定的级联过程。研究结果揭示了结构与性能之间的关系，对功能弹性体的材料设计具有一定的参考价值。

项目成果

Y. Ikeda, T. Murakami, H. Urakawa, S. Kohjiya, R. Grottenmuller, M. Schmidt: "One-pot synthesis and characterization of aliphatic poly(oxytetramethylene) ionene"Polymer. 43. 3483-3488 (2002)

Y. Ikeda、T. Murakami、H. Urakawa、S. Kohjiya、R. Grottenmuller、M. Schmidt：“脂肪族聚（氧四亚甲基）紫罗烯的一锅合成和表征”聚合物。

Yuko Ikeda: "One-pot synthesis and characterization of aliphatic poly(oxytetramethylene) ionene"Polymer. 43. 3483-3488 (2002)

Yuko Ikeda：“脂肪族聚（氧四亚甲基）紫罗烯的一锅合成和表征”聚合物。

Y. Ikeda: "New development for rubbers and elastomers"Nihon no Kagakusya. 37, No.6. 30-35 (2002)

Y. Ikeda：“橡胶和弹性体的新发展”Nihon no Kagakusya。

Yuko Ikeda: "One-pot synthesis and characterization of aliphatic poly(oxytetrame thylene)ionene"Polymer. (印刷中).

Yuko Ikeda：“脂肪族聚（氧四甲基）紫罗烯的一锅合成和表征”（正在出版）。

Yuko Ikeda: "Cascade model for physically cross-linked elastomers : Morphological characteristics of nonionic and semi-crystalline ionene elastomers"J. Macromol. Sci. -Phys.. B40. 171-188 (2001)

Yuko Ikeda：“物理交联弹性体的级联模型：非离子和半结晶紫罗烯弹性体的形态特征”J。