Study on the electrorheological effect of immiscible polymer blends and their applications

不相溶聚合物共混物的电流变效应及其应用研究

• 批准号: 13555046
• 负责人: ORIHARA Hiroshi
• 金额: $ 7.81万
• 依托单位: Nagoya 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-13555046/
• 关键词: Electrorheological fluid; polymer; immiscible blend; interface; instability; phaseinverion; network; confocal sranning laser microscope; ドロプレット; レオロジー

The main objectives of the project is to 1) synthesize several polymers for the immiscible polymer blend electrorheological (ER) fluid, 2) classify them according to physical properties, 3) elucidate the mechanism of ER effect ; the relationship between the domain structure and the rheological properties under shear flow and an electric field and 4) apply them to devices for controlling torque by an electric field.First, we developed a new system that combines a confocal scanning laser microscpe (CSLM) and a rheometer, with which structure observations and rheological measurements could be simultaneously made. In three different blends various structural changes were observed, which were all related to the electrorheological effect. In one blend we observed a phase inversion, while in another blend there was a change from an droplet-dispersed structure to a network structure. In the third one, a layer structure was observed and found to be destroyed by application of an electric field.In applications, Inoue and Furusho developed a caster-walker with ER fluid brakes and a rehabilitation robot system.

该项目的主要目标是1）合成几种聚合物用于不混溶聚合物共混电流变（ER）液，2）根据物理性质对它们进行分类，3）阐明ER效应的机制；剪切流和电场下域结构与流变特性之间的关系，4）将它们应用于通过电场控制扭矩的装置。首先，我们开发了一种新系统，该系统结合了共焦扫描激光显微镜（CSLM）和流变仪，可以同时进行结构观察和流变测量。在三种不同的混合物中观察到各种结构变化，这些变化都与电流变效应有关。在一种共混物中，我们观察到相转化，而在另一种共混物中，存在从液滴分散结构到网络结构的变化。在第三个实验中，观察到层状结构，发现施加电场会破坏层状结构。在应用中，Inoue 和 Furusho 开发了一种带有 ER 流体制动器的脚轮助行器和康复机器人系统。

项目成果

T.Yukimura, T.Taniguchi, M.Doi: "Dynamics of Diblock Copolymer Melts under Electric Field"Proc. Int. Conf. on Advanced Polymers and Processing. 237-243 (2001)

T.Yukimura、T.Taniguchi、M.Doi：“二嵌段共聚物在电场下熔化的动力学”Proc。

T.Yukimura, T.Taniguchi and M.Doi: "Dynamics of Diblock Copolymer Melts under Electric Fields"Proc.Int.Conf.on Advanced Polymers and Processing. 237-243 (2001)

T.Yukimura、T.Taniguchi 和 M.Doi：“二嵌段共聚物在电场下熔化的动力学”Proc.Int.Conf.on 先进聚合物和加工。

S.Ujiie, Y.Yano, A.Mori, K.Iimura: "Preparation of LC monodomain structure in polymer systems"SPIE. 4799. 148-159 (2002)

S.Ujiie、Y.Yano、A.Mori、K.Iimura：“聚合物体系中 LC 单域结构的制备”SPIE。

A.Inoue, U Ryu, S.Nishimura: "Caster-walker with intelligent brakes employing ER fluid composed of liquid crystalline polysiloxane"Proceedings of the Eighth International Conference on Electrorheological Fluids and Magnetorheological Suspensions. 23-29 (2

A.Inoue、U Ryu、S.Nishimura：“采用由液晶聚硅氧烷组成的 ER 流体的智能制动器脚轮助行器”第八届电流变液和磁流变悬浮液国际会议论文集。

H.Orihara, A.Taki, M.Doi, A.Inoue: "Electrorheological properties of a mixture of two immiscible fluids having the same viscosity"Journal of Rheology. 45. 1479-1487 (2001)

H.Orihara、A.Taki、M.Doi、A.Inoue：“具有相同粘度的两种不混溶流体的混合物的电流变特性”流变学杂志。