可控磁活性聚合物导管

A. Diermeier, D. Sindersberger, L. Krenkel, X. Rosell, G. Monkman
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引用次数: 1

摘要

磁活性聚合物(MAP)是一种智能材料,其机械特性,如弹性模量和剪切模量,可以通过外部施加的磁场来控制。可以使用各种添加剂来影响聚合物基体的特性,而软磁和/或硬磁颗粒的悬浮液决定复合材料的磁性能。固化前磁化和固化后磁化都是可能的。一系列的控制策略已经研究了评估系统使用不同的运动粘度流体。根据磁场均匀性的不同,磁变形和磁致伸缩有助于MAP的驱动。本文介绍了一种新的蠕动MAP管系统的应用,适用于生物医学研究中血液循环系统中血液流变液的流动控制和泵送。
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Controllable Magnetoactive Polymer Conduit
Magneto-active Polymers (MAP) are smart materials whose mechanical characteristics, such as elastic and shear moduli, may be controllable by means of an externally applied magnetic field. Various additives may be used to influence the characteristics of the polymer matrix whilst a suspension of soft and/or hard magnetic particles determine the magnetic properties of the composite. Both pre-cure and post-cure magnetization is possible. A range of control strategies have been investigated for evaluation of the system using fluids of differing kinematic viscosity. Depending on the degree of magnetic field homogeneity, magneto-deformation and magnetostriction contribute to MAP actuation. This paper presents a novel application in the form of a peristaltic MAP tube system, applicable to flow control and pumping of hemorheological fluids in blood circulatory systems for biomedical research purposes.
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