Abstract
Magnetic soft materials (MSMs) and magnetic shape memory polymers (MSMPs) have been some of the most intensely investigated newly developed material types in the last decade, thanks to the great and versatile potential of their innovative characteristic behaviors such as remote and nearly heatless shape transformation in the case of MSMs. With regard to a number of properties such as shape recovery ratio, manufacturability, cost or programming potential, MSMs and MSMPs may exceed conventional shape memory materials such as shape memory alloys or shape memory polymers. Nevertheless, MSMs and MSMPs have not yet fully touched their scientific-industrial potential, basically due to the lack of detailed knowledge on various aspects of their constitutive response. Therefore, MSMs and MSMPs have been developed slowly but their importance will undoubtedly increase in the near future. This review emphasizes the development of MSMs and MSMPs with a specific focus on the role of the magnetic particles which affect the shape memory recovery and programming behavior of these materials. In addition, the synthesis and application of these materials are addressed.
Highlights
Magnetic shape memory polymers (MSMPs) belong to the group of shape memory materials, a group that can change their shape back to their “remembered” shape when they are exposed to a stimulus [1]
Even though there are multiple shape memory materials that are activated by magnetic fields, this review will focus on MSMPs as well as Magnetic soft materials (MSMs)
In the last twenty years, MSMPs and MSMs have been developed to serve the purposes of a number of specific design applications
Summary
Magnetic shape memory polymers (MSMPs) belong to the group of shape memory materials, a group that can change their shape back to their “remembered” shape when they are exposed to a stimulus [1]. In the case of the MSMPs, magnetic particles are incorporated in the shape memory polymer. The heated particles heat the shape memory polymer from the inside and when the activation temperature is reached, the shape memory effect is activated [15,16,17]. When the magnetic soft material is placed inside an fields of these magnetic particles are set in specific magnetization patterns inside the external static magnetic field, the magnetic fields of the magnetic particles align with the elastomer during the fabrication process. When the magnetic soft material is placed inside external magnetic field This creates micro torques in the the magnetic elastomerparticles and pulls thewith elastoan external static magnetic field, the magnetic fields of align the mer matrix in a programmed shape micro [15,16].torques in the elastomer and pulls the elastomer external magnetic field.
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