Soft magneto‐responsive shape memory foam composite actuators

Lalegani Dezaki, M ORCID: https://orcid.org/0000-0001-5680-1550 and Bodaghi, M ORCID: https://orcid.org/0000-0002-0707-944X, 2022. Soft magneto‐responsive shape memory foam composite actuators. Macromolecular Materials and Engineering: 2200490. ISSN 1438-7492

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Abstract

Soft magnetic composites are exceptional because they can be controlled remotely, move quickly, conform to hard things, and interact with people safely. However, even with all these features, magnetic elastomers suffer a lack of stability due to the high softness of the elastomer. This issue affects their controllability and repeatability. This article introduces a novel conceptual design of magneto-responsive shape memory polyurethane (SMP) foam composites with high stability and reversibility. The fabrication technique is based on the silicone resins filled with strontium ferrite magnetic particles and a thin SMP foam placed onto one side. Material properties, room-temperature shape recovery features, and magnetization conditions necessary for the process are determined by experimental studies of composite actuators. As a result, a workable, light, stable, soft composite gripper with programmable magnetic patterns is created, which can carry out activities like grabbing, holding, and moving objects in horizontal and vertical directions when a low magnetic field is applied. The SMP foam increases the contact surface and decreases the weight by up to three times providing better stability compared to the magnetic elastomer without SMP foam. The shape-recoverable gripper with a small contract area can lift objects eight times heavier than its weight.

Item Type:	Journal article
Publication Title:	Macromolecular Materials and Engineering
Creators:	Lalegani Dezaki, M. and Bodaghi, M.
Publisher:	Wiley
Date:	25 August 2022
ISSN:	1438-7492
Identifiers:	Number Type 10.1002/mame.202200490 DOI 1599250 Other
Rights:	© 2022 The Authors. Macromolecular Materials and Engineering published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Divisions:	Schools > School of Science and Technology
Record created by:	Laura Ward
Date Added:	15 Sep 2022 13:02
Last Modified:	15 Sep 2022 13:02
URI:	https://irep.ntu.ac.uk/id/eprint/47039

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