Programmable morphing, electroactive porous shape memory polymer composites with battery-voltage Joule heating stimulated recovery

Direct fabrication of electroactive shape memory polymer composites (eSMPCs) into complex non-planar geometries is highly desirable to enable remotely deployable, form-functional structures. However, traditional processes such as injection molding, casting, and extrusion limit the producible geometr...

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Main Authors: Lai-Iskandar, S., Li, Wenhao, Tsang, S. H., Lee, Y. H., Teo, Edwin Hang Tong
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/163652
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1636522022-12-17T23:32:01Z Programmable morphing, electroactive porous shape memory polymer composites with battery-voltage Joule heating stimulated recovery Lai-Iskandar, S. Li, Wenhao Tsang, S. H. Lee, Y. H. Teo, Edwin Hang Tong School of Electrical and Electronic Engineering School of Materials Science and Engineering School of Mechanical and Aerospace Engineering Smart Small Satellite Systems Thales in NTU (S4TIN) Joint Laboratory Temasek Laboratories @ NTU Engineering::Electrical and electronic engineering Engineering::Materials Direct Fabrications Electro Actives Direct fabrication of electroactive shape memory polymer composites (eSMPCs) into complex non-planar geometries is highly desirable to enable remotely deployable, form-functional structures. However, traditional processes such as injection molding, casting, and extrusion limit the producible geometries to planar ribbons, wires, or tubes and the design of deployment modes to flattening-out/self-folding motions. To achieve low-voltage eSMPCs with a complex geometry, we report a direct fabrication strategy of bespoked-geometry eSMPCs via a two-stage sequential cure-and-foam technique for a new type of porous eSMPC, functionalized with 3D graphene nanofoam monolith (3DC). In our method, we resolved the difficulty in shaping fragile 3DC, and thus, various complex shape transforms (curved, helical, and wavy) can be intuitively designed via direct sculpting. Our method can be compatible with kirigami techniques for the design of hierarchical and combinatorial shape-change structures. 3DC not only serves as an intrinsic heater but, during synthesis, its cell walls also act as a confinement framework for architecting porosity within 3DC-eSMPCs, which can be actuated with low-voltage (7.5 V, <2 W). The herein reported 3DC-eSMPC and its synthesis strategy represent a new method and material to fabricate low-voltage deployables of bespoked shapes, capable of low-voltage actuation. Economic Development Board (EDB) Nanyang Technological University Published version This research was funded by Thales Alenia Space S. p.A. and Thales Solutions Asia Pte Ltd. under the Economic Development Board, Industrial Postgraduate Programme, with Nanyang Technological University, Singapore. 2022-12-13T05:54:11Z 2022-12-13T05:54:11Z 2022 Journal Article Lai-Iskandar, S., Li, W., Tsang, S. H., Lee, Y. H. & Teo, E. H. T. (2022). Programmable morphing, electroactive porous shape memory polymer composites with battery-voltage Joule heating stimulated recovery. APL Materials, 10(7), 071109-. https://dx.doi.org/10.1063/5.0093683 2166-532X https://hdl.handle.net/10356/163652 10.1063/5.0093683 2-s2.0-85135366015 7 10 071109 en APL Materials © 2022 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Engineering::Materials
Direct Fabrications
Electro Actives
spellingShingle Engineering::Electrical and electronic engineering
Engineering::Materials
Direct Fabrications
Electro Actives
Lai-Iskandar, S.
Li, Wenhao
Tsang, S. H.
Lee, Y. H.
Teo, Edwin Hang Tong
Programmable morphing, electroactive porous shape memory polymer composites with battery-voltage Joule heating stimulated recovery
description Direct fabrication of electroactive shape memory polymer composites (eSMPCs) into complex non-planar geometries is highly desirable to enable remotely deployable, form-functional structures. However, traditional processes such as injection molding, casting, and extrusion limit the producible geometries to planar ribbons, wires, or tubes and the design of deployment modes to flattening-out/self-folding motions. To achieve low-voltage eSMPCs with a complex geometry, we report a direct fabrication strategy of bespoked-geometry eSMPCs via a two-stage sequential cure-and-foam technique for a new type of porous eSMPC, functionalized with 3D graphene nanofoam monolith (3DC). In our method, we resolved the difficulty in shaping fragile 3DC, and thus, various complex shape transforms (curved, helical, and wavy) can be intuitively designed via direct sculpting. Our method can be compatible with kirigami techniques for the design of hierarchical and combinatorial shape-change structures. 3DC not only serves as an intrinsic heater but, during synthesis, its cell walls also act as a confinement framework for architecting porosity within 3DC-eSMPCs, which can be actuated with low-voltage (7.5 V, <2 W). The herein reported 3DC-eSMPC and its synthesis strategy represent a new method and material to fabricate low-voltage deployables of bespoked shapes, capable of low-voltage actuation.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Lai-Iskandar, S.
Li, Wenhao
Tsang, S. H.
Lee, Y. H.
Teo, Edwin Hang Tong
format Article
author Lai-Iskandar, S.
Li, Wenhao
Tsang, S. H.
Lee, Y. H.
Teo, Edwin Hang Tong
author_sort Lai-Iskandar, S.
title Programmable morphing, electroactive porous shape memory polymer composites with battery-voltage Joule heating stimulated recovery
title_short Programmable morphing, electroactive porous shape memory polymer composites with battery-voltage Joule heating stimulated recovery
title_full Programmable morphing, electroactive porous shape memory polymer composites with battery-voltage Joule heating stimulated recovery
title_fullStr Programmable morphing, electroactive porous shape memory polymer composites with battery-voltage Joule heating stimulated recovery
title_full_unstemmed Programmable morphing, electroactive porous shape memory polymer composites with battery-voltage Joule heating stimulated recovery
title_sort programmable morphing, electroactive porous shape memory polymer composites with battery-voltage joule heating stimulated recovery
publishDate 2022
url https://hdl.handle.net/10356/163652
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