4D printing with robust thermoplastic polyurethane hydrogel-elastomer trilayers

被引:104
作者
Baker, Anna B. [1 ,2 ]
Bates, Simon R. G. [1 ,2 ]
Llewellyn-Jones, Thomas M. [1 ,2 ]
Valori, Laurie P. B. [2 ]
Dicker, Michael P. M. [1 ]
Trask, Richard S. [1 ,2 ]
机构
[1] Univ Bristol, Bristol Composites Inst ACCIS, Sch Civil Aerosp & Mech Engn CAME, Bristol BS8 1TR, Avon, England
[2] Univ Bath, Mech Engn, Bath BA2 7AY, Avon, England
基金
英国工程与自然科学研究理事会;
关键词
4D printing; Hydrogels; Thermoplastic polyurethane; Trilayers; Origami; Active structures; ORIGAMI; ACTUATION; NANOFIBERS;
D O I
10.1016/j.matdes.2018.107544
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Here we present a new 4D printing technique capable of producing a diverse range of trilayer constructs using commercial low-cost desktop 3D printers. This unique methodology permits the viable construction of dynamically robust and complex origami architectures for a new generation of active structures. The resulting creations transform from flat 2D parts to 3D structures through submersion in water and return to their original configuration through dehydration. This technique uses commercially available materials and printers to enable a 4D printing method that is more accessible and affordable than previous examples of hydration triggered 4D printing. This method yields a controlled and predictable actuation route and final shape, enabling it to be used for both simple and complex origami inspired designs, such as the tessellated waterbomb origami pattern, a design that has not previously been realised with 4D printing. These new designs demonstrate how the integration of multiple trilayers into a single 3D print enables through-thickness control of actuation and resulting formation of active structures with complexity beyond what has previously been achieved with 4D printing. (c) 2018 The Authors. Published by Elsevier Ltd.
引用
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页数:8
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