Remote, fast actuation of programmable multiple shape memory composites by magnetic fields

Zhang, F. H.; Zhang, Z. C.; Luo, C. J.; Lin, I-Ting; Liu, Yanju; Leng, Jinsong; Smoukov, Stoyan K.

doi:10.1039/c5tc02464a

Cited by 97 publications

(62 citation statements)

References 18 publications

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“…SMPs gain a rising attentions from both scientific and technological fields with the requirements for more diverse and intelligent demands. Stimuli manner evolved from the direct heating to remote heating like light, magnetism, and electricity, from thermal manner to athermal manners, physical manner, and chemical manner and so on, dramatically promoting the applications of SMPs. However, the traditional thermal products can memorize just two shapes, namely, dual‐SMPs (DSMPs) and the programmed shape varies only in one‐way model from "B → A", neither more temporary shapes nor the two‐way model "A ↔ B" upon cyclic stimulus are expected for traditional DSMPs.…”

Section: Introductionmentioning

confidence: 99%

A triple‐shape memory material fabricated by in situ crosslinking of poly(butylene adipate‐co‐terephthalate)/ε‐polycaprolactone via electron‐beam irradiation and its triple‐shape memory effects

Qian

et al. 2019

J of Applied Polymer Sci

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In this work, we fabricated a triple-shape memory polymeric material though in situ crosslinking of poly(butylene adipate-co-terephthalate)/ε-polycaprolactone blends induced by electron beam irradiation. The intrinsic property of irradiation crosslinking, crosslinking rule in this heterogeneous system, formation of interfacial bridge molecular, and the resulted interfacial strength were investigated. No obvious interfacial slips were observed in tensile test, and the elongation at break was above 900%. The high-temperature relaxation and recovery experiments at nonlinear region confirmed the excellent hyperelasticity and recovery ratios (R r ) can be as high as 95% for samples irradiated above 96 kGy. The mismatch between heating rate and relaxation kinetics resulted in both instable temporary shapes and heating-mode dependent recovery behavior during the recovery process. Self-stability of the temporary shape at middle temperature was also emphasized in view of the phenomenon that the second R r was above 100% in our experiments.

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Section: Introductionmentioning

confidence: 99%

A triple‐shape memory material fabricated by in situ crosslinking of poly(butylene adipate‐co‐terephthalate)/ε‐polycaprolactone via electron‐beam irradiation and its triple‐shape memory effects

Qian

et al. 2019

J of Applied Polymer Sci

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“…These environmentally triggered shape transformations have attracted tremendous interest over various fields of applications in recent years . Numerous adaptive bioinspired programmable materials are developed to spontaneously change their shape in order to perform complex transformation or motion (e.g., folding, twisting or multistage shape evolution) in response to an external stimulus (e.g., humidity, temperature, light, solvent, magnetic field, electric field) . Compared to conventional responsive materials, adaptive programmable materials exhibit a higher degree of freedom and compliance for force tunability.…”

Section: Introductionmentioning

confidence: 99%

Programmable Light‐Activated Gradient Materials Based on Graphene–Polymer Composites

Zhang

Tan

2018

Adv Materials Inter

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materials exhibit a higher degree of freedom and compliance for force tunability. Subsequently, the development of adaptive programmable materials with sophisticated structures that are capable of more refined movements has become a burning pursuit for materials scientists. To date, most adaptive programmable materials are fabricated based on the unique properties inherent to a specific class of materials, such as metallic alloys, shapememory polymers, stimuli-responsive polymers, and polymer-inorganic hybrid materials. [8,10,11,[17][18][19][20][21] Amongst these materials, stimuli-responsive polymers and polymer-inorganic hybrid materials exhibit the greatest versatility considering their diverse molecular structures as well as the extensive range of possible triggers. In particular, polymer-inorganic hybrid materials not only possess the desired mechanical attributes, they also afford a richer range in compositions and structures that will facilitate an extensive range of engineering applications. [22][23][24] Thus, the polymer-inorganic hybrid materials present the most potential to be developed as adaptive programmable materials with an extensive range of flexibility and mobility.The design of programmable materials with shape-changing abilities relies on the nonlinear responsiveness of a localized region, where generally an external stimulus would cause distortion due to nonuniform volumetric changes. [10][11][12] Inspired by nature, creating materials with heterogonous compositions and structures have become an effective strategy to achieve controlled nonuniform volumetric changes. Broadly, there are three general approaches as follows. The first approach is to incorporate two or more responsive components with different swelling properties or responsiveness to different external triggers into one material system. [25] The stress difference between the different parts drives the shape change in response to a specific signal. Bilayer structure is the typical approach used to generate the nonuniform volumetric changes, in which the wrinkling or expansion of the active layer relative to the inert layer induces the bending or folding of the bilayer structure. [5,[26][27][28][29] The complexes of polymer and inorganic nanoparticles such as silica (SiO 2 ), Au nanoparticles, carbon nanotube (CNT), and graphene (graphene oxide (GO)), have been successfully used to form bilayer structures with another polymer layer to demonstrate large-scale bending motion in response to changes in Recently, adaptive programmable materials capable of changing their shape to perform complex motions in response to an external stimulus have attracted tremendous interest. The shape-changing abilities rely heavily on the non-linear response of a localized area, where generally an external stimulus would cause distortion due to non-uniform volumetric changes. Hence, creating materials with heterogeneous compositions and structures have become an effective strategy to achieve the non-uniform volumetric changes. Here, a versatile strategy ...

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“…Due to inherent versatility, SMPs have been proposed for applications spanning biomedical devices,, space applications, microsensors and actuators, drug delivery systems and intelligent textiles, among others ,. The most common trigger for a SMP is heat; however, SMPs triggered by light, ultrasound, electricity, water, solvents and magnetism, have been reported as well. SMPs exhibiting unique properties like anisotropy, soft actuation, light emission, self‐healing and other special properties reviewed here have also been developed.…”

Section: Introductionmentioning

confidence: 99%

Ternary Polymeric Composites Exhibiting Bulk and Surface Quadruple‐Shape Memory Properties

et al. 2018

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We report the design and characterization of a multiphase quadruple shape memory composite capable of switching between 4 programmed shapes, three temporary and one permanent. Our approach combined two previously reported fabrication methods by embedding an electrospun mat of PCL in a miscible blend of epoxy monomers and PMMA as a composite matrix. As epoxy polymerization occurred the matrix underwent phase separation between the epoxy and PMMA materials. This created a multiphase composite with PCL fibers and a two-phase matrix composed of phase-separated epoxy and PMMA. The resulting composite demonstrated three separate thermal transitions and amenability to mechanical programming of three separate temporary shapes in addition to one final, equilibrium shape. In addition, quadruple surface shape memory abilities are successfully demonstrated. The versatility of this approach offers a large degree of design flexibility for multi-shape memory materials.

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Remote, fast actuation of programmable multiple shape memory composites by magnetic fields

Abstract: Magnetic field actuated shape recovery behavior of a 3D box folded by a Nafion/Fe3O4 composite membrane with its surface temperature near body temperature.

Cited by 97 publications

References 18 publications

A triple‐shape memory material fabricated by in situ crosslinking of poly(butylene adipate‐co‐terephthalate)/ε‐polycaprolactone via electron‐beam irradiation and its triple‐shape memory effects

A triple‐shape memory material fabricated by in situ crosslinking of poly(butylene adipate‐co‐terephthalate)/ε‐polycaprolactone via electron‐beam irradiation and its triple‐shape memory effects

Programmable Light‐Activated Gradient Materials Based on Graphene–Polymer Composites

Ternary Polymeric Composites Exhibiting Bulk and Surface Quadruple‐Shape Memory Properties

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