Shape memory polymer review for flexible artificial intelligence materials of biomedical

Oladapo, Bankole I.; Kayode, Joseph F.; Akinyoola, John O.; Ikumapayi, M.O.

doi:10.1016/j.matchemphys.2022.126930

Cited by 40 publications

(12 citation statements)

References 92 publications

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“…[189][190][191][192][193][194][195][196][197] This technology is highly suitable for developing a wide range of objects spanning from small prototypes to large-scale structures. [7,[198][199][200] In extrusion-based printing, the successive printed layers bonded together by one of the two approaches: fused deposition modeling (FDM) and direct ink writing (DIW). [201][202][203][204] FDM utilizes temperature to liquefy the solid feedstock enabling the flow through the extrusion nozzle and deposition over the previously printed layer, [205][206][207][208][209] as illustrated in Figure 3A, which forms bonds during solidification.…”

Section: Extrusion-based Printingmentioning

confidence: 99%

Recent Advances in the Additive Manufacturing of Stimuli‐Responsive Soft Polymers

Tariq,

Arif,

Khalid

et al. 2023

Adv Eng Mater

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Stimuli‐responsive polymers (SRPs) are special types of soft materials, which have been extensively used for developing flexible actuators, soft robots, wearable devices, sensors, self‐expanding structures, and biomedical devices, thanks to their ability to change their shapes and functional properties in response to external stimuli including light, humidity, heat, pH, electric field, solvent, and magnetic field or combinations of two or more of these stimuli. In recent years, additive manufacturing (AM) aka three‐dimensional (3D) printing technology of these SRPs, also known as four‐dimensional (4D) printing, has gained phenomenal attention in different engineering fields, thanks to its unique ability to develop complex, personalized, and innovative structures, which undergo twisting, elongating, swelling, rolling, shrinking, bending, spiraling, and other complex morphological transformations. Herein, an effort has been made to provide insightful information about the AM techniques, type of SRPs, and their applications including, but not limited to tissue engineering, soft robots, bionics, actuators, sensors, construction, and smart textiles. This article also incorporates the current challenges and prospects, hoping to provide an insightful basis for the utilization of this technology in different engineering fields. It is expected that the amalgamation of 3D printing with SRPs would provide unparalleled advantages in different engineering arenas.This article is protected by copyright. All rights reserved.

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Section: Extrusion-based Printingmentioning

confidence: 99%

Recent Advances in the Additive Manufacturing of Stimuli‐Responsive Soft Polymers

Tariq,

Arif,

Khalid

et al. 2023

Adv Eng Mater

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“…High deformation rates (nearly 200%), low cost, and low density are only a few of the benefits of SMPs over SMAs 69 . It is expected that SMPs would find extensive application in biopolymers, tissue engineering, as well as biomedicine as a result of their high biocompatibility and biodegradability 28 . Both the structure and orientation of polymer chains have an important part in the shape‐memory effects.…”

Section: Thermo‐responsive Shape Memory Polymersmentioning

confidence: 99%

“…69 It is expected that SMPs would find extensive application in biopolymers, tissue engineering, as well as biomedicine as a result of their high biocompatibility and biodegradability. 28 Both the structure and orientation of polymer chains have an important part in the shapememory effects. Manufacturing and molecular design of SMPs need careful management.…”

Section: Thermo-responsive Shape Memory Polymersmentioning

confidence: 99%

“…4,5 Researchers used different stimuli such as pH, 6,7 magnetic and electric fields, [8][9][10] light, 11,12 humidity, 13,14 and heat (directly or indirectly), to activate the functioning of these smart materials. Biomaterials, 15,16 wearable electronics and textiles, [17][18][19] automotive and aerospace, 20,21 sensors and actuators, 22,23 self-healing, 24,25 smart packaging, 26 and multifunctional applications 27,28 are some of the important SMMs application. Shape memory polymers (SMPs) are also used in many potential applications, including hydrogels, 29 aerogels, 44 and shape-memory surfaces.…”

Section: Introductionmentioning

confidence: 99%

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Recent trends in thermo‐responsive elastomeric shape memory polymer nanocomposites

et al. 2023

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Shape memory polymers (SMPs) are polymeric smart materials, a class of stimuli‐responsive polymers that can return to their initial shape from a programmed temporary shape under the application of external stimuli, such as light, heat, magnetism, and electricity. Because of these unique features, SMPs can find applications in many fields, like aerospace, biomedical devices, flexible electronics, soft robotics, shape memory arrays, and 4D printing. The comparatively low density, low cost, easy biodegradability, and biocompatibility make SMPs a better candidate for shape memory applications. Among them, thermo‐responsive SMPs can revert to their permanent shape depending on a temperature greater than their polymer transition temperature. Thermo‐responsive SMPs combine semi‐crystalline or elastomeric polymers with improved mechanical and electrical properties. Integrating nanofillers into the polymer elastomer matrices can further enhance these properties, forming shape‐memory polymer nanocomposites (SMPNCs). This review focuses on the basics, design, and classifications of thermo‐responsive SMPs and the characteristics of elastomers and blends of polymers used. Incorporating various nanofillers to get SMPNCs to have improved properties over SMPs is also presented. The importance of Tg (glass transition temperature) and Tm (melting temperature) based SMPs and SMPNCs, various elastomers used, and the methods for preparation like solution casting, melt compounding, in situ polymerization, and their possible future applications are also discussed.

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“…Compared with thermoplastic SMPs, thermoset SMPs have excellent mechanical properties, thermal stability, higher shape fixation and recovery ratios owing to the covalent network structures. Thus, they have a wide range of potential applications in many fields, including aerospace, 7,8 electronic devices, 9–12 intelligent structures, 13–16 smart textiles 17–19 and biomedical applications 20–22 …”

Section: Introductionmentioning

confidence: 99%

Colorless, transparent, and shape memory polyurethane networks with high strength and recyclability

Ma,

Yue,

Huang

et al. 2023

J of Applied Polymer Sci

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The traditional thermoset polyurethanes (PUs) can be recycled through the dynamic carbamate bonds under specific conditions. However, there is limited research on the structural evolution and property changes of these PUs before and after recycling. Herein, we designed and fabricated a thermoset polyurethane network (PCU) using polyhexamethylene carbonate diol (PHMC‐diol) as soft segments, and isophorone diisocyanate (IPDI) and glycerol (GLY) as hard segments. Through careful formulation design, the PCU demonstrated colorless transparency (with up to 86% transmission), shape memory properties, and reprocessing capabilities, all achieved without introducing other dynamic covalent bonds. Furthermore, the PCU exhibited excellent mechanical properties, boasting a tensile strength of 59.2 ± 3.7 MPa and the elongation at break of 674.8 ± 37.3%. Of particular interest, the PCU samples displayed solid‐state plasticity and impressive shape memory performance, with shape fixity and recovery ratios exceeding 90%. Leveraging the combination of solid‐state plasticity and shape memory, the PCU samples demonstrated the ability to achieve arbitrary shape manipulations. Upon recycling, it was observed that the cross‐linking density of the PCU samples decreased, resulting in the formation of byproducts and subsequently leading to a reduction in tensile strength. Nonetheless, the PCU samples prepared in this study exhibit potential as thermadapt shape memory and recyclable materials.

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Shape memory polymer review for flexible artificial intelligence materials of biomedical

Cited by 40 publications

References 92 publications

Recent Advances in the Additive Manufacturing of Stimuli‐Responsive Soft Polymers

Recent Advances in the Additive Manufacturing of Stimuli‐Responsive Soft Polymers

Recent trends in thermo‐responsive elastomeric shape memory polymer nanocomposites

Colorless, transparent, and shape memory polyurethane networks with high strength and recyclability

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