Shape Memory Biomaterials and Their Clinical Applications

Zheng, Yufeng; Liu, Jianing; Lu, Xili; Li, Yibo

doi:10.1007/978-3-030-49206-9_5

Cited by 4 publications

(2 citation statements)

References 161 publications

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“…Other biomaterials such as Shape Memory (SM) alloys and polymers own the unique ability to recover to their original geometry and structure after exposure to an external stimulus, such as temperature, magnetic field, electric field, light or relative humidity [95]. The SM effect and the superelastic mechanical properties of these materials have been widely used in the development of minimally invasive implantable devices and surgical tools.…”

Section: Smart Biomaterialsmentioning

confidence: 99%

Biomaterials and Their Biomedical Applications: From Replacement to Regeneration

Todros¹,

Todesco²,

Bagno³

2021

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The history of biomaterials dates back to the mists of time: human beings had always used exogenous materials to facilitate wound healing and try to restore damaged tissues and organs. Nowadays, a wide variety of materials are commercially available and many others are under investigation to both maintain and restore bodily functions. Emerging clinical needs forced the development of new biomaterials, and lately discovered biomaterials allowed for the performing of new clinical applications. The definition of biomaterials as materials specifically conceived for biomedical uses was raised when it was acknowledged that they have to possess a fundamental feature: biocompatibility. At first, biocompatibility was mainly associated with biologically inert substances; around the 1970s, bioactivity was first discovered and the definition of biomaterials was consequently extended. At present, it also includes biologically derived materials and biological tissues. The present work aims at walking across the history of biomaterials, looking towards the scientific literature published on this matter. Finally, some current applications of biomaterials are briefly depicted and their future exploitation is hypothesized.

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Section: Smart Biomaterialsmentioning

confidence: 99%

Biomaterials and Their Biomedical Applications: From Replacement to Regeneration

Todros¹,

Todesco²,

Bagno³

2021

Processes

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“…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%

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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