4D printing for biomedical applications

3D printed tracheal stent based on light-responsive shape memory composites (SMC) has a good application prospect due to its remote, non-contact drive and the ability to adapt to complex environments. This paper detailed the fabrication, characterization, and infrared light (IR) actuating shape memory effects of the SMC based on the thermal polyurethane (TPU)/poly(caprolactone) (PCL)/polyaniline (PANI)/composites. Herein, the experiments have explored the preparation and process parameters and 3D printing properties (e.g., filament-molding temperature, 3D printing temperature, and speed) on the premise of smooth printing of the composites. The thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy analysis (FTIR), differential scanning calorimetry analysis (DSC), micro-morphology, and tensile testing was operated to characterize the properties of the TPU6/PCL4/PANI composites. Additionally, shape memory performance has shown that the shape memory fixation rate of the prepared IR-responsive SMC was about 99%, and the shape recovery ratio was approximately 95%. Therefore, this work customized the tracheal scaffold based on TPU6/PCL4/PANI composites by 3D printing technology (FDM), which possesses excellent IR-triggered remote-controlling structure deformation performance. Moreover, by collaborating with minimally invasive surgery, 3D printed IR-actuating SMC structures can expand the application scope in the biomedical field and provide a new way for personalized implantable medical devices.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

4D printing for biomedical applications

Abstract: While three-dimensional (3D) printing excels at fabricating static constructs, it fails to emulate the dynamic behavior of native tissues or the temporal programmability desired for medical devices. Four-dimensional (4D) printing...

Cited by 4 publications

References 299 publications

Current multi-scale biomaterials for tissue regeneration following spinal cord injury

Current multi-scale biomaterials for tissue regeneration following spinal cord injury

A 4D printed nanoengineered super bioactive hydrogel scaffold with programmable deformation for potential bifurcated vascular channel construction

Infrared light responsive shape memory tracheal stent based on TPU6/PCL4/PANI composites

Contact Info

Product

Resources

About