4D printing of tracheal scaffold using shape-memory polymer composite

Pandey, Harsh; Mohol, Shubham Shankar; Kandi, Rudranarayan

doi:10.1016/j.matlet.2022.133238

Cited by 25 publications

(5 citation statements)

References 11 publications

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“…The spring was deformed and held in a compressed structure, and its original shape was restored in 20 s when it was immersed in a 140 °C oil bath. Compared with PU, trimethylene carbonate, PLA, and PCL, a complete recovery and rapid change in large volumes were demonstrated for the designed sample. More importantly, this material not only did not require complex postprocessing such as solvent replacement and solvent volatilization but also has the deformation ability and recovery ability in a high-temperature environment.…”

Section: Resultsmentioning

confidence: 99%

Toward 4D Printing of Shape Memory Polymers Based on Polyaryletherketone/NVP/PEGDA through Molecular Engineering and Direct Ink Writing 3D Printing

Gao,

Gong,

Cao

et al. 2023

ACS Appl. Polym. Mater.

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Polyaryletherketone (PAEK), an engineering plastic with exceptional mechanical properties and a high glass transition temperature, can be tailored with various properties to meet the multiple requirements of aerospace applications. However, it remains a challenge to 3D print PAEK with good properties. Herein, a direct ink writing (DIW) 3D printable PAEK ink has been developed, and the yielded PAEK parts possess high tensile strength and excellent shape memory properties. The incorporation of N-vinyl-2-pyrrolidone (NVP) and polyethylene glycol diacrylate PEGDA into PAEK oligomers (PAEKOs) facilitated their versatility as diluents or reactive functional monomers. This characteristic enabled random cross-linking through photoinitiator exposure for the formation of block copolymers, establishing the essential stationary and reversible phases needed for shape memory capabilities. The photocured PAEK demonstrated excellent comprehension performances, including an outstanding tensile strength (42.6 MPa), thermal stability (T d -246 °C), shape fixation ratio (>93%), and shape recovery ratio (>100%). Furthermore, PAEK with a greater shape memory effect was utilized as an actuator to realize gripping and releasing at high temperatures (140 °C). This study therefore provides an emerging strategy to fabricate shape memory components for challenging environments using DIW technology. This approach also holds promise for implementation in systems beyond PAEK which have typically been difficult to print.

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Section: Resultsmentioning

confidence: 99%

Toward 4D Printing of Shape Memory Polymers Based on Polyaryletherketone/NVP/PEGDA through Molecular Engineering and Direct Ink Writing 3D Printing

Gao,

Gong,

Cao

et al. 2023

ACS Appl. Polym. Mater.

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show abstract

“…This property enables the fabrication of 4D-printed structures that change their shape or configuration when subjected to the appropriate trigger [21][22][23]. For instance, an SMP-based 4D-printed scaffold can adapt its shape to better fit the tracheal structure when exposed to body heat, potentially improving the effectiveness and precision of tracheal repair procedures [24].…”

Section: Smart Materials For 4d Printingmentioning

confidence: 99%

4D Printing in Biomedical Engineering: Advancements, Challenges, and Future Directions

Ramezani

Ripin

2023

JFB

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4D printing has emerged as a transformative technology in the field of biomedical engineering, offering the potential for dynamic, stimuli-responsive structures with applications in tissue engineering, drug delivery, medical devices, and diagnostics. This review paper provides a comprehensive analysis of the advancements, challenges, and future directions of 4D printing in biomedical engineering. We discuss the development of smart materials, including stimuli-responsive polymers, shape-memory materials, and bio-inks, as well as the various fabrication techniques employed, such as direct-write assembly, stereolithography, and multi-material jetting. Despite the promising advances, several challenges persist, including material limitations related to biocompatibility, mechanical properties, and degradation rates; fabrication complexities arising from the integration of multiple materials, resolution and accuracy, and scalability; and regulatory and ethical considerations surrounding safety and efficacy. As we explore the future directions for 4D printing, we emphasise the need for material innovations, fabrication advancements, and emerging applications such as personalised medicine, nanomedicine, and bioelectronic devices. Interdisciplinary research and collaboration between material science, biology, engineering, regulatory agencies, and industry are essential for overcoming challenges and realising the full potential of 4D printing in the biomedical engineering landscape.

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“…Upon reheating above T g , the box recovered to its folded shape [197]. In addition to the thermoset SMPs, thermoplastic SMPs, such as polylactic acid (PLA)-based inks [198], poly (D,I-lactide-cotrimethylene carbonate) (PLMC) [199], polyurethane and polyethylene oxide (PEO) [200], have demonstrated actuated behaviours after DIW printing. Wang et al synthesised waterborne shape memory polyurethane (SMPU) mixed with polyethylene oxide (PEO) or gelatin in water to enhance the viscosity of the ink.…”

Section: Commercial Bisphenol Epoxy Diwmentioning

confidence: 99%

Liquid-Based 4D Printing of Shape Memory Nanocomposites: A Review

Alsaadi

Hinchy

McCarthy

et al. 2023

JMMP

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Significant advances have been made in recent years in the materials development of liquid-based 4D printing. Nevertheless, employing additive materials such as nanoparticles for enhancing printability and shape memory characteristics is still challenging. Herein, we provide an overview of recent developments in liquid-based 4D printing and highlights of novel 4D-printable polymeric resins and their nanocomposite components. Recent advances in additive manufacturing technologies that utilise liquid resins, such as stereolithography, digital light processing, material jetting and direct ink writing, are considered in this review. The effects of nanoparticle inclusion within liquid-based resins on the shape memory and mechanical characteristics of 3D-printed nanocomposite components are comprehensively discussed. Employing various filler-modified mixture resins, such as nanosilica, nanoclay and nanographene, as well as fibrous materials to support various properties of 3D printing components is considered. Overall, this review paper provides an outline of liquid-based 4D-printed nanocomposites in terms of cutting-edge research, including shape memory and mechanical properties.

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4D printing of tracheal scaffold using shape-memory polymer composite

Cited by 25 publications

References 11 publications

Toward 4D Printing of Shape Memory Polymers Based on Polyaryletherketone/NVP/PEGDA through Molecular Engineering and Direct Ink Writing 3D Printing

Toward 4D Printing of Shape Memory Polymers Based on Polyaryletherketone/NVP/PEGDA through Molecular Engineering and Direct Ink Writing 3D Printing

4D Printing in Biomedical Engineering: Advancements, Challenges, and Future Directions

Liquid-Based 4D Printing of Shape Memory Nanocomposites: A Review

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