Selective Laser Sintering 4D Printing of Dynamic Cross-linked Polyurethane Containing Diels–Alder Bonds

Ouyang, Hao; Li, Xue; Lu, Xili; Xia, Hesheng

doi:10.1021/acsapm.2c00565

Cited by 30 publications

(14 citation statements)

References 66 publications

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“…[269,270] In SLS, the high laser beam is bombarded onto the powder bed through a predetermined pathway and is melted partially. [271] However, in SLM powder particles are melted completely by the striking beam. SLS is suitable for the 3D printing of polymeric composites, while SLM is best suited to fabricate complex metal parts.…”

Section: Powder-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: Powder-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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“…[140] Expectedly, the printed objects also showed the capability of self-healing and recyclability. With the versatile toolbox of dynamic covalent chemistry, Ouyang et al [141] also investigated functional or intelligent SLS printing materials. In this study, polyurethane systems were modified with dynamic covalent bonds (Figure 27a).…”

Section: Dcps For Slsmentioning

confidence: 99%

Recent Progress on the 3D Printing of Dynamically Cross‐Linked Polymers

Jia,

Xie,

Qian

et al. 2023

Adv Funct Materials

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The utilization of dynamic cross‐linking represents a highly promising approach in addressing the escalating issues of plastic pollution and fossil resource consumption. Despite being extensively investigated over the past decade, various dynamically cross‐linked polymers (DCPs) predominantly remain confined to the realm of academic research. To serve as a valuable material for practical application, advanced processing is always essential for all kinds of materials. 3D printing (3DP) enables the creation of intricate shapes layer‐by‐layer without relying on molds, thus the integration of 3DP techniques with DCPs holds significant potential to enhance and expand the practical applicability of DCPs. Here, an overview of the fundamental principles underlying DCPs compatible 3DP techniques are provided, namely photocuring 3DP, extrusion‐based 3DP, and laser sintering‐based 3DP. Additionally, a comprehensive summary of representative research works that specifically focus on the application of DCPs in each respective 3DP technique is presented. The performance and dynamic mechanism involved in the corresponding printing process are thoroughly discussed and comprehensively reviewed. Finally, the existing challenges and issues pertaining to further enhancing 3D printability, performance, efficiency, etc., are extensively deliberated upon, while proposing potential directions to address these concerns.

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“…Sun et al investigated the 3D printing of PDMS in a powder-based approach, by capping the PDMS chains with pyrazole urea dynamic bonds, exhibiting good self-healing properties and 6 sintering [40]. Thermoreversible Diels-Alder bonds have been recently reported by Ouyang et al to allow the SLS printing of shape-memory and self-healing NIR-responsive composites [41].…”

Section: Introductionmentioning

confidence: 99%