3D printing-directed auxetic Kevlar aerogel architectures with multiple functionalization options

Cheng, Qian; Liu, Yang; Lyu, Jing; Lü, Qiang; Zhang, Xuetong; Song, Wenhui

doi:10.1039/d0ta02590a

Cited by 54 publications

(65 citation statements)

References 55 publications

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“…Biocompatible and bioresorbable polymers can also be used to produce bio-based aerogels. Aerogels are materials synthesized from gels by replacement of the solvent with a gas [ 121 ]. This replacement is carried out, after gelation step, during a supercritical fluid drying process [ 122 ].…”

Section: Printable Hydrogelsmentioning

confidence: 99%

“…These scaffolds can be used for tissue engineering applications due to its nanofibrous structure that are suitable for cell adhesion, proliferation and migration [ 129 ]. However the traditional technologies for aerogel production lack reproducible customization of the 3D structures and do not allow the fabrication of complex structures [ 121 ]. 3D printing of aerogel can overcome the above-mentioned shortcomings, but it requires printable sol or gel with suitable viscosity and mechanical strength.…”

Section: Printable Hydrogelsmentioning

confidence: 99%

“…3D printing of aerogel can overcome the above-mentioned shortcomings, but it requires printable sol or gel with suitable viscosity and mechanical strength. Only a few studies have been reported using 3D printing techniques [ 121 , 130 , 131 , 132 , 133 , 134 , 135 ]. Maleki et al [ 135 ] formulated a hybrid silica–silk fibroin aerogel with an excellent printability in the wet state using a micro-extrusion based 3D printing approach.…”

Section: Printable Hydrogelsmentioning

confidence: 99%

“…Maleki et al [ 135 ] formulated a hybrid silica–silk fibroin aerogel with an excellent printability in the wet state using a micro-extrusion based 3D printing approach. Cheng et al [ 121 ] described a new technique that integrates direct ink writing and freeze-casting with non-toxic solvent-based inks followed by special drying techniques. Taken together, these polymers, biopolymers, or synthetic polymers, could be divided into conventional and advanced (smart) polymers according to their response to environmental [ 3 ].…”

Section: Printable Hydrogelsmentioning

confidence: 99%

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Bioresorbable Polymers: Advanced Materials and 4D Printing for Tissue Engineering

Saska¹,

Pilatti²,

Blay³

et al. 2021

Polymers

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Three-dimensional (3D) printing is a valuable tool in the production of complexes structures with specific shapes for tissue engineering. Differently from native tissues, the printed structures are static and do not transform their shape in response to different environment changes. Stimuli-responsive biocompatible materials have emerged in the biomedical field due to the ability of responding to other stimuli (physical, chemical, and/or biological), resulting in microstructures modifications. Four-dimensional (4D) printing arises as a new technology that implements dynamic improvements in printed structures using smart materials (stimuli-responsive materials) and/or cells. These dynamic scaffolds enable engineered tissues to undergo morphological changes in a pre-planned way. Stimuli-responsive polymeric hydrogels are the most promising material for 4D bio-fabrication because they produce a biocompatible and bioresorbable 3D shape environment similar to the extracellular matrix and allow deposition of cells on the scaffold surface as well as in the inside. Subsequently, this review presents different bioresorbable advanced polymers and discusses its use in 4D printing for tissue engineering applications.

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Section: Printable Hydrogelsmentioning

confidence: 99%

Section: Printable Hydrogelsmentioning

confidence: 99%

Section: Printable Hydrogelsmentioning

confidence: 99%

Section: Printable Hydrogelsmentioning

confidence: 99%

See 2 more Smart Citations

Bioresorbable Polymers: Advanced Materials and 4D Printing for Tissue Engineering

Saska¹,

Pilatti²,

Blay³

et al. 2021

Polymers

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show abstract

“…Nature-mimicking auxetic materials have high energy absorption capabilities that are useful in military protective sandwich plates and civil engineering structures [205]. Multifunctional architected materials made of Kevlar, realized through direct ink writing and freeze casting, possess ultra-low densities and superior mechanical properties [206]. Such structures can be used for aerospace and military applications for better impact protection devices and secondary structures [207].…”

Section: Applicationsmentioning

confidence: 99%

On the application of additive manufacturing methods for auxetic structures: a review

2021

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Auxetic structures are a special class of structural components that exhibit a negative Poisson's ratio (NPR) because of their constituent materials, internal microstructure, or structural geometry. To realize such structures, specialized manufacturing processes are required to achieve a dimensional accuracy, reduction of material wastage, and a quicker fabrication. Hence, additive manufacturing (AM) techniques play a pivotal role in this context. AM is a layer-wise manufacturing process and builds the structure as per the designed geometry with appreciable precision and accuracy. Hence, it is extremely beneficial to fabricate auxetic structures using AM, which is otherwise a tedious and expensive task. In this study, a detailed discussion of the various AM techniques used in the fabrication of auxetic structures is presented. The advancements and advantages put forward by the AM domain have offered a plethora of opportunities for the fabrication and development of unconventional structures. Therefore, the authors have attempted to provide a meaningful encapsulation and a detailed discussion of the most recent of such advancements pertaining to auxetic structures. The article opens with a brief history of the growth of auxetic materials and later auxetic structures. Subsequently, discussions centering on the different AM techniques employed for the realization of auxetic structures are conducted. The basic principle, advantages, and disadvantages of these processes are discussed to provide an in-depth understanding of the current level of research. Furthermore, the performance of some of the prominent auxetic structures realized through these methods is discussed to compare their benefits and shortcomings. In addition, the influences of geometric and process parameters on such structures are evaluated through a comprehensive review to assess their feasibility for the latermentioned applications. Finally, valuable insights into the applications, limitations, and prospects of AM for auxetic structures are provided to enable the readers to gauge the vitality of such manufacturing as a production method.

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Additive Manufacturing of Tunable Metamaterials

Günaydın¹,

Eren²,

Kazancı³

2022

Nanotechnology‐Based Additive Manufacturing

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3D printing-directed auxetic Kevlar aerogel architectures with multiple functionalization options

Abstract: Nanofibrous Kevlar aerogel metamaterials have been made using cryo-3D printing with special drying techniques at a high resolution and low energy cost. They possess outstanding auxetic mechanical properties with a controlled Poisson's ratio and are multi-functionalisable.

Cited by 54 publications

References 55 publications

Bioresorbable Polymers: Advanced Materials and 4D Printing for Tissue Engineering

Bioresorbable Polymers: Advanced Materials and 4D Printing for Tissue Engineering

On the application of additive manufacturing methods for auxetic structures: a review

Additive Manufacturing of Tunable Metamaterials

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