Recent advances in 3D printing of tough hydrogels: A review

Composites Part B Engineering, Journal Year: 2022, Volume and Issue: 238, P. 109895 - 109895

Published: April 13, 2022

Language: Английский

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Poly(vinyl alcohol) Hydrogels: The Old and New Functional Materials

International Journal of Polymer Science, Journal Year: 2021, Volume and Issue: 2021, P. 1 - 16

Published: Nov. 30, 2021

Hydrogels have three-dimensional network structures, high water content, good flexibility, biocompatibility, and stimulation response, which provided a unique role in many fields such as industry, agriculture, medical treatment. Poly(vinyl alcohol) PVA hydrogel is one of the oldest composite hydrogels. It has been extensively explored due to its chemical stability, nontoxic, biological aging resistance, water-absorbing capacity, easy processing. PVA-based hydrogels widely investigated drug carriers, articular cartilage, wound dressings, tissue engineering, other intelligent materials, self-healing shape-memory supercapacitors, sensors, fields. In this paper, discovery, development, preparation, modification methods, applications functionalized are reviewed, their potential future research trends also prospected.

Language: Английский

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4D printing of polymers: Techniques, materials, and prospects

Progress in Polymer Science, Journal Year: 2022, Volume and Issue: 126, P. 101506 - 101506

Published: Jan. 5, 2022

Language: Английский

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Digital Light Processing 3D Printing of Tough Supramolecular Hydrogels with Sophisticated Architectures as Impact‐Absorption Elements

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(34)

Published: June 27, 2022

Processing tough hydrogels into sophisticated architectures is crucial for their applications as structural elements. However, Digital Light (DLP) printing of challenging because the low-speed gelation and toughening process. Described here a simple yet versatile system suitable DLP to form hydrogel architectures. The aqueous precursor consists commercial photoinitiator, acrylic acid, zirconium ion (Zr4+ ), readily forming metallo-supramolecular under digital light in situ formation carboxyl-Zr4+ coordination complexes. high-stiffness antiswelling properties as-printed gel enable high-efficiency high-fidelity constructs. Furthermore, swelling-induced morphing also achieved by encoding structure gradients during with grayscale light. Mechanical printed are further improved after incubation water due variation local pH rearrangement complex. swelling-enhanced stiffness affords shape fixation ability manual deformations, thereby provides an additional avenue more complex configurations. These used devise impact-absorption element or high-sensitivity pressure sensor proof-of-concept examples. This work should merit engineering other gels extend scope diverse fields.

Language: Английский

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Harnessing 4D Printing Bioscaffolds for Advanced Orthopedics

Small, Journal Year: 2022, Volume and Issue: 18(36)

Published: Jan. 20, 2022

Abstract The development of programmable functional biomaterials makes 4D printing add a new dimension, time ( t ), based on 3D structures x , y z therefore, printed constructs could transform their morphology or function over in response to environmental stimuli. Nowadays, highly efficient bone defect repair remains challenging clinics. Combining biomaterials, living cells, and bioactive factors, bioprinting provides greater potential for constructing dynamic, personalized, precise tissue engineering scaffolds by complex structure formation maturation. Therefore, has been regarded as the next generation technology. This review focuses its advantages orthopedics. applications different smart strategies are briefly introduced. Furthermore, one summarizes recent advancements engineering, uncovering addressed unaddressed medical requirements. In addition, current challenges future perspectives further discussed, which will offer more inspiration about clinical transformation this emerging technology regeneration.

Language: Английский

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4D printing: Technological developments in robotics applications

Sensors and Actuators A Physical, Journal Year: 2022, Volume and Issue: 343, P. 113670 - 113670

Published: June 10, 2022

Language: Английский

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4D Printing: Technological and Manufacturing Renaissance

Macromolecular Materials and Engineering, Journal Year: 2022, Volume and Issue: 307(8)

Published: April 5, 2022

Abstract Shape‐memory materials (SMMs) combined with 3D printing to develop dynamic and adaptive products which are responsive physical, chemical, or biological stimuli. These structures categorized into 4D‐printed (4DPed) change their shape properties over time dimension. 4D printing, a novel, multidisciplinary, futuristic technology is expanding its utilization in different applications including healthcare, space, textile, soft robotics, defence, sports, aerospace, automotive sectors. This review article focuses on the recent insightful developments 4DP of SMMs especially shape‐memory polymers. also integrates technologies, programming for specific actuating mechanisms, most 4DPed structures/products. Future perspectives countless opportunities this outlined address current challenges will help evolve promote novel as mainstream manufacturing approach developing real‐world myriad engineering progresses beyond imagination, since inception technological renaissance material science field. profoundly impact daily human life future.

Language: Английский

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Self-Bonded Hydrogel Inverse Opal Particles as Sprayed Flexible Patch for Wound Healing

ACS Nano, Journal Year: 2022, Volume and Issue: 16(2), P. 2640 - 2650

Published: Jan. 24, 2022

Wound healing is an important issue for regenerative medicine. Attempts in this area tend to develop functional wound patches promote the healing. Here, we present self-bonded hydrogel inverse opal particles as sprayed flexible patch Such were fabricated by infusing drugs-loaded gelatin (GT) and carrageenan (CG) pregel into scaffolds, which composed of biocompatible hyaluronic acid methacryloyl (HAMA) (GelMA) with graphene oxide quantum dots (GO QDs) doping. Due photothermal conversion capability GO QDs temperature reversible phase-changing performance GT/CG, hybrid could undergo GT/CG liquid transformation under near-infrared (NIR) irradiation, made them adhere each other finally form a patch. Following phase-change hydrogel, encapsulated drugs also controllably released from scaffold. As scaffolds maintained, their drug release induced refractive index changes be detected visual structural color shifting, utilized monitor delivery processes. Based on these features, have demonstrated that particles, administered spray, applied tissue monitoring. These results indicate potential value multifunctional clinical applications.

Language: Английский

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Hydrogels for bioinspired soft robots

Progress in Polymer Science, Journal Year: 2024, Volume and Issue: 150, P. 101791 - 101791

Published: Jan. 18, 2024

Language: Английский

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Stimuli‐responsive fluorescent hydrogels: Strategies and applications

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(1)

Published: Jan. 12, 2024

Abstract Stimuli‐responsive fluorescent hydrogels are three‐dimensional networked polymeric materials with tunable luminescence and dynamic properties, which play an important role as a water‐rich soft material in the fields of information encryption, bionic actuation, bioimaging, environmental monitoring, luminescent materials. Compared conventional hydrogels, their unique properties allow visualization microscopic dynamics within polymer network. By rational inclusion motifs, such photoswitches, AIEgens, lanthanide complexes, host–guest these endowed tunability emission, shape, phase time space response to effectors. In this review, we summarize fabrication strategies that mainly used by recently reported stimuli‐responsive applications

Language: Английский

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