Room‐Temperature Self‐Healing Soft Composite Network with Unprecedented Crack Propagation Resistance Enabled by a Supramolecular Assembled Lamellar Structure

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(26)

Published: March 25, 2023

Soft self-healing materials are compelling candidates for stretchable devices because of their excellent compliance, extensibility, and self-restorability. However, most existing soft polymers suffer from crack propagation irreversible fatigue failure due to easy breakage dynamic amorphous, low-energy polymer networks. Herein, inspired by distinct structure-property relationship biological tissues, a supramolecular interfacial assembly strategy preparing composites with unprecedented resistance is proposed structurally engineering preferentially aligned lamellar structures within superstretchable poly(urea-ureathane) matrix (which elongated 24 750× its original length). Such design affords world-record fracture energy (501.6 kJ m-2 ), ultrahigh threshold (4064.1 J outstanding elastic restorability (dimensional recovery 13 times elongation), preserving low modulus (1.2 MPa), high stretchability (3200%), room-temperature efficiency (97%). Thereby, the resultant composite represents best kind even surpasses tissues. The 2D transition-metal carbide/carbonitride (MXene) structure also leads relatively in-plane thermal conductivity, enabling as thermoconductive skins applied in joints robotics dissipation. present work illustrates viable approach how autonomous self-healing, tolerance, can be merged future material design.

Language: Английский

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Stimuli-Responsive Polymer-Based Nanosystems for Cancer Theranostics

ACS Nano, Journal Year: 2023, Volume and Issue: 17(23), P. 23223 - 23261

Published: Dec. 2, 2023

Stimuli-responsive polymers can respond to internal stimuli, such as reactive oxygen species (ROS), glutathione (GSH), and pH, biological enzymes, external lasers ultrasound, etc., by changing their hydrophobicity/hydrophilicity, degradability, ionizability, thus have been widely used in biomedical applications. Due the characteristics of tumor microenvironment (TME), stimuli-responsive that cater specifically TME extensively prepare smart nanovehicles for targeted delivery therapeutic diagnostic agents tissues. Compared conventional drug nanosystems, TME-responsive nanosystems many advantages, high sensitivity, broad applicability among different tumors, functional versatility, improved biosafety. In recent years, a great deal research has devoted engineering efficient polymeric significant improvement made both cancer diagnosis therapy. this review, we summarize some advances involving use polymer nanocarriers delivery, imaging, therapy, theranostics. Various chemical stimuli will be described context nanosystems. Accordingly, groups responsible responsiveness strategies incorporate these into discussed detail. With on topic expending at fast pace, innovative concepts, sequential cascade release, NIR-II multifunctional formulations, emerged popular enhanced performance, which also included here with up-to-date illustrations. We hope review offer valuable insights selection optimization help accelerate future applications treatment.

Language: Английский

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Advances in 3D printing for polymer composites: A review

InfoMat, Journal Year: 2024, Volume and Issue: 6(6)

Published: June 1, 2024

Abstract The potential of three‐dimensional (3D) printing technology in the fabrication advanced polymer composites is becoming increasingly evident. This review discusses latest research developments and applications 3D composites. First, it focuses on optimization technology, that is, by upgrading equipment or components adjusting parameters, to make them more adaptable processing characteristics improve comprehensive performance products. Second, printable novel consumables for composites, which mainly include new filaments, inks, photosensitive resins, powders, introducing unique properties different ways apply printing. Finally, preparation functional (such as thermal conductivity, electromagnetic interference shielding, biomedicine, self‐healing, environmental responsiveness) are explored, with a focus distribution fillers influence topological shapes printed aim this deepen understanding convergence between anticipate future trends applications. image

Language: Английский

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Self-healable functional polymers and polymer-based composites

Progress in Polymer Science, Journal Year: 2023, Volume and Issue: 144, P. 101724 - 101724

Published: July 5, 2023

Language: Английский

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Aromatic‐Free Polymers Based All‐Organic Dielectrics with Breakdown Self‐Healing for High‐Temperature Capacitive Energy Storage

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(48)

Published: Sept. 29, 2023

High-temperature dielectric polymers are becoming increasingly desirable for capacitive energy storage in renewable utilization, electrified transportation, and pulse power systems. Current typically require robust aromatic molecular frameworks to ensure structural thermal stability at elevated temperatures. Nevertheless, the introduction of units compromises electrical insulation owing pronounced π─π interactions that facilitate electron transport eliminate breakdown self-healing property their high carbon content. Herein, an aromatic-free polynorborne copolymer exhibiting conductivity-two orders magnitude lower than state-of-the-art polyetherimide-at temperatures electric fields its large bandgap (≈4.64 eV) short hopping conduction distance (≈0.63 nm) is described. Density functional theory calculations demonstrate can effectively suppress excitation high-field valence electrons. Furthermore, incorporation trace semiconductors results discharge density (3.73 J cm-3 ) charge-discharge efficiency (95% 150 °C), outperforming existing high-temperature polymers. The excellent capability film further demonstrates potential use capacitors capable continuous operation under extreme conditions.

Language: Английский

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Self-healing polymers through hydrogen-bond cross-linking: synthesis and electronic applications

Materials Horizons, Journal Year: 2023, Volume and Issue: 10(10), P. 4000 - 4032

Published: Jan. 1, 2023

Classification of H-bonding-based SHPs and their electronic applications.

Language: Английский

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Unifying and Suppressing Conduction Losses of Polymer Dielectrics for Superior High‐Temperature Capacitive Energy Storage

Advanced Materials, Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 15, 2023

Superior high-temperature capacitive performance of polymer dielectrics is critical for the modern film capacitor demanded in harsh-environment electronic and electrical systems. Unfortunately, degrades rapidly at elevated temperatures owing to exponential growth conduction loss. The loss mainly composed electrode bulk-limited conduction. Herein, contribution surface bulk factors unified loss, thoroughly suppressed. experimental results demonstrate that polar oxygen-containing groups on can act as charge trap sites immobilize injected charges from electrode, which turn establish a built-in field weaken external electric augment injection barrier height. Wide bandgap aluminum oxide (Al2 O3 ) nanoparticle fillers serve deep traps constrain transport or thermally activated phase. From this, 200 °C, discharged energy density with discharge-charge efficiency 90% increases by 1058.06% 0.31 J cm-3 pristine polyetherimide 3.59 irradiated composite film. principle simultaneously inhibiting losses could be easily extended other performance.

Language: Английский

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Advances in bio-integrated wearable and implantable optoelectronic devices for cardiac healthcare

Cyborg and Bionic Systems, Journal Year: 2024, Volume and Issue: 5

Published: Jan. 1, 2024

With the prevalence of cardiovascular disease, it is imperative that medical monitoring and treatment become more instantaneous comfortable for patients. Recently, wearable implantable optoelectronic devices can be seamlessly integrated into human body to enable physiological in an imperceptible spatiotemporally unconstrained manner, opening countless possibilities intelligent healthcare paradigm. To achieve biointegrated cardiac healthcare, researchers have focused on novel strategies construction flexible/stretchable systems. Here, we overview progress flexible stretchable optoelectronics devices. Firstly, device design addressed, including mechanical design, interface adhesion, encapsulation strategies. Next, practical applications monitoring, optogenetics, nongenetic stimulation are presented. Finally, outlook systems discussed.

Language: Английский

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Liquid Metal–Polymer Conductor-Based Conformal Cyborg Devices

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(5), P. 2081 - 2137

Published: Feb. 23, 2024

Gallium-based liquid metal (LM) exhibits exceptional properties such as high conductivity and biocompatibility, rendering it highly valuable for the development of conformal bioelectronics. When combined with polymers, metal–polymer conductors (MPC) offer a versatile platform fabricating cyborg devices, enabling functions sensing, restoration, augmentation within human body. This review focuses on synthesis, fabrication, application MPC-based devices. The synthesis functional materials based LM fabrication techniques devices are elucidated. provides comprehensive overview encompassing their applications in sensing diverse signals, therapeutic interventions, augmentation. objective this is to serve resource that bridges gap between potential biomedical applications.

Language: Английский

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Practical Applications of Self‐Healing Polymers Beyond Mechanical and Electrical Recovery

Advanced Science, Journal Year: 2024, Volume and Issue: 11(16)

Published: Feb. 15, 2024

Self-healing polymeric materials, which can repair physical damage, offer promising prospects for protective applications across various industries. Although prolonged durability and resource conservation are key advantages, focusing solely on mechanical recovery may limit the market potential of these materials. The unique properties self-healing polymers, such as interfacial reduction, seamless connection lines, temperature/pressure responses, phase transitions, enable a multitude innovative applications. In this perspective, diverse polymers beyond their traditional strength emphasized in sectors food packaging, damage-reporting, radiation shielding, acoustic conservation, biomedical monitoring, tissue regeneration is explored. With regards to commercialization challenges, including scalability, robustness, performance degradation under extreme conditions, strategies overcome limitations promote successful industrialization discussed. Furthermore, impacts materials future research directions, encompassing environmental sustainability, advanced computational techniques, integration with emerging technologies, tailoring specific examined. This perspective aims inspire interdisciplinary approaches foster adoption real-life settings, ultimately contributing development next-generation

Language: Английский

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