Microvascular-based self-healing materials

Hansen, Christopher J.

doi:10.1016/b978-1-78242-280-8.00005-4

Cited by 9 publications

(2 citation statements)

References 98 publications

(155 reference statements)

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“…2 This mainly fuels the material world to achieve self-recovered soft-matter, certainly providing a pivotal opportunity to avoid the infinitesimal loss of sophisticated functional devices. The self-healing property is extremely useful for tissue engineering, 3 transportation of bio-stuffs, 4 and synthetic molecular muscles. 5 Powered by these, research with the high-end technical prospect of soft-scaffolds, applicable to the oil industry, 6 sensing purposes, 7 electro-optics and photonics, 8–12 makeup materials, 13 catalysis, 14 drug carriage, 15 and biomedical uses, 16 began its journey decades ago.…”

Section: Introductionmentioning

confidence: 99%

Establishment of different aliphatic amines-based rapid self-healing Mg(OH)₂ metallogels: exploring the morphology, rheology and intriguing semiconducting Schottky diode characteristics

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Establishment of different aliphatic amines-based rapid self-healing Mg(OH)₂ metallogels: exploring the morphology, rheology and intriguing semiconducting Schottky diode characteristics

et al. 2023

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“…Self-healing materials may be classified based on their healing mechanism as either intrinsic or extrinsic self-healing materials. − Intrinsic self-healing materials rely on reversible chemical interactions built into the bulk material. − Most intrinsic self-healing reactions require external intervention in the form of light or heat. Extrinsic self-healing materials rely on the sequestration of healing agents in core–shell microcapsules ,− or microvascular networks, − and have demonstrated the ability to heal autonomously without external intervention.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Mixing of Microvascular Self-Healing Reagents Using Segmented Gas–Liquid Flow

Dean

Krull

et al. 2018

ACS Appl. Mater. Interfaces

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Microvascular self-healing systems have previously been demonstrated to restore large-scale damage and achieve repeated healing of multiple damage events in polymers. However, the healing performance of these systems is often limited because the laminar nature of flow in microchannels results in poor mixing of two-part self-healing reagents. In this paper, we introduce segmented gas-liquid flow (SGLF) to enhance the mixing of reagents in microvascular self-healing systems. In SGLF, discrete liquid slugs containing self-healing reagents are separated by gas bubbles while flowing through a single microchannel. Recirculating streamlines within the liquid slugs can enhance the mixing of miscible liquids such as healing reagents. We investigate the effect of SGLF on mixing and healing for a two-stage chemistry used to restore large-scale damage in thermoset polymers. Additionally, we employ SGLF to deliver an epoxy-thiol chemistry, enabling the repeated recovery of fracture toughness in glass fiber-reinforced composites. In both systems, the mixing of healing agents delivered by SGLF is enhanced compared to alternative microvascular delivery strategies. For the two-stage chemistry, SGLF increases the maximum damage size that can be healed by 25% compared to laminar single-phase flow. Furthermore, there are concomitant increases in the extent of polymerization and the mechanical properties of the restored material, including a fivefold increase in the peak load sustained during a push-out test. For the epoxy-thiol chemistry, SGLF enables multiple healing cycles with healing efficiency above 100%. On the basis of these results, we envision that SGLF could improve performance for a variety of microvascular self-healing systems with different host materials, damage modes, and healing chemistries.

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Carbon fiber composites with 2D microvascular networks for battery cooling

Pety

Tan

Najafi

et al. 2017

International Journal of Heat and Mass Transfer

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Microvascular-based self-healing materials

Cited by 9 publications

References 98 publications

Establishment of different aliphatic amines-based rapid self-healing Mg(OH)₂ metallogels: exploring the morphology, rheology and intriguing semiconducting Schottky diode characteristics

Establishment of different aliphatic amines-based rapid self-healing Mg(OH)₂ metallogels: exploring the morphology, rheology and intriguing semiconducting Schottky diode characteristics

Enhanced Mixing of Microvascular Self-Healing Reagents Using Segmented Gas–Liquid Flow

Carbon fiber composites with 2D microvascular networks for battery cooling

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Microvascular-based self-healing materials

Cited by 9 publications

References 98 publications

Establishment of different aliphatic amines-based rapid self-healing Mg(OH)2 metallogels: exploring the morphology, rheology and intriguing semiconducting Schottky diode characteristics

Establishment of different aliphatic amines-based rapid self-healing Mg(OH)2 metallogels: exploring the morphology, rheology and intriguing semiconducting Schottky diode characteristics

Enhanced Mixing of Microvascular Self-Healing Reagents Using Segmented Gas–Liquid Flow

Carbon fiber composites with 2D microvascular networks for battery cooling

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Product

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Establishment of different aliphatic amines-based rapid self-healing Mg(OH)₂ metallogels: exploring the morphology, rheology and intriguing semiconducting Schottky diode characteristics

Establishment of different aliphatic amines-based rapid self-healing Mg(OH)₂ metallogels: exploring the morphology, rheology and intriguing semiconducting Schottky diode characteristics