Synthesis of Cloisite 30B-acrylamide/acrylic acid nanogel composite for self-healing purposes

Panahi, Parisa; Khorasani, Saied Nouri; Koochaki, Mohammad Sadegh; Dinari, Mohammad; Das, Oisik; Neisiany, Rasoul Esmaeely

doi:10.1016/j.clay.2021.106174

Cited by 11 publications

(4 citation statements)

References 47 publications

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“…[ 9 , 225 , 226 , 227 ]. However, further studies related to self-healing PMCs are required to investigate the effects of size and healing content on the performance of self-healing coating for various applications [ 228 , 229 , 230 ]. Self-healing MMCs are being widely used for compressor blades of aero-engines, anticorrosion coatings, landing gear applications, etc.…”

Section: Fiber-reinforced Epoxy Self-healing Compositesmentioning

confidence: 99%

A Comprehensive Review of Self-Healing Polymer, Metal, and Ceramic Matrix Composites and Their Modeling Aspects for Aerospace Applications

et al. 2022

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Composites can be divided into three groups based on their matrix materials, namely polymer, metal and ceramic. Composite materials fail due to micro cracks. Repairing is complex and almost impossible if cracks appear on the surface and interior, which minimizes reliability and material life. In order to save the material from failure and prolong its lifetime without compromising mechanical properties, self-healing is one of the emerging and best techniques. The studies to address the advantages and challenges of self-healing properties of different matrix materials are very limited; however, this review addresses all three different groups of composites. Self-healing composites are fabricated to heal cracks, prevent any obstructed failure, and improve the lifetime of structures. They can self-diagnose their structure after being affected by external forces and repair damages and cracks to a certain degree. This review aims to provide information on the recent developments and prospects of self-healing composites and their applications in various fields such as aerospace, automobiles etc. Fabrication and characterization techniques as well as intrinsic and extrinsic self-healing techniques are discussed based on the latest achievements, including microcapsule embedment, fibers embedment, and vascular networks self-healing.

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Section: Fiber-reinforced Epoxy Self-healing Compositesmentioning

confidence: 99%

A Comprehensive Review of Self-Healing Polymer, Metal, and Ceramic Matrix Composites and Their Modeling Aspects for Aerospace Applications

et al. 2022

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“…Tissue engineering has taken a novel path for the regeneration of cartilage by using self-healing hydrogels. Self-healing hydrogels offer unique benefits such as self-repairing of damages, retaining structural integrity, and long-term functionality [ 7 , 8 , 9 ]. Despite many similarities between synthetic self-healing hydrogels and the extracellular matrix (ECM), hydrogels have demonstrated some drawbacks such as insufficient mechanical strength, low fracture energies (<15 J m −2 ), low cell viability, etc.…”

Section: Introductionmentioning

confidence: 99%

Advanced Hydrogels for Cartilage Tissue Engineering: Recent Progress and Future Directions

et al. 2021

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Cartilage is a tension- and load-bearing tissue and has a limited capacity for intrinsic self-healing. While microfracture and arthroplasty are the conventional methods for cartilage repair, these methods are unable to completely heal the damaged tissue. The need to overcome the restrictions of these therapies for cartilage regeneration has expanded the field of cartilage tissue engineering (CTE), in which novel engineering and biological approaches are introduced to accelerate the development of new biomimetic cartilage to replace the injured tissue. Until now, a wide range of hydrogels and cell sources have been employed for CTE to either recapitulate microenvironmental cues during a new tissue growth or to compel the recovery of cartilaginous structures via manipulating biochemical and biomechanical properties of the original tissue. Towards modifying current cartilage treatments, advanced hydrogels have been designed and synthesized in recent years to improve network crosslinking and self-recovery of implanted scaffolds after damage in vivo. This review focused on the recent advances in CTE, especially self-healing hydrogels. The article firstly presents the cartilage tissue, its defects, and treatments. Subsequently, introduces CTE and summarizes the polymeric hydrogels and their advances. Furthermore, characterizations, the advantages, and disadvantages of advanced hydrogels such as multi-materials, IPNs, nanomaterials, and supramolecular are discussed. Afterward, the self-healing hydrogels in CTE, mechanisms, and the physical and chemical methods for the synthesis of such hydrogels for improving the reformation of CTE are introduced. The article then briefly describes the fabrication methods in CTE. Finally, this review presents a conclusion of prevalent challenges and future outlooks for self-healing hydrogels in CTE applications.

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“…Therefore, any defects caused by chemical and mechanical factors may provide direct access to corrosive agents to the metal surface. − However, one of the key challenges of the coating technology is how the organic coatings can be formulated for a high-performance anticorrosive system on metal structures. Self-healing systems have been introduced to address the aforementioned shortcomings, while the release of healing agents showed a long-term protective effect. − The incorporation of self-healing agents in organic coatings leads to a high-performance system with excellent protective properties against mechanical damages and corrosive agents. − In these systems, after creating environmental damage, they have the ability to recover their initial properties. − White et al achieved the first practical demonstration in the field of self-healing materials. Self-healing capabilities were demonstrated by embedding encapsulated dicyclopentadiene as a liquid healing agent into a polymer matrix containing dispersed catalysts.…”

Section: Introductionmentioning

confidence: 99%

Encapsulation of Cerium Nitrate within Poly(urea-formaldehyde) Microcapsules for the Development of Self-Healing Epoxy-Based Coating

et al. 2021

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In order to study the release of cerium nitrate in a self-healing epoxy-based coating, poly (urea-formaldehyde) (PUF) microcapsules containing cerium nitrate were synthesized. The effects of healing agent concentration and weight percent of microcapsules in the epoxy resin were studied through the incorporation of microcapsules within an epoxy-based coating. The prepared microcapsules were characterized using thermogravimetric analysis and Fourier transform infrared spectroscopy and confirmed the successful encapsulation of cerium nitrate within PUF capsules. The self-healing performance of the prepared epoxy coating was investigated in 0.6 M NaCl solution using electrochemical impedance spectroscopy (EIS) tests. The EIS results indicated the successful release of encapsulated cerium nitrate from PUF microcapsules once the damage occurred in the epoxy coating, which led to effective self-healing of the epoxy-based coating. The presence of chlorine and cerium ions in the solution led to the precipitation of cerium hydroxides and oxides in the scratched area as a passive layer which hindered the corrosion in the damaged area. In addition, the EIS results showed that the healing performance of the coatings depends on the weight percent of microcapsules and the concentration of the self-healing agent. The highest self-healing performance was achieved for the maximum amount of microcapsule incorporation (10 wt %), while the increase in the microcapsule percent led to a decrease in the adhesion of the coating to the substrate.

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Synthesis of Cloisite 30B-acrylamide/acrylic acid nanogel composite for self-healing purposes

Cited by 11 publications

References 47 publications

A Comprehensive Review of Self-Healing Polymer, Metal, and Ceramic Matrix Composites and Their Modeling Aspects for Aerospace Applications

A Comprehensive Review of Self-Healing Polymer, Metal, and Ceramic Matrix Composites and Their Modeling Aspects for Aerospace Applications

Advanced Hydrogels for Cartilage Tissue Engineering: Recent Progress and Future Directions

Encapsulation of Cerium Nitrate within Poly(urea-formaldehyde) Microcapsules for the Development of Self-Healing Epoxy-Based Coating

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