Journal ArticleDOI
A review of vascular networks for self-healing applications
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TLDR
This review intends to provide a comprehensive overview of the current progress and limitations of the design approaches, fabrication methods, healing mechanisms, and relevant applications of embedded vascular networks.Abstract:
Increasing awareness for sustainability has led to the development of smart self-healing materials, which can extend the service life and improve safety without human intervention Vascular networks are observed in biological systems, such as leaf venation and blood vascular systems, and provide inspiration for self-healing mechanisms in engineered systems Embedding a vascular network in a host material has the advantage of addressing varying magnitudes of damage and allowing for an indefinite replenishment of the healing agent, which are current limitations of intrinsic and capsule-based self-healing systems These networks are demonstrated in polymer and composite materials, with fabrication methods including removal of sacrificial elements, electrospinning, and an array of additive manufacturing (AM) techniques Advances in AM allow more complex network configurations to be realized that optimize fluid distribution and healing potential This review intends to provide a comprehensive overview of the current progress and limitations of the design approaches, fabrication methods, healing mechanisms, and relevant applications of embedded vascular networks Additionally, significant research gaps and future research directions for vascular self-healing materials are describedread more
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References
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Journal ArticleDOI
Electrospinning of Nanofibers: Reinventing the Wheel?†
Dan Li,Younan Xia +1 more
TL;DR: An overview of electrospinning can be found in this article, where the authors focus on progress achieved in the last three years and highlight some potential applications associated with the remarkable features of electro-spun nanofibers.
Journal ArticleDOI
Electrospinning: A Fascinating Method for the Preparation of Ultrathin Fibers
TL;DR: Electrospinning is a highly versatile method to process solutions or melts, mainly of polymers, into continuous fibers with diameters ranging from a few micrometers to a few nanometers, applicable to virtually every soluble or fusible polymer.
Journal ArticleDOI
Autonomic healing of polymer composites
Scott R. White,Nancy R. Sottos,Philippe H. Geubelle,Jeffrey S. Moore,Jeffrey S. Moore,Michael R. Kessler,Suresh R. Sriram,Suresh R. Sriram,Eric Brown,S. Viswanathan +9 more
TL;DR: A structural polymeric material with the ability to autonomically heal cracks is reported, which incorporates a microencapsulated healing agent that is released upon crack intrusion and polymerization of the healing agent is triggered by contact with an embedded catalyst, bonding the crack faces.
Journal ArticleDOI
3D printing of polymer matrix composites: A review and prospective
TL;DR: In this paper, the authors give an overview on 3D printing techniques of polymer composite materials and the properties and performance of 3D printed composite parts as well as their potential applications in the fields of biomedical, electronics and aerospace engineering.
Journal ArticleDOI
Self-healing materials with microvascular networks
TL;DR: A self-healing system capable of autonomously repairing repeated damage events via a three-dimensional microvascular network embedded in the substrate is reported, opening new avenues for continuous delivery of healing agents for self-repair as well as other active species for additional functionality.