NDLI: Repeated self-healing of nano and micro scale cracks in epoxy based composites by tri-axial electrospun fibers including different healing agents

Content Provider	Royal Society of Chemistry (RSC)
Author	Menceloglu, Yusuf Okan, Burcu Saner Yildiz, Mehmet Zanjani, Jamal Seyyed Monfared Letofsky-Papst, Ilse
Copyright Year	2015
Abstract	Multi-walled healing fibers with a novel architecture are fabricated through a direct, one-step tri-axial electrospinning process to encapsulate different healing agents inside the fibers with two distinct protective walls. Self healing systems based on ring opening metathesis polymerization (ROMP) and an amine–epoxy reaction are redesigned by utilizing these tri-axial fibers. In ROMP, Grubbs' catalysts are integrated in the outer wall of the fibers instead of the composite matrix to reduce the catalyst amount and prevent its deactivation during composite production. In the amine–epoxy healing system, epoxy resin and an amine-based curing agent are encapsulated separately by a multi-axial electrospinning. The presence of an extra layer facilitates the encapsulation of amine based healing agents with a highly active nature and extends the efficiency and life-time of the healing functionality. These new self-healing designs provide repeated self healing ability to preserve the mechanical properties of the composite by repairing micro and nano scale cracks under high loadings.
Starting Page	73133
Ending Page	73145
Page Count	13
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	5
Issue Number	89
Journal	RSC Advances
DOI	10.1039/c5ra15483a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Ring-opening metathesis polymerisation Epoxy Resin Electrospinning Grubbs Grubbs' catalyst Composite material
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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Repeated self-healing of nano and micro scale cracks in epoxy based composites by tri-axial electrospun fibers including different healing agents

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