Self-Healing of Polymers and Polymer Composites

This review is devoted to the description of methods for the self-healing of polymers, polymer composites, and coatings. The self-healing of damages that occur during the operation of the corresponding structures makes it possible to extend the service life of the latter, and in this case, the probl...

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Bibliographic Details
Published in:Polymers 2022-12, Vol.14 (24), p.5404
Main Authors: Irzhak, Vadim I, Uflyand, Igor E, Dzhardimalieva, Gulzhian I
Format: Article
Language:English
Subjects:
Carbon
Chemical bonds
Coatings
Composite materials
Cracks
Crosslinking
Glass fibers
Heat
Localization
Methods
Nonrenewable resources
Polymer industry
Polymer matrix composites
Polymeric composites
Polymers
Review
Self healing materials
Service life
Shear strength
Thermoplastics
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Summary:This review is devoted to the description of methods for the self-healing of polymers, polymer composites, and coatings. The self-healing of damages that occur during the operation of the corresponding structures makes it possible to extend the service life of the latter, and in this case, the problem of saving non-renewable resources is simultaneously solved. Two strategies are considered: (a) creating reversible crosslinks in the thermoplastic and (b) introducing a healing agent into cracks. Bond exchange reactions in network polymers (a) proceed as a dissociative process, in which crosslinks are split into their constituent reactive fragments with subsequent regeneration, or as an associative process, the limiting stage of which is the interaction of the reactive end group and the crosslink. The latter process is implemented in vitrimers. Strategy (b) is associated with the use of containers (hollow glass fibers, capsules, microvessels) that burst under the action of a crack. Particular attention is paid to self-healing processes in metallopolymer systems.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym14245404