Self-healing materials with microvascular networks

Kathleen S. Toohey; Nancy R. Sottos; Jennifer A Lewis; Jeffrey S. Moore; Scott R White

doi:10.1038/nmat1934

Self-healing materials with microvascular networks

Kathleen S. Toohey, Nancy R. Sottos, Jennifer A Lewis, Jeffrey S. Moore, Scott R White

Research output: Contribution to journal › Article › peer-review

Abstract

Self-healing polymers composed of microencapsulated healing agents exhibit remarkable mechanical performance and regenerative ability, but are limited to autonomic repair of a single damage event in a given location. Self-healing is triggered by crack-induced rupture of the embedded capsules; thus, once a localized region is depleted of healing agent, further repair is precluded. Re-mendable polymers can achieve multiple healing cycles, but require external intervention in the form of heat treatment and applied pressure. Here, we report a self-healing system capable of autonomously repairing repeated damage events. Our bio-inspired coating-substrate design delivers healing agent to cracks in a polymer coating via a three-dimensional microvascular network embedded in the substrate. Crack damage in the epoxy coating is healed repeatedly. This approach opens new avenues for continuous delivery of healing agents for self-repair as well as other active species for additionalfunctionality.

Original language	English (US)
Pages (from-to)	581-585
Number of pages	5
Journal	Nature Materials
Volume	6
Issue number	8
DOIs	https://doi.org/10.1038/nmat1934
State	Published - Aug 2007

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Online availability

10.1038/nmat1934

Library availability

Discover UIUC Full Text

Cite this

@article{66d1897bc4a240c8a63494e9df91480e,

title = "Self-healing materials with microvascular networks",

abstract = "Self-healing polymers composed of microencapsulated healing agents exhibit remarkable mechanical performance and regenerative ability, but are limited to autonomic repair of a single damage event in a given location. Self-healing is triggered by crack-induced rupture of the embedded capsules; thus, once a localized region is depleted of healing agent, further repair is precluded. Re-mendable polymers can achieve multiple healing cycles, but require external intervention in the form of heat treatment and applied pressure. Here, we report a self-healing system capable of autonomously repairing repeated damage events. Our bio-inspired coating-substrate design delivers healing agent to cracks in a polymer coating via a three-dimensional microvascular network embedded in the substrate. Crack damage in the epoxy coating is healed repeatedly. This approach opens new avenues for continuous delivery of healing agents for self-repair as well as other active species for additionalfunctionality.",

author = "Toohey, {Kathleen S.} and Sottos, {Nancy R.} and Lewis, {Jennifer A} and Moore, {Jeffrey S.} and White, {Scott R}",

note = "Funding Information: This work has been financially supported by the Air Force Office of Scientific Research Multidisciplinary University Research Initiative (grant number F49550-05-1-0346). K.S.T. is supported in part by the Beckman Institute for Advanced Science and Technology Graduate Fellows Program. We extend our gratitude to the Imaging Technology Group at the Beckman Institute, especially S. Robinson, for assistance with scanning electron microscopy. Correspondence and requests for materials should be addressed to N.R.S. Supplementary Information accompanies this paper on www.nature.com/naturematerials.",

year = "2007",

month = aug,

doi = "10.1038/nmat1934",

language = "English (US)",

volume = "6",

pages = "581--585",

journal = "Nature Materials",

issn = "1476-1122",

publisher = "Nature Publishing Group",

number = "8",

}

TY - JOUR

T1 - Self-healing materials with microvascular networks

AU - Toohey, Kathleen S.

AU - Sottos, Nancy R.

AU - Lewis, Jennifer A

AU - Moore, Jeffrey S.

AU - White, Scott R

N1 - Funding Information: This work has been financially supported by the Air Force Office of Scientific Research Multidisciplinary University Research Initiative (grant number F49550-05-1-0346). K.S.T. is supported in part by the Beckman Institute for Advanced Science and Technology Graduate Fellows Program. We extend our gratitude to the Imaging Technology Group at the Beckman Institute, especially S. Robinson, for assistance with scanning electron microscopy. Correspondence and requests for materials should be addressed to N.R.S. Supplementary Information accompanies this paper on www.nature.com/naturematerials.

PY - 2007/8

Y1 - 2007/8

N2 - Self-healing polymers composed of microencapsulated healing agents exhibit remarkable mechanical performance and regenerative ability, but are limited to autonomic repair of a single damage event in a given location. Self-healing is triggered by crack-induced rupture of the embedded capsules; thus, once a localized region is depleted of healing agent, further repair is precluded. Re-mendable polymers can achieve multiple healing cycles, but require external intervention in the form of heat treatment and applied pressure. Here, we report a self-healing system capable of autonomously repairing repeated damage events. Our bio-inspired coating-substrate design delivers healing agent to cracks in a polymer coating via a three-dimensional microvascular network embedded in the substrate. Crack damage in the epoxy coating is healed repeatedly. This approach opens new avenues for continuous delivery of healing agents for self-repair as well as other active species for additionalfunctionality.

AB - Self-healing polymers composed of microencapsulated healing agents exhibit remarkable mechanical performance and regenerative ability, but are limited to autonomic repair of a single damage event in a given location. Self-healing is triggered by crack-induced rupture of the embedded capsules; thus, once a localized region is depleted of healing agent, further repair is precluded. Re-mendable polymers can achieve multiple healing cycles, but require external intervention in the form of heat treatment and applied pressure. Here, we report a self-healing system capable of autonomously repairing repeated damage events. Our bio-inspired coating-substrate design delivers healing agent to cracks in a polymer coating via a three-dimensional microvascular network embedded in the substrate. Crack damage in the epoxy coating is healed repeatedly. This approach opens new avenues for continuous delivery of healing agents for self-repair as well as other active species for additionalfunctionality.

UR - http://www.scopus.com/inward/record.url?scp=34547584817&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547584817&partnerID=8YFLogxK

U2 - 10.1038/nmat1934

DO - 10.1038/nmat1934

M3 - Article

C2 - 17558429

AN - SCOPUS:34547584817

SN - 1476-1122

VL - 6

SP - 581

EP - 585

JO - Nature Materials

JF - Nature Materials

IS - 8

ER -

Self-healing materials with microvascular networks

Abstract

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this