Release of Self-Healing Agents in a Material

What Happens Next?

Min Wook Lee, Suk Goo Yoon, Alexander Yarin

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A microfluidic chip-like setup consisting of a vascular system of microchannels alternatingly filled with either a resin monomer or a curing agent is used to study the intrinsic physical healing mechanism in self-healing materials. It is observed that, as a prenotched crack propagates across the chip, the resin and curing agent are released from the damaged channels. Subsequently, both the resin and the curing agent wet the surrounding polydimethylsiloxane (PDMS) matrix and spread over the crack banks until the two blobs come in contact, mix, and polymerize through an organometallic cross-linking reaction. Moreover, the polymerized domains form a system of pillars, which span the crack banks on the opposite side. This "stitching" phenomenon prevents further propagation of the crack.

Original languageEnglish
Pages (from-to)17449-17455
Number of pages7
JournalACS Applied Materials and Interfaces
Volume9
Issue number20
DOIs
Publication statusPublished - 2017 May 24

Fingerprint

Cracks
Curing
Resins
Self-healing materials
Organometallics
Polydimethylsiloxane
Microchannels
Microfluidics
Monomers
baysilon

Keywords

  • crack propagation
  • cure
  • microchannel
  • resin
  • self-healing

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Release of Self-Healing Agents in a Material : What Happens Next? / Lee, Min Wook; Yoon, Suk Goo; Yarin, Alexander.

In: ACS Applied Materials and Interfaces, Vol. 9, No. 20, 24.05.2017, p. 17449-17455.

Research output: Contribution to journalArticle

Lee, Min Wook ; Yoon, Suk Goo ; Yarin, Alexander. / Release of Self-Healing Agents in a Material : What Happens Next?. In: ACS Applied Materials and Interfaces. 2017 ; Vol. 9, No. 20. pp. 17449-17455.
@article{42281f8be0664d9186e319a8bb50df4b,
title = "Release of Self-Healing Agents in a Material: What Happens Next?",
abstract = "A microfluidic chip-like setup consisting of a vascular system of microchannels alternatingly filled with either a resin monomer or a curing agent is used to study the intrinsic physical healing mechanism in self-healing materials. It is observed that, as a prenotched crack propagates across the chip, the resin and curing agent are released from the damaged channels. Subsequently, both the resin and the curing agent wet the surrounding polydimethylsiloxane (PDMS) matrix and spread over the crack banks until the two blobs come in contact, mix, and polymerize through an organometallic cross-linking reaction. Moreover, the polymerized domains form a system of pillars, which span the crack banks on the opposite side. This {"}stitching{"} phenomenon prevents further propagation of the crack.",
keywords = "crack propagation, cure, microchannel, resin, self-healing",
author = "Lee, {Min Wook} and Yoon, {Suk Goo} and Alexander Yarin",
year = "2017",
month = "5",
day = "24",
doi = "10.1021/acsami.7b03491",
language = "English",
volume = "9",
pages = "17449--17455",
journal = "ACS applied materials & interfaces",
issn = "1944-8244",
publisher = "American Chemical Society",
number = "20",

}

TY - JOUR

T1 - Release of Self-Healing Agents in a Material

T2 - What Happens Next?

AU - Lee, Min Wook

AU - Yoon, Suk Goo

AU - Yarin, Alexander

PY - 2017/5/24

Y1 - 2017/5/24

N2 - A microfluidic chip-like setup consisting of a vascular system of microchannels alternatingly filled with either a resin monomer or a curing agent is used to study the intrinsic physical healing mechanism in self-healing materials. It is observed that, as a prenotched crack propagates across the chip, the resin and curing agent are released from the damaged channels. Subsequently, both the resin and the curing agent wet the surrounding polydimethylsiloxane (PDMS) matrix and spread over the crack banks until the two blobs come in contact, mix, and polymerize through an organometallic cross-linking reaction. Moreover, the polymerized domains form a system of pillars, which span the crack banks on the opposite side. This "stitching" phenomenon prevents further propagation of the crack.

AB - A microfluidic chip-like setup consisting of a vascular system of microchannels alternatingly filled with either a resin monomer or a curing agent is used to study the intrinsic physical healing mechanism in self-healing materials. It is observed that, as a prenotched crack propagates across the chip, the resin and curing agent are released from the damaged channels. Subsequently, both the resin and the curing agent wet the surrounding polydimethylsiloxane (PDMS) matrix and spread over the crack banks until the two blobs come in contact, mix, and polymerize through an organometallic cross-linking reaction. Moreover, the polymerized domains form a system of pillars, which span the crack banks on the opposite side. This "stitching" phenomenon prevents further propagation of the crack.

KW - crack propagation

KW - cure

KW - microchannel

KW - resin

KW - self-healing

UR - http://www.scopus.com/inward/record.url?scp=85019905071&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85019905071&partnerID=8YFLogxK

U2 - 10.1021/acsami.7b03491

DO - 10.1021/acsami.7b03491

M3 - Article

VL - 9

SP - 17449

EP - 17455

JO - ACS applied materials & interfaces

JF - ACS applied materials & interfaces

SN - 1944-8244

IS - 20

ER -