Cited by 96Polymer composites and self-healingEpoxy Resin Curing ProcessesAdvanced Materials and Mechanics

Healable thermoset polymer composite embedded with stimuli-responsive fibres

Open access
Li, Guoqiang, Meng, Harper, Hu, Jinlian·2012·Journal of The Royal Society Interface

Abstract

Severe wounds in biological systems such as human skin cannot heal themselves, unless they are first stitched together. Healing of macroscopic damage in thermoset polymer composites faces a similar challenge. Stimuli-responsive shape-changing polymeric fibres with outstanding mechanical properties embedded in polymers may be able to close macro-cracks automatically upon stimulation such as heating. Here, a stimuli-responsive fibre (SRF) with outstanding mechanical properties and supercontraction capability was fabricated for the purpose of healing macroscopic damage. The SRFs and thermoplastic particles (TPs) were incorporated into regular thermosetting epoxy for repeatedly healing macroscopic damages. The system works by mimicking self-healing of biological systems such as human skin, close (stitch) then heal, i.e. close the macroscopic crack through the thermal-induced supercontraction of the SRFs, and bond the closed crack through melting and diffusing of TPs at the crack interface. The healing efficiency determined using tapered double-cantilever beam specimens was 94 per cent. The self-healing process was reasonably repeatable.

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Crossref · 10.1098/rsif.2012.0409

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  • The self-healing process of the SMP fiber/thermoplastic particle/epoxy composites system was reasonably repeatable.

    “The self-healing process was reasonably repeatable [185,530].”
  • A biomimetic self-healing system using SMP fibers as grid skeleton and thermoplastic particles as healing agent was proposed to heal conventional thermoset polymers without SME.

    “Li et al. [185,530,531] proposed a new biomimetic self-healing system which includes using SMP fibers as grid skeleton and thermoplastic particles as the healing agent.”
  • In the SMP fiber/thermoplastic particle healing system, upon heating, constrained shape recovery of pre-stretched SMP fibers closes macrocracks in the polymer matrix and bonds the closed crack through melting and diffusing of thermoplastic particles at the crack interface.

    “Upon heating, constrained shape recovery (shrinkage) of the pre-stretched SMP fibers closes macrocracks in the polymer matrix which is similar to stitching a cut in the human skin by suture; and bond the closed crack through melting and diffusing of thermoplastic particles at the crack interface.”
  • The self-healing process of the SMP fiber/thermoplastic particle/epoxy composite system was reasonably repeatable.

    “The self-healing process was reasonably repeatable [185,530].”
  • In the second step of self-healing, at the bonding temperature, the thermoplastic particles melt and diffuse into the cracked matrix and bridge the crack plane.

    “In the second-step, at the bonding temperature (T 2 ), the thermoplastic particles melt and diffuse into the cracked matrix and bridge the crack plane.”

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Research works printed but not linked: 1

  1. 42.440 AC. 1999 ACI Committee 440 1996. State-of-the-art report on fiber reinforced plastic reinforcement for concrete structures, no. 153, pp. 627–628 American Concrete Institute, MI, USA [Google Scholar]

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Authors
Li, G., Meng, H., & Hu, J.
Affiliations
  • Louisiana State University (US)
  • Hong Kong Polytechnic University (HK)
Corresponding author
Li, Guoqiang
Venue
Journal of The Royal Society Interface
Published
2012-08-15
Volume
9
Issue
77
Pages
3279-3287
ISSN
  • 1742-5662 (ISSN-L)
  • 1742-5689
OpenAlex
W2134535717
Cited by
96
References
47
Citations by year
2025: 2 · 2024: 1 · 2023: 1 · 2022: 12 · 2021: 5 · 2020: 9 · 2019: 1 · 2018: 10 · 2017: 8 · 2016: 10 · 2015: 11 · 2014: 12 · 2013: 11 · 2012: 3
FWCI
9.30
Type
journal article
Language
en
Open access
Locations
  • Journal of The Royal Society Interface (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Civil War Book Review (submittedVersion)
  • PolyU Institutional Research Archive (Hong Kong Polytechnic University) (submittedVersion)
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer composites and self-healing
  • Physical Sciences › Engineering › Mechanical Engineering › Epoxy Resin Curing Processes
  • Physical Sciences › Engineering › Mechanical Engineering › Advanced Materials and Mechanics
Keywords
self-healing materials, thermoset composites, supercontraction, epoxy resin, crack closure, thermal healing, double cantilever beam, healing efficiency
MeSH terms
Materials Testing, Polymers, Polyurethanes, Temperature, Tensile Strength, Silk

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