Microencapsulation of gallium-indium (Ga-In) liquid metal for self-healing applications

B. J. Blaiszik, A. R. Jones, N. R. Sottos, S. R. White

Research output: Contribution to journalArticlepeer-review

Abstract

Microcapsules containing a liquid metal alloy core of gallium-indium (Ga-In) are prepared via in situ urea-formaldehyde (UF) microencapsulation. The capsule size, shape, thermal properties, and shell wall thickness are investigated. We prepare ellipsoidal capsules with major and minor diameter aspect ratios ranging from 1.64 to 1.08 and with major diameters ranging from 245 m to 3 m. We observe that as the capsule major diameter decreases, the aspect ratio approaches 1. The thermal properties of the prepared microcapsules are investigated by thermogravimetric (TGA) and differential scanning calorimetry (DSC). Microcapsules are shown to survive incorporation into an epoxy matrix and to trigger via mechanical damage to the cured matrix. Microcapsules containing liquid metal cores may have diverse applications ranging from self-healing to contrast enhancement or the demonstration of mechano-adaptive circuitry.

Original languageEnglish (US)
Pages (from-to)350-354
Number of pages5
JournalJournal of Microencapsulation
Volume31
Issue number4
DOIs
StatePublished - 2014

Keywords

  • Conductivity restoration
  • Microcapsules
  • Self-healing

ASJC Scopus subject areas

  • Pharmaceutical Science
  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry
  • Bioengineering
  • Organic Chemistry

Fingerprint Dive into the research topics of 'Microencapsulation of gallium-indium (Ga-In) liquid metal for self-healing applications'. Together they form a unique fingerprint.

Cite this