Toward Microcapsule-Embedded Self-Healing Membranes

Sang Ryoung Kim, Bezawit A. Getachew, Seon Joo Park, Oh Seok Kwon, Won Hee Ryu, Andre Taylor, Joonwon Bae, Jae Hong Kim

Research output: Contribution to journalArticle

Abstract

We herein report the first instance of a self-healing water treatment membrane that restores its water flux and particle rejection properties autonomously. The self-healing membrane is fabricated by embedding microcapsules with a polyurethane shell and an isophorone diisocyanate core within a conventional poly(ether sulfone) membrane. A dual-surfactant system and polydopamine coating were used to control the size of these microcapsules and avoid capsule buckling. When the membrane structure is physically damaged, the microcapsules release a reactive isocyanate healing agent that reacts with the surrounding water to form a polyurea matrix that plugs the damage. The self-healing was found to recover the water flux and particle rejection of the membrane to 103 and 90% of the original membrane's performance, respectively. The results of this study show that microcapsule-embedded membranes are a promising approach to fabricating versatile, next-generation membranes that can self-heal.

Original languageEnglish (US)
Pages (from-to)216-221
Number of pages6
JournalEnvironmental Science and Technology Letters
Volume3
Issue number5
DOIs
StatePublished - May 10 2016

Fingerprint

Capsules
membrane
Membranes
Water
Fluxes
Isocyanates
Membrane structures
Sulfones
Polyurethanes
Water Purification
Water treatment
buckling
Surface-Active Agents
Ether
Buckling
Ethers
ether
water
Surface active agents
surfactant

ASJC Scopus subject areas

  • Ecology
  • Environmental Chemistry
  • Health, Toxicology and Mutagenesis
  • Pollution
  • Waste Management and Disposal
  • Water Science and Technology

Cite this

Kim, S. R., Getachew, B. A., Park, S. J., Kwon, O. S., Ryu, W. H., Taylor, A., ... Kim, J. H. (2016). Toward Microcapsule-Embedded Self-Healing Membranes. Environmental Science and Technology Letters, 3(5), 216-221. https://doi.org/10.1021/acs.estlett.6b00046

Toward Microcapsule-Embedded Self-Healing Membranes. / Kim, Sang Ryoung; Getachew, Bezawit A.; Park, Seon Joo; Kwon, Oh Seok; Ryu, Won Hee; Taylor, Andre; Bae, Joonwon; Kim, Jae Hong.

In: Environmental Science and Technology Letters, Vol. 3, No. 5, 10.05.2016, p. 216-221.

Research output: Contribution to journalArticle

Kim, SR, Getachew, BA, Park, SJ, Kwon, OS, Ryu, WH, Taylor, A, Bae, J & Kim, JH 2016, 'Toward Microcapsule-Embedded Self-Healing Membranes', Environmental Science and Technology Letters, vol. 3, no. 5, pp. 216-221. https://doi.org/10.1021/acs.estlett.6b00046
Kim SR, Getachew BA, Park SJ, Kwon OS, Ryu WH, Taylor A et al. Toward Microcapsule-Embedded Self-Healing Membranes. Environmental Science and Technology Letters. 2016 May 10;3(5):216-221. https://doi.org/10.1021/acs.estlett.6b00046
Kim, Sang Ryoung ; Getachew, Bezawit A. ; Park, Seon Joo ; Kwon, Oh Seok ; Ryu, Won Hee ; Taylor, Andre ; Bae, Joonwon ; Kim, Jae Hong. / Toward Microcapsule-Embedded Self-Healing Membranes. In: Environmental Science and Technology Letters. 2016 ; Vol. 3, No. 5. pp. 216-221.
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