Wetting and Coalescence of Drops of Self-Healing Agents on Electrospun Nanofiber Mats

Seongpil An, Yong Il Kim, Min Wook Lee, Alexander Yarin, Suk Goo Yoon

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Here we study experimentally the behavior of liquid healing agents released in vascular core-shell nanofiber mats used in self-healing engineered materials. It is shown that wettability-driven spreading of liquid drops is accompanied by the imbibition into the nanofiber matrix, and its laws deviate from those known for spreading on an intact surface. We also explore coalescence of the released drops on nanofiber mats, in particular, coalescence of drops of resin monomer and cure important for self-healing. The coalescence process is also affected by the imbibition into the pores of an underlying nanofiber mat. A theoretical model is developed to account for the imbibition effect on drop coalescence.

Original languageEnglish
Pages (from-to)10663-10672
Number of pages10
JournalLangmuir
Volume33
Issue number40
DOIs
Publication statusPublished - 2017 Oct 10

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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