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Microencapsulation of self-healing agents with melamine-urea-formaldehyde by the Shirasu porous glass (SPG) emulsification technique

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Abstract

Norbornene-based healing agent candidates, 5-ethylidene-2-norbornene (ENB) and ENB with a custom crosslinker, were prepared into uniform microspheres using a Shirasu porous glass (SPG) emulsification technique, and microencapsulated by in situ polymerization of melamine-urea-formaldehyde (MUF). The resulting microcapsules were observed by optical and scanning electron microscopy for their morphology, outer and inner surface and shell thickness. Particle size analysis revealed a more uniform size distribution with a mean diameter of 40 μm than a conventional method using a mechanical impeller. The thermal and mechanical properties of the microcapsules were also examined by considering fabrication of self-healing composites.

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Authors and Affiliations

  1. Department of Polymer Science and Engineering, Kumoh National Institute of Technology, Gyeongbuk, 731-701, Korea

    Xing Liu & Jong Keun Le

  2. College of Textile, Tianjin Polytechnic University, Chenglin Road, Tianjin, 300160, P.R. China

    Xing Liu

  3. Department of Materials Science and Engineering, Iowa State University, 2220 Hoover Hall, Ames, IA, 50011-2300, USA

    Michael R. Kessler

Authors
  1. Xing Liu
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  2. Jong Keun Le
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  3. Michael R. Kessler
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Correspondence to Jong Keun Le.

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Liu, X., Le, J.K. & Kessler, M.R. Microencapsulation of self-healing agents with melamine-urea-formaldehyde by the Shirasu porous glass (SPG) emulsification technique. Macromol. Res. 19, 1056–1061 (2011). https://doi.org/10.1007/s13233-011-1009-3

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  • DOI: https://doi.org/10.1007/s13233-011-1009-3

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