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

Xing Liu; Jong Keun Lee; Michael R. Kessler

doi:10.1117/12.843208

20 October 2009 Microencapsulation of self-healing agents with melamine-urea-formaldehyde by the Shirasu Porous Glass (SPG) emulsification technique

Xing Liu, Jong Keun Lee, Michael R. Kessler

Author Affiliations +

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 749345 (2009) https://doi.org/10.1117/12.843208
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

Abstract

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

Citation Download Citation

Xing Liu, Jong Keun Lee, and Michael R. Kessler "Microencapsulation of self-healing agents with melamine-urea-formaldehyde by the Shirasu Porous Glass (SPG) emulsification technique", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 749345 (20 October 2009); https://doi.org/10.1117/12.843208

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