Preparation and characterization of poly (urea-formaldehyde) walled dicyclopentadiene microcapsules

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Source:

ICSHM 2013: Proceedings of the 4th International Conference on Self-Healing Materials, Ghent, Belgium, 16-20 June 2013

Faculty

Civil Engineering and Geosciences

Department

Structural Engineering

Abstract

Poly (urea-formaldehyde) (PUF) shelled dicyclopentadiene (DCPD) microcapsules were prepared by in-situ polymerization technology for self-healing concrete applications. It’s found, during the process, sodium dodecyl benzene sulfonate (SDBS) behaves better in emulsification of DCPD than other surfactant of sodium lauryl sulfate (SLS) and styrene maleic anhydride copolymer (SMA), and the addition of ammonia chloride (NH4Cl) as PUF curing catalyst accidentally leads to a smooth surface of the microcapsule.

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