Efficient microencapsulation of a liquid isocyanate with in situ shell functionalization
Title: Efficient microencapsulation of a liquid isocyanate with in situ shell functionalization Authors: Nguyen, Le-Thu T. Hillewaere, Xander K. D. Teixeira, Roberto F. A. Keywords: SELF-HEALING POLYMERS;;MICROCAPSULES;CHEMISTRY Issue Date: 2015 Publisher: ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND Citation: ISIKNOWLEDGE Abstract: We report on a one-pot, facile approach for the encapsulation of the liquid hexamethylene diisocyanate isocyanurate trimer in polyurea microcapsules formed via the oil-in-water interfacial reaction of an uretonimine- modified diphenyl methane diisocyanate trimer with triaminopyrimidine, with in situ shell functionalization/modification using different types of hydrophobic agents. Remarkably, the use of hexa-methylenedisilazane resulted in microcapsules of about 70 mu m in diameter, with a smooth outer surface and a high isocyanate core content up...