Evaluation of peroxide initiators for radical polymerization-based self-healing applications

The suitability of various peroxide initiators for a radical polymerization-based self-healing system is evaluated. The initiators are compared using previously established crite- ria in the design of ring opening metathesis polymerization- based self-healing systems. Benzoyl peroxide (BPO) emerges as the best performing initiator across the range of evaluation criteria. Epoxy vinyl ester resin samples prepared with micro- capsules containing BPO exhibited upwards of 80% healing efficiency in preliminary tests in which a mixture of acrylic monomers and tertiary amine activator was injected into the crack plane of the sample after the initial fracture. V C 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 2698- 2708, 2010

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