†Macromolecular Science and Engineering Program, ‡Department of Materials Science and Engineering, and §Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
∥ Advanced Materials and Processing Branch, NASA Langley Research Center, Hampton, Virginia 23681,United States
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Abstract
Autonomously healing materials that utilize thiol–ene polymerization initiated by an environmentally borne reaction stimulus are demonstrated by puncturing trilayered panels, fabricated by sandwiching thiol–ene–trialkylborane resin formulations between solid polymer panels, with high velocity projectiles; as the reactive liquid layer flows into the entrance hole, contact with atmospheric oxygen initiates polymerization, converting the liquid into a solid plug.