Brian Adzima and Christopher Bowman has discovered materials and methods that can allow in situ heating of thermo-reversible polymer networks via a self-limiting heating technique, using magnetic field-responsive particles. This method minimizes the irreversible reactions that occur at high temperatures. The material properties may be unchanged even after multiple cycles of fracture and repair, achieving its native properties after each and every fracture/repair cycle. The healing mechanisms of the invention can be faster than those obtained for thermoplastic materials, since the oligomeric liquids resulting from depolymerization can allow significantly enhanced diffusion.
Applications include use in coatings where scratches can be closed through the heating process; industrial adhesion; use as an embolic agent for vascular occlusion; and targeted drug delivery.
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17 hours ago