Olefin metathesis for effective polymer healing via dynamic exchange of strong carbon-carbon bonds

摘要

A method of preparing a malleable and/or self-healing polymeric or composite material is provided. The method includes providing a polymeric or composite material comprising at least one alkene-containing polymer, combining the polymer with at least one homogeneous or heterogeneous transition metal olefin metathesis catalyst to form a polymeric or composite material, and performing an olefin metathesis reaction on the polymer so as to form reversible carbon-carbon double bonds in the polymer. Also provided is a method of healing a fractured surface of a polymeric material. The method includes bringing a fractured surface of a first polymeric material into contact with a second polymeric material, and performing an olefin metathesis reaction in the presence of a transition metal olefin metathesis catalyst such that the first polymeric material forms reversible carbon-carbon double bonds with the second polymeric material. Compositions comprising malleable and/or self-healing polymeric or composite material are also provided.

主权项

1. A method of preparing a malleable and/or self-healing polymeric or polymer composite material, comprising:
providing at least one alkene-containing polymer, combining the polymer with at least one homogenous or heterogeneous transition metal olefin metathesis catalyst to form a polymeric or polymer composite material, and performing an olefin metathesis reaction on the polymer that results in reversible carbon-carbon double bond exchange between polymer chains of the polymer without polymerization.