Polymerization and adhesion studies of ethyl cyanoacrylate with other electron deficient olefin monomers

摘要

The oxidation of a phenylselenide precursor is a simple procedure for the preparation of difunctional alkyl cyanoacrylate esters, such as BDDCA, 2, as well as other monofunctional 1,1 disubstituted electron deficient olefins. Crosslinking ECA with BDDCA improves solvent resistance, but does not improve polymer thermal stability. The monofunctional monomers do homopolymerize and copolymerize with ECA by nucleophilic initiation, but the homopolymers possess a lower degree of polymerization than the ECA homopolymer. The DEMM homopolymer and its 50:50 copolymer with ECA do possess improved thermal stability over the ECA homopolymer. The addition of comonomers to ECA reduces the lapshear adhesive strength after thermal exposure.