Efficient decomposition of a melamine-formaldehyde foam into melamine selective disconnection of bonds

The precise disconnection of one type of chemical bond in polymers realizes high-yield recovery of valuable chemicals. In this study, we demonstrate a sustainable and efficient strategy to selectively cleave the specific sp 3 C-sp 3 N bond of a thermoset melamine-formaldehyde foam, by which valuable melamine of 99.5% purity was obtained with a yield of 95.3%. Decomposition of MFF into melamine of 99.5% purity via selective disconnection of an sp 3 C-sp 3 N bond with a yield of 95.3%.