Preparation of nanoporous crosslinked poly(methacryl-N-cyclohexylamide-co-ethylene glycol dimethacrylate) by thermal degradation of poly(Methacryl-N,N'-dicyclohexylurea-co-ethylene glycol dimethacrylate)

摘要

Copolymers of methacryl-dicyclohexylurea (MA-DCU) with ethylene glycol dimethacrylate (EDMA) at mono mer-to-monomer ratios in the feed: 0.3/0.7, 0.5/0.5, 0.7/0.3, 0.8/0.2 were prepared in butanone in the presence of 2% of dibenzoyl peroxide at 70degreesC for 48 hr. Copolymers, regardless of the ratio of comonomers in the feed, decompose thermally at 200-250degreesC under the separation of cyclohexylisocyanate (C6H11 CO). Residues after the removal of C6H11NCO are thermally stable nanoporous crosslinked copolymers of methacryl-cyclohexylamide (MA-CHA) with EDMA, which decompose by a one-step mechanism between 300degreesC and 480degreesC.