Separation of Cyclohexylisocyanate from the Crosslinked Copolymers of N-Acryl-dicyclohexylurea with Ethylene Glycol Dimethacrylate or Divinyl Benzene

Abstract

Copolymerization of N-acryl-N,N′-dicyclohexylurea with ethylene glycol dimethacrylate or divinyl benzene in the presence of dibenzoyl peroxide as initiator gave corresponding crosslinked copolymers. Both copolymers thermally decompose by two-step mechanism. The first step separates cyclohexylisocyanate, thus forming the thermostable residue, which contains molecular imprints of cyclohexylisocyanates.

Keywords:

• N-Acryl-N,N′-dicyclohexylurea
• Poly[(N-acryl-N,N′-dicyclohexylurea)₂-co-ethylene glycol dimethacrylate]
• Poly[(N-acryl-N,N′-dicyclohexylurea)₂-co-divinyl benzene]
• Mechanism of copolymerization
• Thermal properties
• Molecularly imprinted crosslinked copolymers

Acknowledgments

The Ministry of Science and Technology of Croatia supported this work.