Copolymerization of N‐vinyl‐ε‐caprolactam with maleic anhydride

Abstract

The copolymerization of N-vinyl-E-caprolactam (VCL) with maleic anhydride (MA) in homogeneous solution of N,N-dimethylformamide at 70°C, initiated by benzoyl peroxide, is studied. VCL and MA form a 1:l charge-transfer complex which is confirmed by spectroscopic analysis. The complex is decisive in the copolymerization reaction and has an equilibrium constant of 0,2 I/mol. The reactivity ratios of the VCL-MA pair are determined as follows: rvcL = 0,006 rAM = 0,17

Poly(N-vinylcaprolactam-co-glycidyl methacrylate) Aqueous Microgels Labeled with Fluorescent LaF3:Eu Nanoparticles

“…Poly( N -vinylcaprolactam) has attracted large scientific interest due to its thermo-sensitivity in aqueous solutions that offers numerous potential applications in medicine, separation, and biotechnology. PVCL has been intensively studied as a homopolymer and as a variety of copolymers with vinyl acetate, tetrahydrofuran and ethylene oxide, vinylamine and allylamine, maleic anhydride, and vinylimidazole . PVCL has been used in cross-linked systems (hydrogels) as a homopolymer, , as a copolymer with ethylene oxide .…”