Atom transfer radical copolymerization of styrene andN-cyclohexylmaleimide

Atom transfer radical copolymerization of methyl methacrylate withN-cyclohexylmaleimide

“…The overall effect leads to deceleration of the copolymerization rate in cyclohexanone. Thus, copolymerization of MMA and NCMI with the CuBr/bpy catalyst system in anisole was found to provide good control of the molecular weight and polydispersity, and the same copolymerization in cyclohexanone displayed poor control, which is the same situation found in the copolymerization of styrene/NCMI 19…”

“…The same phenomenon was published before and was used as an indication in favour of a free radical mechanism 18. 19 The fact that r NCMI <1 and r MMA >1 means that radicals preferentially add to MMA instead of NCMI, ie the activity of MMA is greater than that of NCMI in this copolymerization system. r NCMI × r MMA < 1 means that the copolymerization of MMA and NCMI has a weak tendency towards alternation.…”

Hyperbranched copolymers ofp-(chloromethyl)styrene andN-cyclohexylmaleimide synthesized by atom transfer radical polymerization

“…Figure 1 shows 1 H‐NMR spectrum of the copolymer of CMS with NCMI obtained therefrom with CuCl/bpy as catalyst system in cyclohexanone. In Figure 1, there are evident signals of NCMI repeat units, besides the signals from the aromatic protons and methylene and methine protons adjacent to the chlorine atoms, which indicates the formation of the copolymer of CMS and NCMI by ATRP 22. The signals, at 5.2 and 5.7 ppm, arising from the two methylene protons of the double bond at the chain end14 (or unreacted monomers CMS) are very weak, which indicates the formation of macromolecules and the absence (or very little) of unreacted monomer CMS.…”

Self‐condensing atom transfer radical polymerization of inimers of different reactivity ratios with styrene and the thermal properties of poly(2,6‐dimethyl‐1, 4‐phenylene oxide)/branched polystyrene blends

“…The alternating ATRP of electron‐rich monomers (e.g., vinylic aromatics, dienes) and electron‐deficient monomers (e.g., maleic anhydride, MIs) has been investigated 39–43. Yan, Liu, and coworkers44, 45 also reported on SCVP of donor–acceptor pairs, which resulted in hyperbranched copolymers.…”