A novel copolymer of methyl methacrylate with N-pentafluorophenyl maleimide: High glass transition temperature and highly transparent polymer

Add time:09/10/2019    Source:sciencedirect.com

N-pentafluorophenyl maleimide (PFPMI) was synthesized. The homo and copolymers of PFPMI with methyl methacrylate (MMA) were prepared. The monomer reactivity ratio, r1 (PFPMI) and r2 (MMA) were 0.389 and 1.06 respectively. Q and e values for PFPMI were calculated as 1.00 and 1.30. The refractive indexes of poly(PFPMI) and PMMA were found to be similar; 1.4989 and 1.4953 at 532 nm, respectively. The copolymers exhibited no light scattering, and the film was very transparent. The glass transition temperatures of the PFPMI-co-MMA were in the range of 140 °C–180 °C with the PFPMI content from 18.8 to 65 mol% and the copolymers obtained have high thermal stability (∼370 °C). The water absorption of PFPMI-co-MMA was greatly reduced as compared with that of pure PMMA.

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